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[Qemu-ppc] [PATCH v8 14/35] qapi: Swap visit_* arguments for consistent


From: Eric Blake
Subject: [Qemu-ppc] [PATCH v8 14/35] qapi: Swap visit_* arguments for consistent 'name' placement
Date: Mon, 21 Dec 2015 10:08:19 -0700

JSON uses "name":value, but many of our visitor interfaces were
called with visit_type_FOO(v, &value, name, errp).  This can be
a bit confusing to have to mentally swap the parameter order to
match JSON order.  It's particularly bad for visit_start_struct(),
where the 'name' parameter is smack in the middle of the
otherwise-related group of 'obj, kind, size' parameters! It's
time to do a global swap of the parameter ordering, so that the
'name' parameter is always immediately after the Visitor argument.

Additional reasons in favor of the swap: name is always an input
parameter, while &value is sometimes an output parameter (depending
on whether the caller is using an input visitor); and it is nicer
to list input parameters first.  Also, the existing include/qjson.h
prefers listing 'name' first in json_prop_*(), and I have plans to
unify that file with the qapi visitors; listing 'name' first in
qapi will minimize churn to the (admittedly few) qjson.h clients.

The next patches will then fix object.h, visitor-impl.h, and those
clients to match.

Done by first patching scripts/qapi*.py by hand to make generated
files do what I want, then by running the following Coccinelle
script to affect the rest of the code base:
 $ spatch --sp-file script `git grep -l '\bvisit_' -- '**/*.[ch]'`
I then had to apply some touchups (Coccinelle insisted on TAB
indentation in visitor.h, and botched the signature of
visit_type_enum() by rewriting 'const char *const strings[]' to
the syntactically invalid 'const char*const[] strings').

    // Part 1: Swap declaration order
    @@
    type TV, TErr, TObj, T1, T2;
    identifier OBJ, ARG1, ARG2;
    @@
     void visit_start_struct
    -(TV v, TObj OBJ, T1 ARG1, const char *name, T2 ARG2, TErr errp)
    +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp)
     { ... }

    @@
    type bool, TV, T1;
    identifier ARG1;
    @@
     bool visit_optional
    -(TV v, T1 ARG1, const char *name)
    +(TV v, const char *name, T1 ARG1)
     { ... }

    @@
    type TV, TErr, TObj, T1;
    identifier OBJ, ARG1;
    @@
     void visit_get_next_type
    -(TV v, TObj OBJ, T1 ARG1, const char *name, TErr errp)
    +(TV v, const char *name, TObj OBJ, T1 ARG1, TErr errp)
     { ... }

    @@
    type TV, TErr, TObj, T1, T2;
    identifier OBJ, ARG1, ARG2;
    @@
     void visit_type_enum
    -(TV v, TObj OBJ, T1 ARG1, T2 ARG2, const char *name, TErr errp)
    +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp)
     { ... }

    @@
    type TV, TErr, TObj;
    identifier OBJ;
    identifier VISIT_TYPE =~ "^visit_type_";
    @@
     void VISIT_TYPE
    -(TV v, TObj OBJ, const char *name, TErr errp)
    +(TV v, const char *name, TObj OBJ, TErr errp)
     { ... }

    // Part 2: swap caller order
    @@
    expression V, NAME, OBJ, ARG1, ARG2, ERR;
    identifier VISIT_TYPE =~ "^visit_type_";
    @@
    (
    -visit_start_struct(V, OBJ, ARG1, NAME, ARG2, ERR)
    +visit_start_struct(V, NAME, OBJ, ARG1, ARG2, ERR)
    |
    -visit_optional(V, ARG1, NAME)
    +visit_optional(V, NAME, ARG1)
    |
    -visit_get_next_type(V, OBJ, ARG1, NAME, ERR)
    +visit_get_next_type(V, NAME, OBJ, ARG1, ERR)
    |
    -visit_type_enum(V, OBJ, ARG1, ARG2, NAME, ERR)
    +visit_type_enum(V, NAME, OBJ, ARG1, ARG2, ERR)
    |
    -VISIT_TYPE(V, OBJ, NAME, ERR)
    +VISIT_TYPE(V, NAME, OBJ, ERR)
    )

Signed-off-by: Eric Blake <address@hidden>

---
v8: new patch
---
 backends/hostmem.c                 |  8 ++--
 block/qapi.c                       |  2 +-
 blockdev.c                         |  4 +-
 bootdevice.c                       |  4 +-
 hmp.c                              |  8 ++--
 hw/acpi/core.c                     |  4 +-
 hw/acpi/ich9.c                     | 14 +++----
 hw/block/nvme.c                    |  4 +-
 hw/core/machine.c                  | 10 ++---
 hw/core/qdev-properties-system.c   | 12 +++---
 hw/core/qdev-properties.c          | 66 +++++++++++++++----------------
 hw/core/qdev.c                     |  2 +-
 hw/i386/pc.c                       | 14 +++----
 hw/ide/qdev.c                      |  4 +-
 hw/intc/xics.c                     |  8 ++--
 hw/isa/lpc_ich9.c                  |  2 +-
 hw/mem/pc-dimm.c                   |  2 +-
 hw/misc/edu.c                      |  2 +-
 hw/misc/tmp105.c                   |  4 +-
 hw/net/ne2000-isa.c                |  4 +-
 hw/pci-host/piix.c                 |  8 ++--
 hw/pci-host/q35.c                  | 10 ++---
 hw/ppc/spapr_drc.c                 | 12 +++---
 hw/usb/dev-storage.c               |  4 +-
 hw/virtio/virtio-balloon.c         | 12 +++---
 include/qapi/visitor.h             | 52 +++++++++++++++----------
 memory.c                           |  8 ++--
 net/dump.c                         |  4 +-
 net/filter-buffer.c                |  4 +-
 net/net.c                          |  4 +-
 numa.c                             |  6 +--
 qapi/qapi-visit-core.c             | 54 +++++++++++++------------
 qemu-img.c                         | 11 +++---
 qom/object.c                       | 49 ++++++++++++-----------
 replay/replay-input.c              |  4 +-
 scripts/qapi-commands.py           |  4 +-
 scripts/qapi-event.py              |  2 +-
 scripts/qapi-types.py              |  2 +-
 scripts/qapi-visit.py              | 28 ++++++-------
 scripts/qapi.py                    |  4 +-
 target-i386/cpu.c                  | 30 +++++++-------
 target-ppc/translate_init.c        |  4 +-
 tests/test-opts-visitor.c          |  6 +--
 tests/test-qdev-global-props.c     |  4 +-
 tests/test-qmp-commands.c          |  2 +-
 tests/test-qmp-input-strict.c      | 28 ++++++-------
 tests/test-qmp-input-visitor.c     | 80 +++++++++++++++++++-------------------
 tests/test-qmp-output-visitor.c    | 34 ++++++++--------
 tests/test-string-input-visitor.c  | 34 ++++++++--------
 tests/test-string-output-visitor.c | 16 ++++----
 tests/test-visitor-serialization.c | 54 ++++++++++++-------------
 util/qemu-sockets.c                |  4 +-
 vl.c                               |  4 +-
 53 files changed, 387 insertions(+), 373 deletions(-)

diff --git a/backends/hostmem.c b/backends/hostmem.c
index 1b4eb45..a9d30d8 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -32,7 +32,7 @@ host_memory_backend_get_size(Object *obj, Visitor *v, void 
*opaque,
     HostMemoryBackend *backend = MEMORY_BACKEND(obj);
     uint64_t value = backend->size;

-    visit_type_size(v, &value, name, errp);
+    visit_type_size(v, name, &value, errp);
 }

 static void
@@ -48,7 +48,7 @@ host_memory_backend_set_size(Object *obj, Visitor *v, void 
*opaque,
         goto out;
     }

-    visit_type_size(v, &value, name, &local_err);
+    visit_type_size(v, name, &value, &local_err);
     if (local_err) {
         goto out;
     }
@@ -91,7 +91,7 @@ host_memory_backend_get_host_nodes(Object *obj, Visitor *v, 
void *opaque,
         node = &(*node)->next;
     } while (true);

-    visit_type_uint16List(v, &host_nodes, name, errp);
+    visit_type_uint16List(v, name, &host_nodes, errp);
 }

 static void
@@ -102,7 +102,7 @@ host_memory_backend_set_host_nodes(Object *obj, Visitor *v, 
void *opaque,
     HostMemoryBackend *backend = MEMORY_BACKEND(obj);
     uint16List *l = NULL;

-    visit_type_uint16List(v, &l, name, errp);
+    visit_type_uint16List(v, name, &l, errp);

     while (l) {
         bitmap_set(backend->host_nodes, l->value, 1);
diff --git a/block/qapi.c b/block/qapi.c
index fecac25..c87994d 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -634,7 +634,7 @@ void bdrv_image_info_specific_dump(fprintf_function 
func_fprintf, void *f,
     QmpOutputVisitor *ov = qmp_output_visitor_new();
     QObject *obj, *data;

-    visit_type_ImageInfoSpecific(qmp_output_get_visitor(ov), &info_spec, NULL,
+    visit_type_ImageInfoSpecific(qmp_output_get_visitor(ov), NULL, &info_spec,
                                  &error_abort);
     obj = qmp_output_get_qobject(ov);
     assert(qobject_type(obj) == QTYPE_QDICT);
diff --git a/blockdev.c b/blockdev.c
index 64dbfeb..b6c710a 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -3723,8 +3723,8 @@ void qmp_blockdev_add(BlockdevOptions *options, Error 
**errp)
         }
     }

-    visit_type_BlockdevOptions(qmp_output_get_visitor(ov),
-                               &options, NULL, &local_err);
+    visit_type_BlockdevOptions(qmp_output_get_visitor(ov), NULL, &options,
+                               &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         goto fail;
diff --git a/bootdevice.c b/bootdevice.c
index 3cdc0d7..d307cfc 100644
--- a/bootdevice.c
+++ b/bootdevice.c
@@ -274,7 +274,7 @@ static void device_get_bootindex(Object *obj, Visitor *v, 
void *opaque,
                                  const char *name, Error **errp)
 {
     BootIndexProperty *prop = opaque;
-    visit_type_int32(v, prop->bootindex, name, errp);
+    visit_type_int32(v, name, prop->bootindex, errp);
 }

 static void device_set_bootindex(Object *obj, Visitor *v, void *opaque,
@@ -284,7 +284,7 @@ static void device_set_bootindex(Object *obj, Visitor *v, 
void *opaque,
     int32_t boot_index;
     Error *local_err = NULL;

-    visit_type_int32(v, &boot_index, name, &local_err);
+    visit_type_int32(v, name, &boot_index, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/hmp.c b/hmp.c
index 0d21f1d..7b32f6f 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1686,13 +1686,13 @@ void hmp_object_add(Monitor *mon, const QDict *qdict)
     }

     qdict_del(pdict, "qom-type");
-    visit_type_str(v, &type, "qom-type", &err);
+    visit_type_str(v, "qom-type", &type, &err);
     if (err) {
         goto out_end;
     }

     qdict_del(pdict, "id");
-    visit_type_str(v, &id, "id", &err);
+    visit_type_str(v, "id", &id, &err);
     if (err) {
         goto out_end;
     }
@@ -1960,8 +1960,8 @@ void hmp_info_memdev(Monitor *mon, const QDict *qdict)

     while (m) {
         ov = string_output_visitor_new(false);
-        visit_type_uint16List(string_output_get_visitor(ov),
-                              &m->value->host_nodes, NULL, NULL);
+        visit_type_uint16List(string_output_get_visitor(ov), NULL,
+                              &m->value->host_nodes, NULL);
         monitor_printf(mon, "memory backend: %d\n", i);
         monitor_printf(mon, "  size:  %" PRId64 "\n", m->value->size);
         monitor_printf(mon, "  merge: %s\n",
diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 21e113d..ef1f037 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -242,7 +242,7 @@ void acpi_table_add(const QemuOpts *opts, Error **errp)
         OptsVisitor *ov;

         ov = opts_visitor_new(opts);
-        visit_type_AcpiTableOptions(opts_get_visitor(ov), &hdrs, NULL, &err);
+        visit_type_AcpiTableOptions(opts_get_visitor(ov), NULL, &hdrs, &err);
         opts_visitor_cleanup(ov);
     }

@@ -301,7 +301,7 @@ out:
         QapiDeallocVisitor *dv;

         dv = qapi_dealloc_visitor_new();
-        visit_type_AcpiTableOptions(qapi_dealloc_get_visitor(dv), &hdrs, NULL,
+        visit_type_AcpiTableOptions(qapi_dealloc_get_visitor(dv), NULL, &hdrs,
                                     NULL);
         qapi_dealloc_visitor_cleanup(dv);
     }
diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
index 1c7fcfa..0a486fb 100644
--- a/hw/acpi/ich9.c
+++ b/hw/acpi/ich9.c
@@ -289,7 +289,7 @@ static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v,
     ICH9LPCPMRegs *pm = opaque;
     uint32_t value = pm->pm_io_base + ICH9_PMIO_GPE0_STS;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static bool ich9_pm_get_memory_hotplug_support(Object *obj, Error **errp)
@@ -314,7 +314,7 @@ static void ich9_pm_get_disable_s3(Object *obj, Visitor *v,
     ICH9LPCPMRegs *pm = opaque;
     uint8_t value = pm->disable_s3;

-    visit_type_uint8(v, &value, name, errp);
+    visit_type_uint8(v, name, &value, errp);
 }

 static void ich9_pm_set_disable_s3(Object *obj, Visitor *v,
@@ -325,7 +325,7 @@ static void ich9_pm_set_disable_s3(Object *obj, Visitor *v,
     Error *local_err = NULL;
     uint8_t value;

-    visit_type_uint8(v, &value, name, &local_err);
+    visit_type_uint8(v, name, &value, &local_err);
     if (local_err) {
         goto out;
     }
@@ -341,7 +341,7 @@ static void ich9_pm_get_disable_s4(Object *obj, Visitor *v,
     ICH9LPCPMRegs *pm = opaque;
     uint8_t value = pm->disable_s4;

-    visit_type_uint8(v, &value, name, errp);
+    visit_type_uint8(v, name, &value, errp);
 }

 static void ich9_pm_set_disable_s4(Object *obj, Visitor *v,
@@ -352,7 +352,7 @@ static void ich9_pm_set_disable_s4(Object *obj, Visitor *v,
     Error *local_err = NULL;
     uint8_t value;

-    visit_type_uint8(v, &value, name, &local_err);
+    visit_type_uint8(v, name, &value, &local_err);
     if (local_err) {
         goto out;
     }
@@ -368,7 +368,7 @@ static void ich9_pm_get_s4_val(Object *obj, Visitor *v,
     ICH9LPCPMRegs *pm = opaque;
     uint8_t value = pm->s4_val;

-    visit_type_uint8(v, &value, name, errp);
+    visit_type_uint8(v, name, &value, errp);
 }

 static void ich9_pm_set_s4_val(Object *obj, Visitor *v,
@@ -379,7 +379,7 @@ static void ich9_pm_set_s4_val(Object *obj, Visitor *v,
     Error *local_err = NULL;
     uint8_t value;

-    visit_type_uint8(v, &value, name, &local_err);
+    visit_type_uint8(v, name, &value, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 169e4fa..3676e2e 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -920,7 +920,7 @@ static void nvme_get_bootindex(Object *obj, Visitor *v, 
void *opaque,
 {
     NvmeCtrl *s = NVME(obj);

-    visit_type_int32(v, &s->conf.bootindex, name, errp);
+    visit_type_int32(v, name, &s->conf.bootindex, errp);
 }

 static void nvme_set_bootindex(Object *obj, Visitor *v, void *opaque,
@@ -930,7 +930,7 @@ static void nvme_set_bootindex(Object *obj, Visitor *v, 
void *opaque,
     int32_t boot_index;
     Error *local_err = NULL;

-    visit_type_int32(v, &boot_index, name, &local_err);
+    visit_type_int32(v, name, &boot_index, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 82be54e..bbbfff2 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -40,7 +40,7 @@ static void machine_set_kernel_irqchip(Object *obj, Visitor 
*v,
     MachineState *ms = MACHINE(obj);
     OnOffSplit mode;

-    visit_type_OnOffSplit(v, &mode, name, &err);
+    visit_type_OnOffSplit(v, name, &mode, &err);
     if (err) {
         error_propagate(errp, err);
         return;
@@ -74,7 +74,7 @@ static void machine_get_kvm_shadow_mem(Object *obj, Visitor 
*v,
     MachineState *ms = MACHINE(obj);
     int64_t value = ms->kvm_shadow_mem;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void machine_set_kvm_shadow_mem(Object *obj, Visitor *v,
@@ -85,7 +85,7 @@ static void machine_set_kvm_shadow_mem(Object *obj, Visitor 
*v,
     Error *error = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &error);
+    visit_type_int(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
@@ -176,7 +176,7 @@ static void machine_get_phandle_start(Object *obj, Visitor 
*v,
     MachineState *ms = MACHINE(obj);
     int64_t value = ms->phandle_start;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void machine_set_phandle_start(Object *obj, Visitor *v,
@@ -187,7 +187,7 @@ static void machine_set_phandle_start(Object *obj, Visitor 
*v,
     Error *error = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &error);
+    visit_type_int(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index 921e799..5c6bc6b 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -30,7 +30,7 @@ static void get_pointer(Object *obj, Visitor *v, Property 
*prop,
     char *p;

     p = *ptr ? print(*ptr) : g_strdup("");
-    visit_type_str(v, &p, name, errp);
+    visit_type_str(v, name, &p, errp);
     g_free(p);
 }

@@ -50,7 +50,7 @@ static void set_pointer(Object *obj, Visitor *v, Property 
*prop,
         return;
     }

-    visit_type_str(v, &str, name, &local_err);
+    visit_type_str(v, name, &str, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -201,7 +201,7 @@ static void get_netdev(Object *obj, Visitor *v, void 
*opaque,
     NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop);
     char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : "");

-    visit_type_str(v, &p, name, errp);
+    visit_type_str(v, name, &p, errp);
     g_free(p);
 }

@@ -222,7 +222,7 @@ static void set_netdev(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_str(v, &str, name, &local_err);
+    visit_type_str(v, name, &str, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -307,7 +307,7 @@ static void get_vlan(Object *obj, Visitor *v, void *opaque,
         }
     }

-    visit_type_int32(v, &id, name, errp);
+    visit_type_int32(v, name, &id, errp);
 }

 static void set_vlan(Object *obj, Visitor *v, void *opaque,
@@ -326,7 +326,7 @@ static void set_vlan(Object *obj, Visitor *v, void *opaque,
         return;
     }

-    visit_type_int32(v, &id, name, &local_err);
+    visit_type_int32(v, name, &id, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 33e245e..49c6ad7 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -48,8 +48,8 @@ static void get_enum(Object *obj, Visitor *v, void *opaque,
     Property *prop = opaque;
     int *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_enum(v, ptr, prop->info->enum_table,
-                    prop->info->name, prop->name, errp);
+    visit_type_enum(v, prop->name, ptr, prop->info->enum_table,
+                    prop->info->name, errp);
 }

 static void set_enum(Object *obj, Visitor *v, void *opaque,
@@ -64,8 +64,8 @@ static void set_enum(Object *obj, Visitor *v, void *opaque,
         return;
     }

-    visit_type_enum(v, ptr, prop->info->enum_table,
-                    prop->info->name, prop->name, errp);
+    visit_type_enum(v, prop->name, ptr, prop->info->enum_table,
+                    prop->info->name, errp);
 }

 /* Bit */
@@ -95,7 +95,7 @@ static void prop_get_bit(Object *obj, Visitor *v, void 
*opaque,
     uint32_t *p = qdev_get_prop_ptr(dev, prop);
     bool value = (*p & qdev_get_prop_mask(prop)) != 0;

-    visit_type_bool(v, &value, name, errp);
+    visit_type_bool(v, name, &value, errp);
 }

 static void prop_set_bit(Object *obj, Visitor *v, void *opaque,
@@ -111,7 +111,7 @@ static void prop_set_bit(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_bool(v, &value, name, &local_err);
+    visit_type_bool(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -153,7 +153,7 @@ static void prop_get_bit64(Object *obj, Visitor *v, void 
*opaque,
     uint64_t *p = qdev_get_prop_ptr(dev, prop);
     bool value = (*p & qdev_get_prop_mask64(prop)) != 0;

-    visit_type_bool(v, &value, name, errp);
+    visit_type_bool(v, name, &value, errp);
 }

 static void prop_set_bit64(Object *obj, Visitor *v, void *opaque,
@@ -169,7 +169,7 @@ static void prop_set_bit64(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_bool(v, &value, name, &local_err);
+    visit_type_bool(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -193,7 +193,7 @@ static void get_bool(Object *obj, Visitor *v, void *opaque,
     Property *prop = opaque;
     bool *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_bool(v, ptr, name, errp);
+    visit_type_bool(v, name, ptr, errp);
 }

 static void set_bool(Object *obj, Visitor *v, void *opaque,
@@ -208,7 +208,7 @@ static void set_bool(Object *obj, Visitor *v, void *opaque,
         return;
     }

-    visit_type_bool(v, ptr, name, errp);
+    visit_type_bool(v, name, ptr, errp);
 }

 PropertyInfo qdev_prop_bool = {
@@ -226,7 +226,7 @@ static void get_uint8(Object *obj, Visitor *v, void *opaque,
     Property *prop = opaque;
     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_uint8(v, ptr, name, errp);
+    visit_type_uint8(v, name, ptr, errp);
 }

 static void set_uint8(Object *obj, Visitor *v, void *opaque,
@@ -241,7 +241,7 @@ static void set_uint8(Object *obj, Visitor *v, void *opaque,
         return;
     }

-    visit_type_uint8(v, ptr, name, errp);
+    visit_type_uint8(v, name, ptr, errp);
 }

 PropertyInfo qdev_prop_uint8 = {
@@ -259,7 +259,7 @@ static void get_uint16(Object *obj, Visitor *v, void 
*opaque,
     Property *prop = opaque;
     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_uint16(v, ptr, name, errp);
+    visit_type_uint16(v, name, ptr, errp);
 }

 static void set_uint16(Object *obj, Visitor *v, void *opaque,
@@ -274,7 +274,7 @@ static void set_uint16(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_uint16(v, ptr, name, errp);
+    visit_type_uint16(v, name, ptr, errp);
 }

 PropertyInfo qdev_prop_uint16 = {
@@ -292,7 +292,7 @@ static void get_uint32(Object *obj, Visitor *v, void 
*opaque,
     Property *prop = opaque;
     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_uint32(v, ptr, name, errp);
+    visit_type_uint32(v, name, ptr, errp);
 }

 static void set_uint32(Object *obj, Visitor *v, void *opaque,
@@ -307,7 +307,7 @@ static void set_uint32(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_uint32(v, ptr, name, errp);
+    visit_type_uint32(v, name, ptr, errp);
 }

 static void get_int32(Object *obj, Visitor *v, void *opaque,
@@ -317,7 +317,7 @@ static void get_int32(Object *obj, Visitor *v, void *opaque,
     Property *prop = opaque;
     int32_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_int32(v, ptr, name, errp);
+    visit_type_int32(v, name, ptr, errp);
 }

 static void set_int32(Object *obj, Visitor *v, void *opaque,
@@ -332,7 +332,7 @@ static void set_int32(Object *obj, Visitor *v, void *opaque,
         return;
     }

-    visit_type_int32(v, ptr, name, errp);
+    visit_type_int32(v, name, ptr, errp);
 }

 PropertyInfo qdev_prop_uint32 = {
@@ -356,7 +356,7 @@ static void get_uint64(Object *obj, Visitor *v, void 
*opaque,
     Property *prop = opaque;
     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_uint64(v, ptr, name, errp);
+    visit_type_uint64(v, name, ptr, errp);
 }

 static void set_uint64(Object *obj, Visitor *v, void *opaque,
@@ -371,7 +371,7 @@ static void set_uint64(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_uint64(v, ptr, name, errp);
+    visit_type_uint64(v, name, ptr, errp);
 }

 PropertyInfo qdev_prop_uint64 = {
@@ -397,9 +397,9 @@ static void get_string(Object *obj, Visitor *v, void 
*opaque,

     if (!*ptr) {
         char *str = (char *)"";
-        visit_type_str(v, &str, name, errp);
+        visit_type_str(v, name, &str, errp);
     } else {
-        visit_type_str(v, ptr, name, errp);
+        visit_type_str(v, name, ptr, errp);
     }
 }

@@ -417,7 +417,7 @@ static void set_string(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_str(v, &str, name, &local_err);
+    visit_type_str(v, name, &str, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -460,7 +460,7 @@ static void get_mac(Object *obj, Visitor *v, void *opaque,
              mac->a[0], mac->a[1], mac->a[2],
              mac->a[3], mac->a[4], mac->a[5]);

-    visit_type_str(v, &p, name, errp);
+    visit_type_str(v, name, &p, errp);
 }

 static void set_mac(Object *obj, Visitor *v, void *opaque,
@@ -478,7 +478,7 @@ static void set_mac(Object *obj, Visitor *v, void *opaque,
         return;
     }

-    visit_type_str(v, &str, name, &local_err);
+    visit_type_str(v, name, &str, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -561,11 +561,11 @@ static void set_pci_devfn(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_str(v, &str, name, &local_err);
+    visit_type_str(v, name, &str, &local_err);
     if (local_err) {
         error_free(local_err);
         local_err = NULL;
-        visit_type_int32(v, &value, name, &local_err);
+        visit_type_int32(v, name, &value, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
         } else if (value < -1 || value > 255) {
@@ -632,7 +632,7 @@ static void set_blocksize(Object *obj, Visitor *v, void 
*opaque,
         return;
     }

-    visit_type_uint16(v, &value, name, &local_err);
+    visit_type_uint16(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -678,7 +678,7 @@ static void get_pci_host_devaddr(Object *obj, Visitor *v, 
void *opaque,
                   addr->domain, addr->bus, addr->slot, addr->function);
     assert(rc == sizeof(buffer) - 1);

-    visit_type_str(v, &p, name, errp);
+    visit_type_str(v, name, &p, errp);
 }

 /*
@@ -703,7 +703,7 @@ static void set_pci_host_devaddr(Object *obj, Visitor *v, 
void *opaque,
         return;
     }

-    visit_type_str(v, &str, name, &local_err);
+    visit_type_str(v, name, &str, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -825,7 +825,7 @@ static void set_prop_arraylen(Object *obj, Visitor *v, void 
*opaque,
                    name);
         return;
     }
-    visit_type_uint32(v, alenptr, name, &local_err);
+    visit_type_uint32(v, name, alenptr, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1091,7 +1091,7 @@ static void get_size(Object *obj, Visitor *v, void 
*opaque,
     Property *prop = opaque;
     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_size(v, ptr, name, errp);
+    visit_type_size(v, name, ptr, errp);
 }

 static void set_size(Object *obj, Visitor *v, void *opaque,
@@ -1101,7 +1101,7 @@ static void set_size(Object *obj, Visitor *v, void 
*opaque,
     Property *prop = opaque;
     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

-    visit_type_size(v, ptr, name, errp);
+    visit_type_size(v, name, ptr, errp);
 }

 PropertyInfo qdev_prop_size = {
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index b3ad467..8e921e0 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -898,7 +898,7 @@ static void qdev_get_legacy_property(Object *obj, Visitor 
*v, void *opaque,
     char *ptr = buffer;

     prop->info->print(dev, prop, buffer, sizeof(buffer));
-    visit_type_str(v, &ptr, name, errp);
+    visit_type_str(v, name, &ptr, errp);
 }

 /**
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 426424a..c877a8e 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1769,7 +1769,7 @@ pc_machine_get_hotplug_memory_region_size(Object *obj, 
Visitor *v, void *opaque,
     PCMachineState *pcms = PC_MACHINE(obj);
     int64_t value = memory_region_size(&pcms->hotplug_memory.mr);

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void pc_machine_get_max_ram_below_4g(Object *obj, Visitor *v,
@@ -1779,7 +1779,7 @@ static void pc_machine_get_max_ram_below_4g(Object *obj, 
Visitor *v,
     PCMachineState *pcms = PC_MACHINE(obj);
     uint64_t value = pcms->max_ram_below_4g;

-    visit_type_size(v, &value, name, errp);
+    visit_type_size(v, name, &value, errp);
 }

 static void pc_machine_set_max_ram_below_4g(Object *obj, Visitor *v,
@@ -1790,7 +1790,7 @@ static void pc_machine_set_max_ram_below_4g(Object *obj, 
Visitor *v,
     Error *error = NULL;
     uint64_t value;

-    visit_type_size(v, &value, name, &error);
+    visit_type_size(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
@@ -1818,7 +1818,7 @@ static void pc_machine_get_vmport(Object *obj, Visitor 
*v, void *opaque,
     PCMachineState *pcms = PC_MACHINE(obj);
     OnOffAuto vmport = pcms->vmport;

-    visit_type_OnOffAuto(v, &vmport, name, errp);
+    visit_type_OnOffAuto(v, name, &vmport, errp);
 }

 static void pc_machine_set_vmport(Object *obj, Visitor *v, void *opaque,
@@ -1826,7 +1826,7 @@ static void pc_machine_set_vmport(Object *obj, Visitor 
*v, void *opaque,
 {
     PCMachineState *pcms = PC_MACHINE(obj);

-    visit_type_OnOffAuto(v, &pcms->vmport, name, errp);
+    visit_type_OnOffAuto(v, name, &pcms->vmport, errp);
 }

 bool pc_machine_is_smm_enabled(PCMachineState *pcms)
@@ -1860,7 +1860,7 @@ static void pc_machine_get_smm(Object *obj, Visitor *v, 
void *opaque,
     PCMachineState *pcms = PC_MACHINE(obj);
     OnOffAuto smm = pcms->smm;

-    visit_type_OnOffAuto(v, &smm, name, errp);
+    visit_type_OnOffAuto(v, name, &smm, errp);
 }

 static void pc_machine_set_smm(Object *obj, Visitor *v, void *opaque,
@@ -1868,7 +1868,7 @@ static void pc_machine_set_smm(Object *obj, Visitor *v, 
void *opaque,
 {
     PCMachineState *pcms = PC_MACHINE(obj);

-    visit_type_OnOffAuto(v, &pcms->smm, name, errp);
+    visit_type_OnOffAuto(v, name, &pcms->smm, errp);
 }

 static bool pc_machine_get_aligned_dimm(Object *obj, Error **errp)
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 788b361..6fb3a4e 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -203,7 +203,7 @@ static void ide_dev_get_bootindex(Object *obj, Visitor *v, 
void *opaque,
 {
     IDEDevice *d = IDE_DEVICE(obj);

-    visit_type_int32(v, &d->conf.bootindex, name, errp);
+    visit_type_int32(v, name, &d->conf.bootindex, errp);
 }

 static void ide_dev_set_bootindex(Object *obj, Visitor *v, void *opaque,
@@ -213,7 +213,7 @@ static void ide_dev_set_bootindex(Object *obj, Visitor *v, 
void *opaque,
     int32_t boot_index;
     Error *local_err = NULL;

-    visit_type_int32(v, &boot_index, name, &local_err);
+    visit_type_int32(v, name, &boot_index, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 9ff5796..502c87f 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -94,7 +94,7 @@ static void xics_prop_get_nr_irqs(Object *obj, Visitor *v,
     XICSState *icp = XICS_COMMON(obj);
     int64_t value = icp->nr_irqs;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void xics_prop_set_nr_irqs(Object *obj, Visitor *v,
@@ -105,7 +105,7 @@ static void xics_prop_set_nr_irqs(Object *obj, Visitor *v,
     Error *error = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &error);
+    visit_type_int(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
@@ -128,7 +128,7 @@ static void xics_prop_get_nr_servers(Object *obj, Visitor 
*v,
     XICSState *icp = XICS_COMMON(obj);
     int64_t value = icp->nr_servers;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void xics_prop_set_nr_servers(Object *obj, Visitor *v,
@@ -140,7 +140,7 @@ static void xics_prop_set_nr_servers(Object *obj, Visitor 
*v,
     Error *error = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &error);
+    visit_type_int(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index 1ffc803..5ce9818 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -576,7 +576,7 @@ static void ich9_lpc_get_sci_int(Object *obj, Visitor *v,
     ICH9LPCState *lpc = ICH9_LPC_DEVICE(obj);
     uint32_t value = ich9_lpc_sci_irq(lpc);

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void ich9_lpc_add_properties(ICH9LPCState *lpc)
diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index d5cdab2..123baeb 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -382,7 +382,7 @@ static void pc_dimm_get_size(Object *obj, Visitor *v, void 
*opaque,
     mr = host_memory_backend_get_memory(dimm->hostmem, errp);
     value = memory_region_size(mr);

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void pc_dimm_check_memdev_is_busy(Object *obj, const char *name,
diff --git a/hw/misc/edu.c b/hw/misc/edu.c
index ff4f8a9..3a5464c 100644
--- a/hw/misc/edu.c
+++ b/hw/misc/edu.c
@@ -369,7 +369,7 @@ static void edu_obj_uint64(Object *obj, Visitor *v, void 
*opaque,
 {
     uint64_t *val = opaque;

-    visit_type_uint64(v, val, name, errp);
+    visit_type_uint64(v, name, val, errp);
 }

 static void edu_instance_init(Object *obj)
diff --git a/hw/misc/tmp105.c b/hw/misc/tmp105.c
index f3fe8b8..1850315 100644
--- a/hw/misc/tmp105.c
+++ b/hw/misc/tmp105.c
@@ -58,7 +58,7 @@ static void tmp105_get_temperature(Object *obj, Visitor *v, 
void *opaque,
     TMP105State *s = TMP105(obj);
     int64_t value = s->temperature * 1000 / 256;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 /* Units are 0.001 centigrades relative to 0 C.  s->temperature is 8.8
@@ -71,7 +71,7 @@ static void tmp105_set_temperature(Object *obj, Visitor *v, 
void *opaque,
     Error *local_err = NULL;
     int64_t temp;

-    visit_type_int(v, &temp, name, &local_err);
+    visit_type_int(v, name, &temp, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/hw/net/ne2000-isa.c b/hw/net/ne2000-isa.c
index 18b0644..46ef304 100644
--- a/hw/net/ne2000-isa.c
+++ b/hw/net/ne2000-isa.c
@@ -99,7 +99,7 @@ static void isa_ne2000_get_bootindex(Object *obj, Visitor *v, 
void *opaque,
     ISANE2000State *isa = ISA_NE2000(obj);
     NE2000State *s = &isa->ne2000;

-    visit_type_int32(v, &s->c.bootindex, name, errp);
+    visit_type_int32(v, name, &s->c.bootindex, errp);
 }

 static void isa_ne2000_set_bootindex(Object *obj, Visitor *v, void *opaque,
@@ -110,7 +110,7 @@ static void isa_ne2000_set_bootindex(Object *obj, Visitor 
*v, void *opaque,
     int32_t boot_index;
     Error *local_err = NULL;

-    visit_type_int32(v, &boot_index, name, &local_err);
+    visit_type_int32(v, name, &boot_index, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index 715208b..8af33ec 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -221,7 +221,7 @@ static void i440fx_pcihost_get_pci_hole_start(Object *obj, 
Visitor *v,
     I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
     uint32_t value = s->pci_info.w32.begin;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void i440fx_pcihost_get_pci_hole_end(Object *obj, Visitor *v,
@@ -231,7 +231,7 @@ static void i440fx_pcihost_get_pci_hole_end(Object *obj, 
Visitor *v,
     I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
     uint32_t value = s->pci_info.w32.end;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void i440fx_pcihost_get_pci_hole64_start(Object *obj, Visitor *v,
@@ -243,7 +243,7 @@ static void i440fx_pcihost_get_pci_hole64_start(Object 
*obj, Visitor *v,

     pci_bus_get_w64_range(h->bus, &w64);

-    visit_type_uint64(v, &w64.begin, name, errp);
+    visit_type_uint64(v, name, &w64.begin, errp);
 }

 static void i440fx_pcihost_get_pci_hole64_end(Object *obj, Visitor *v,
@@ -255,7 +255,7 @@ static void i440fx_pcihost_get_pci_hole64_end(Object *obj, 
Visitor *v,

     pci_bus_get_w64_range(h->bus, &w64);

-    visit_type_uint64(v, &w64.end, name, errp);
+    visit_type_uint64(v, name, &w64.end, errp);
 }

 static void i440fx_pcihost_initfn(Object *obj)
diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index 1fb4707..2b3608a 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -73,7 +73,7 @@ static void q35_host_get_pci_hole_start(Object *obj, Visitor 
*v,
     Q35PCIHost *s = Q35_HOST_DEVICE(obj);
     uint32_t value = s->mch.pci_info.w32.begin;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void q35_host_get_pci_hole_end(Object *obj, Visitor *v,
@@ -83,7 +83,7 @@ static void q35_host_get_pci_hole_end(Object *obj, Visitor *v,
     Q35PCIHost *s = Q35_HOST_DEVICE(obj);
     uint32_t value = s->mch.pci_info.w32.end;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void q35_host_get_pci_hole64_start(Object *obj, Visitor *v,
@@ -95,7 +95,7 @@ static void q35_host_get_pci_hole64_start(Object *obj, 
Visitor *v,

     pci_bus_get_w64_range(h->bus, &w64);

-    visit_type_uint64(v, &w64.begin, name, errp);
+    visit_type_uint64(v, name, &w64.begin, errp);
 }

 static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v,
@@ -107,7 +107,7 @@ static void q35_host_get_pci_hole64_end(Object *obj, 
Visitor *v,

     pci_bus_get_w64_range(h->bus, &w64);

-    visit_type_uint64(v, &w64.end, name, errp);
+    visit_type_uint64(v, name, &w64.end, errp);
 }

 static void q35_host_get_mmcfg_size(Object *obj, Visitor *v,
@@ -117,7 +117,7 @@ static void q35_host_get_mmcfg_size(Object *obj, Visitor *v,
     PCIExpressHost *e = PCIE_HOST_BRIDGE(obj);
     uint32_t value = e->size;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static Property mch_props[] = {
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index 8be62c3..cc035eb 100644
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -220,7 +220,7 @@ static void prop_get_index(Object *obj, Visitor *v, void 
*opaque,
     sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj);
     sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
     uint32_t value = (uint32_t)drck->get_index(drc);
-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void prop_get_type(Object *obj, Visitor *v, void *opaque,
@@ -229,7 +229,7 @@ static void prop_get_type(Object *obj, Visitor *v, void 
*opaque,
     sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj);
     sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
     uint32_t value = (uint32_t)drck->get_type(drc);
-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static char *prop_get_name(Object *obj, Error **errp)
@@ -247,7 +247,7 @@ static void prop_get_entity_sense(Object *obj, Visitor *v, 
void *opaque,
     uint32_t value;

     drck->entity_sense(drc, &value);
-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void prop_get_fdt(Object *obj, Visitor *v, void *opaque,
@@ -259,7 +259,7 @@ static void prop_get_fdt(Object *obj, Visitor *v, void 
*opaque,
     void *fdt;

     if (!drc->fdt) {
-        visit_start_struct(v, NULL, NULL, name, 0, &err);
+        visit_start_struct(v, name, NULL, NULL, 0, &err);
         if (!err) {
             visit_end_struct(v, &err);
         }
@@ -282,7 +282,7 @@ static void prop_get_fdt(Object *obj, Visitor *v, void 
*opaque,
         case FDT_BEGIN_NODE:
             fdt_depth++;
             name = fdt_get_name(fdt, fdt_offset, &name_len);
-            visit_start_struct(v, NULL, NULL, name, 0, &err);
+            visit_start_struct(v, name, NULL, NULL, 0, &err);
             if (err) {
                 error_propagate(errp, err);
                 return;
@@ -308,7 +308,7 @@ static void prop_get_fdt(Object *obj, Visitor *v, void 
*opaque,
                 return;
             }
             for (i = 0; i < prop_len; i++) {
-                visit_type_uint8(v, (uint8_t *)&prop->data[i], NULL, &err);
+                visit_type_uint8(v, NULL, (uint8_t *)&prop->data[i], &err);
                 if (err) {
                     error_propagate(errp, err);
                     return;
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index 597d8fd..3261446 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -786,7 +786,7 @@ static void usb_msd_get_bootindex(Object *obj, Visitor *v, 
void *opaque,
     USBDevice *dev = USB_DEVICE(obj);
     MSDState *s = USB_STORAGE_DEV(dev);

-    visit_type_int32(v, &s->conf.bootindex, name, errp);
+    visit_type_int32(v, name, &s->conf.bootindex, errp);
 }

 static void usb_msd_set_bootindex(Object *obj, Visitor *v, void *opaque,
@@ -797,7 +797,7 @@ static void usb_msd_set_bootindex(Object *obj, Visitor *v, 
void *opaque,
     int32_t boot_index;
     Error *local_err = NULL;

-    visit_type_int32(v, &boot_index, name, &local_err);
+    visit_type_int32(v, name, &boot_index, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index 9cc7cf9..1d81a34 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -117,21 +117,21 @@ static void balloon_stats_get_all(Object *obj, Visitor *v,
     VirtIOBalloon *s = opaque;
     int i;

-    visit_start_struct(v, NULL, "guest-stats", name, 0, &err);
+    visit_start_struct(v, name, NULL, "guest-stats", 0, &err);
     if (err) {
         goto out;
     }
-    visit_type_int(v, &s->stats_last_update, "last-update", &err);
+    visit_type_int(v, "last-update", &s->stats_last_update, &err);
     if (err) {
         goto out_end;
     }

-    visit_start_struct(v, NULL, NULL, "stats", 0, &err);
+    visit_start_struct(v, "stats", NULL, NULL, 0, &err);
     if (err) {
         goto out_end;
     }
     for (i = 0; i < VIRTIO_BALLOON_S_NR; i++) {
-        visit_type_uint64(v, &s->stats[i], balloon_stat_names[i], &err);
+        visit_type_uint64(v, balloon_stat_names[i], &s->stats[i], &err);
         if (err) {
             goto out_nested;
         }
@@ -154,7 +154,7 @@ static void balloon_stats_get_poll_interval(Object *obj, 
Visitor *v,
                                             Error **errp)
 {
     VirtIOBalloon *s = opaque;
-    visit_type_int(v, &s->stats_poll_interval, name, errp);
+    visit_type_int(v, name, &s->stats_poll_interval, errp);
 }

 static void balloon_stats_set_poll_interval(Object *obj, Visitor *v,
@@ -165,7 +165,7 @@ static void balloon_stats_set_poll_interval(Object *obj, 
Visitor *v,
     Error *local_err = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &local_err);
+    visit_type_int(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h
index a14a16d..eb50116 100644
--- a/include/qapi/visitor.h
+++ b/include/qapi/visitor.h
@@ -27,8 +27,8 @@ typedef struct GenericList
     struct GenericList *next;
 } GenericList;

-void visit_start_struct(Visitor *v, void **obj, const char *kind,
-                        const char *name, size_t size, Error **errp);
+void visit_start_struct(Visitor *v, const char *name, void **obj,
+                        const char *kind, size_t size, Error **errp);
 void visit_end_struct(Visitor *v, Error **errp);
 void visit_start_implicit_struct(Visitor *v, void **obj, size_t size,
                                  Error **errp);
@@ -43,7 +43,7 @@ void visit_end_list(Visitor *v, Error **errp);
  * corresponding visit_type_*() needs calling; for other visitors,
  * leave address@hidden unchanged.  Return address@hidden for convenience.
  */
-bool visit_optional(Visitor *v, bool *present, const char *name);
+bool visit_optional(Visitor *v, const char *name, bool *present);

 /**
  * Determine the qtype of the item @name in the current object visit.
@@ -51,24 +51,34 @@ bool visit_optional(Visitor *v, bool *present, const char 
*name);
  * alternate type; for other visitors, leave address@hidden unchanged.
  * If @promote_int, treat integers as QTYPE_FLOAT.
  */
-void visit_get_next_type(Visitor *v, QType *type, bool promote_int,
-                         const char *name, Error **errp);
-void visit_type_enum(Visitor *v, int *obj, const char * const strings[],
-                     const char *kind, const char *name, Error **errp);
-void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp);
-void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error 
**errp);
-void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error 
**errp);
-void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error 
**errp);
-void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error 
**errp);
-void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp);
-void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error 
**errp);
-void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error 
**errp);
-void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error 
**errp);
-void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error 
**errp);
-void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp);
-void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp);
-void visit_type_number(Visitor *v, double *obj, const char *name, Error 
**errp);
-void visit_type_any(Visitor *v, QObject **obj, const char *name, Error **errp);
+void visit_get_next_type(Visitor *v, const char *name, QType *type,
+                         bool promote_int, Error **errp);
+void visit_type_enum(Visitor *v, const char *name, int *obj,
+                     const char *const strings[], const char *kind,
+                     Error **errp);
+void visit_type_int(Visitor *v, const char *name, int64_t *obj, Error **errp);
+void visit_type_uint8(Visitor *v, const char *name, uint8_t *obj,
+                      Error **errp);
+void visit_type_uint16(Visitor *v, const char *name, uint16_t *obj,
+                       Error **errp);
+void visit_type_uint32(Visitor *v, const char *name, uint32_t *obj,
+                       Error **errp);
+void visit_type_uint64(Visitor *v, const char *name, uint64_t *obj,
+                       Error **errp);
+void visit_type_int8(Visitor *v, const char *name, int8_t *obj, Error **errp);
+void visit_type_int16(Visitor *v, const char *name, int16_t *obj,
+                      Error **errp);
+void visit_type_int32(Visitor *v, const char *name, int32_t *obj,
+                      Error **errp);
+void visit_type_int64(Visitor *v, const char *name, int64_t *obj,
+                      Error **errp);
+void visit_type_size(Visitor *v, const char *name, uint64_t *obj,
+                     Error **errp);
+void visit_type_bool(Visitor *v, const char *name, bool *obj, Error **errp);
+void visit_type_str(Visitor *v, const char *name, char **obj, Error **errp);
+void visit_type_number(Visitor *v, const char *name, double *obj,
+                       Error **errp);
+void visit_type_any(Visitor *v, const char *name, QObject **obj, Error **errp);
 bool visit_start_union(Visitor *v, bool data_present, Error **errp);
 void visit_end_union(Visitor *v, bool data_present, Error **errp);

diff --git a/memory.c b/memory.c
index 93bd8ed..49eb809 100644
--- a/memory.c
+++ b/memory.c
@@ -934,7 +934,7 @@ static void memory_region_get_addr(Object *obj, Visitor *v, 
void *opaque,
     MemoryRegion *mr = MEMORY_REGION(obj);
     uint64_t value = mr->addr;

-    visit_type_uint64(v, &value, name, errp);
+    visit_type_uint64(v, name, &value, errp);
 }

 static void memory_region_get_container(Object *obj, Visitor *v, void *opaque,
@@ -946,7 +946,7 @@ static void memory_region_get_container(Object *obj, 
Visitor *v, void *opaque,
     if (mr->container) {
         path = object_get_canonical_path(OBJECT(mr->container));
     }
-    visit_type_str(v, &path, name, errp);
+    visit_type_str(v, name, &path, errp);
     if (mr->container) {
         g_free(path);
     }
@@ -966,7 +966,7 @@ static void memory_region_get_priority(Object *obj, Visitor 
*v, void *opaque,
     MemoryRegion *mr = MEMORY_REGION(obj);
     int32_t value = mr->priority;

-    visit_type_int32(v, &value, name, errp);
+    visit_type_int32(v, name, &value, errp);
 }

 static bool memory_region_get_may_overlap(Object *obj, Error **errp)
@@ -982,7 +982,7 @@ static void memory_region_get_size(Object *obj, Visitor *v, 
void *opaque,
     MemoryRegion *mr = MEMORY_REGION(obj);
     uint64_t value = memory_region_size(mr);

-    visit_type_uint64(v, &value, name, errp);
+    visit_type_uint64(v, name, &value, errp);
 }

 static void memory_region_initfn(Object *obj)
diff --git a/net/dump.c b/net/dump.c
index ce16a4b..86da036 100644
--- a/net/dump.c
+++ b/net/dump.c
@@ -277,7 +277,7 @@ static void filter_dump_get_maxlen(Object *obj, Visitor *v, 
void *opaque,
     NetFilterDumpState *nfds = FILTER_DUMP(obj);
     uint32_t value = nfds->maxlen;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void filter_dump_set_maxlen(Object *obj, Visitor *v, void *opaque,
@@ -287,7 +287,7 @@ static void filter_dump_set_maxlen(Object *obj, Visitor *v, 
void *opaque,
     Error *local_err = NULL;
     uint32_t value;

-    visit_type_uint32(v, &value, name, &local_err);
+    visit_type_uint32(v, name, &value, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/net/filter-buffer.c b/net/filter-buffer.c
index 57be149..3173d26 100644
--- a/net/filter-buffer.c
+++ b/net/filter-buffer.c
@@ -138,7 +138,7 @@ static void filter_buffer_get_interval(Object *obj, Visitor 
*v, void *opaque,
     FilterBufferState *s = FILTER_BUFFER(obj);
     uint32_t value = s->interval;

-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void filter_buffer_set_interval(Object *obj, Visitor *v, void *opaque,
@@ -148,7 +148,7 @@ static void filter_buffer_set_interval(Object *obj, Visitor 
*v, void *opaque,
     Error *local_err = NULL;
     uint32_t value;

-    visit_type_uint32(v, &value, name, &local_err);
+    visit_type_uint32(v, name, &value, &local_err);
     if (local_err) {
         goto out;
     }
diff --git a/net/net.c b/net/net.c
index 87dd356..428636a 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1035,9 +1035,9 @@ static int net_client_init1(const void *object, int 
is_netdev, Error **errp)
 static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
 {
     if (is_netdev) {
-        visit_type_Netdev(v, (Netdev **)object, NULL, errp);
+        visit_type_Netdev(v, NULL, (Netdev **)object, errp);
     } else {
-        visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
+        visit_type_NetLegacy(v, NULL, (NetLegacy **)object, errp);
     }
 }

diff --git a/numa.c b/numa.c
index fdfe294..35b846e 100644
--- a/numa.c
+++ b/numa.c
@@ -218,7 +218,7 @@ static int parse_numa(void *opaque, QemuOpts *opts, Error 
**errp)

     {
         OptsVisitor *ov = opts_visitor_new(opts);
-        visit_type_NumaOptions(opts_get_visitor(ov), &object, NULL, &err);
+        visit_type_NumaOptions(opts_get_visitor(ov), NULL, &object, &err);
         opts_visitor_cleanup(ov);
     }

@@ -245,8 +245,8 @@ error:

     if (object) {
         QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
-        visit_type_NumaOptions(qapi_dealloc_get_visitor(dv),
-                               &object, NULL, NULL);
+        visit_type_NumaOptions(qapi_dealloc_get_visitor(dv), NULL, &object,
+                               NULL);
         qapi_dealloc_visitor_cleanup(dv);
     }

diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index a48fd4e..609db22 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -17,8 +17,8 @@
 #include "qapi/visitor.h"
 #include "qapi/visitor-impl.h"

-void visit_start_struct(Visitor *v, void **obj, const char *kind,
-                        const char *name, size_t size, Error **errp)
+void visit_start_struct(Visitor *v, const char *name, void **obj,
+                        const char *kind, size_t size, Error **errp)
 {
     v->start_struct(v, obj, kind, name, size, errp);
 }
@@ -73,7 +73,7 @@ void visit_end_union(Visitor *v, bool data_present, Error 
**errp)
     }
 }

-bool visit_optional(Visitor *v, bool *present, const char *name)
+bool visit_optional(Visitor *v, const char *name, bool *present)
 {
     if (v->optional) {
         v->optional(v, present, name);
@@ -81,21 +81,22 @@ bool visit_optional(Visitor *v, bool *present, const char 
*name)
     return *present;
 }

-void visit_get_next_type(Visitor *v, QType *type, bool promote_int,
-                         const char *name, Error **errp)
+void visit_get_next_type(Visitor *v, const char *name, QType *type,
+                         bool promote_int, Error **errp)
 {
     if (v->get_next_type) {
         v->get_next_type(v, type, promote_int, name, errp);
     }
 }

-void visit_type_enum(Visitor *v, int *obj, const char * const strings[],
-                     const char *kind, const char *name, Error **errp)
+void visit_type_enum(Visitor *v, const char *name, int *obj,
+                     const char *const strings[], const char *kind,
+                     Error **errp)
 {
     v->type_enum(v, obj, strings, kind, name, errp);
 }

-void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp)
+void visit_type_int(Visitor *v, const char *name, int64_t *obj, Error **errp)
 {
     v->type_int64(v, obj, name, errp);
 }
@@ -117,14 +118,15 @@ static void visit_type_uintN(Visitor *v, uint64_t *obj, 
const char *name,
     }
 }

-void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp)
+void visit_type_uint8(Visitor *v, const char *name, uint8_t *obj,
+                      Error **errp)
 {
     uint64_t value = *obj;
     visit_type_uintN(v, &value, name, UINT8_MAX, "uint8_t", errp);
     *obj = value;
 }

-void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name,
+void visit_type_uint16(Visitor *v, const char *name, uint16_t *obj,
                        Error **errp)
 {
     uint64_t value = *obj;
@@ -132,7 +134,7 @@ void visit_type_uint16(Visitor *v, uint16_t *obj, const 
char *name,
     *obj = value;
 }

-void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name,
+void visit_type_uint32(Visitor *v, const char *name, uint32_t *obj,
                        Error **errp)
 {
     uint64_t value = *obj;
@@ -140,7 +142,7 @@ void visit_type_uint32(Visitor *v, uint32_t *obj, const 
char *name,
     *obj = value;
 }

-void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name,
+void visit_type_uint64(Visitor *v, const char *name, uint64_t *obj,
                        Error **errp)
 {
     v->type_uint64(v, obj, name, errp);
@@ -164,33 +166,37 @@ static void visit_type_intN(Visitor *v, int64_t *obj, 
const char *name,
     }
 }

-void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp)
+void visit_type_int8(Visitor *v, const char *name, int8_t *obj, Error **errp)
 {
     int64_t value = *obj;
     visit_type_intN(v, &value, name, INT8_MIN, INT8_MAX, "int8_t", errp);
     *obj = value;
 }

-void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp)
+void visit_type_int16(Visitor *v, const char *name, int16_t *obj,
+                      Error **errp)
 {
     int64_t value = *obj;
     visit_type_intN(v, &value, name, INT16_MIN, INT16_MAX, "int16_t", errp);
     *obj = value;
 }

-void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp)
+void visit_type_int32(Visitor *v, const char *name, int32_t *obj,
+                      Error **errp)
 {
     int64_t value = *obj;
     visit_type_intN(v, &value, name, INT32_MIN, INT32_MAX, "int32_t", errp);
     *obj = value;
 }

-void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
+void visit_type_int64(Visitor *v, const char *name, int64_t *obj,
+                      Error **errp)
 {
     v->type_int64(v, obj, name, errp);
 }

-void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp)
+void visit_type_size(Visitor *v, const char *name, uint64_t *obj,
+                     Error **errp)
 {
     if (v->type_size) {
         v->type_size(v, obj, name, errp);
@@ -199,23 +205,23 @@ void visit_type_size(Visitor *v, uint64_t *obj, const 
char *name, Error **errp)
     }
 }

-void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
+void visit_type_bool(Visitor *v, const char *name, bool *obj, Error **errp)
 {
     v->type_bool(v, obj, name, errp);
 }

-void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp)
+void visit_type_str(Visitor *v, const char *name, char **obj, Error **errp)
 {
     v->type_str(v, obj, name, errp);
 }

-void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp)
+void visit_type_number(Visitor *v, const char *name, double *obj,
+                       Error **errp)
 {
     v->type_number(v, obj, name, errp);
 }

-void visit_type_any(Visitor *v, QObject **obj, const char *name,
-                    Error **errp)
+void visit_type_any(Visitor *v, const char *name, QObject **obj, Error **errp)
 {
     v->type_any(v, obj, name, errp);
 }
@@ -236,7 +242,7 @@ void output_type_enum(Visitor *v, int *obj, const char * 
const strings[],
     }

     enum_str = (char *)strings[value];
-    visit_type_str(v, &enum_str, name, errp);
+    visit_type_str(v, name, &enum_str, errp);
 }

 void input_type_enum(Visitor *v, int *obj, const char * const strings[],
@@ -249,7 +255,7 @@ void input_type_enum(Visitor *v, int *obj, const char * 
const strings[],

     assert(strings);

-    visit_type_str(v, &enum_str, name, &local_err);
+    visit_type_str(v, name, &enum_str, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/qemu-img.c b/qemu-img.c
index 3d48b4f..e5c7bae 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -379,8 +379,8 @@ static void dump_json_image_check(ImageCheck *check, bool 
quiet)
     QString *str;
     QmpOutputVisitor *ov = qmp_output_visitor_new();
     QObject *obj;
-    visit_type_ImageCheck(qmp_output_get_visitor(ov),
-                          &check, NULL, &local_err);
+    visit_type_ImageCheck(qmp_output_get_visitor(ov), NULL, &check,
+                          &local_err);
     obj = qmp_output_get_qobject(ov);
     str = qobject_to_json_pretty(obj);
     assert(str != NULL);
@@ -1930,8 +1930,8 @@ static void dump_json_image_info_list(ImageInfoList *list)
     QString *str;
     QmpOutputVisitor *ov = qmp_output_visitor_new();
     QObject *obj;
-    visit_type_ImageInfoList(qmp_output_get_visitor(ov),
-                             &list, NULL, &local_err);
+    visit_type_ImageInfoList(qmp_output_get_visitor(ov), NULL, &list,
+                             &local_err);
     obj = qmp_output_get_qobject(ov);
     str = qobject_to_json_pretty(obj);
     assert(str != NULL);
@@ -1947,8 +1947,7 @@ static void dump_json_image_info(ImageInfo *info)
     QString *str;
     QmpOutputVisitor *ov = qmp_output_visitor_new();
     QObject *obj;
-    visit_type_ImageInfo(qmp_output_get_visitor(ov),
-                         &info, NULL, &local_err);
+    visit_type_ImageInfo(qmp_output_get_visitor(ov), NULL, &info, &local_err);
     obj = qmp_output_get_qobject(ov);
     str = qobject_to_json_pretty(obj);
     assert(str != NULL);
diff --git a/qom/object.c b/qom/object.c
index 98fbe17..6a98f22 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -1185,8 +1185,8 @@ int object_property_get_enum(Object *obj, const char 
*name,
     str = string_output_get_string(sov);
     siv = string_input_visitor_new(str);
     string_output_visitor_cleanup(sov);
-    visit_type_enum(string_input_get_visitor(siv),
-                    &ret, enumprop->strings, NULL, name, errp);
+    visit_type_enum(string_input_get_visitor(siv), name, &ret,
+                    enumprop->strings, NULL, errp);

     g_free(str);
     string_input_visitor_cleanup(siv);
@@ -1211,8 +1211,7 @@ void object_property_get_uint16List(Object *obj, const 
char *name,
     }
     str = string_output_get_string(ov);
     iv = string_input_visitor_new(str);
-    visit_type_uint16List(string_input_get_visitor(iv),
-                          list, NULL, errp);
+    visit_type_uint16List(string_input_get_visitor(iv), NULL, list, errp);

     g_free(str);
     string_input_visitor_cleanup(iv);
@@ -1284,7 +1283,7 @@ static void object_get_child_property(Object *obj, 
Visitor *v, void *opaque,
     gchar *path;

     path = object_get_canonical_path(child);
-    visit_type_str(v, &path, name, errp);
+    visit_type_str(v, name, &path, errp);
     g_free(path);
 }

@@ -1355,11 +1354,11 @@ static void object_get_link_property(Object *obj, 
Visitor *v, void *opaque,

     if (*child) {
         path = object_get_canonical_path(*child);
-        visit_type_str(v, &path, name, errp);
+        visit_type_str(v, name, &path, errp);
         g_free(path);
     } else {
         path = (gchar *)"";
-        visit_type_str(v, &path, name, errp);
+        visit_type_str(v, name, &path, errp);
     }
 }

@@ -1413,7 +1412,7 @@ static void object_set_link_property(Object *obj, Visitor 
*v, void *opaque,
     Object *new_target = NULL;
     char *path = NULL;

-    visit_type_str(v, &path, name, &local_err);
+    visit_type_str(v, name, &path, &local_err);

     if (!local_err && strcmp(path, "") != 0) {
         new_target = object_resolve_link(obj, name, path, &local_err);
@@ -1680,7 +1679,7 @@ static void property_get_str(Object *obj, Visitor *v, 
void *opaque,
         return;
     }

-    visit_type_str(v, &value, name, errp);
+    visit_type_str(v, name, &value, errp);
     g_free(value);
 }

@@ -1691,7 +1690,7 @@ static void property_set_str(Object *obj, Visitor *v, 
void *opaque,
     char *value;
     Error *local_err = NULL;

-    visit_type_str(v, &value, name, &local_err);
+    visit_type_str(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1749,7 +1748,7 @@ static void property_get_bool(Object *obj, Visitor *v, 
void *opaque,
         return;
     }

-    visit_type_bool(v, &value, name, errp);
+    visit_type_bool(v, name, &value, errp);
 }

 static void property_set_bool(Object *obj, Visitor *v, void *opaque,
@@ -1759,7 +1758,7 @@ static void property_set_bool(Object *obj, Visitor *v, 
void *opaque,
     bool value;
     Error *local_err = NULL;

-    visit_type_bool(v, &value, name, &local_err);
+    visit_type_bool(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1810,7 +1809,7 @@ static void property_get_enum(Object *obj, Visitor *v, 
void *opaque,
         return;
     }

-    visit_type_enum(v, &value, prop->strings, NULL, name, errp);
+    visit_type_enum(v, name, &value, prop->strings, NULL, errp);
 }

 static void property_set_enum(Object *obj, Visitor *v, void *opaque,
@@ -1820,7 +1819,7 @@ static void property_set_enum(Object *obj, Visitor *v, 
void *opaque,
     int value;
     Error *err = NULL;

-    visit_type_enum(v, &value, prop->strings, NULL, name, &err);
+    visit_type_enum(v, name, &value, prop->strings, NULL, &err);
     if (err) {
         error_propagate(errp, err);
         return;
@@ -1876,31 +1875,31 @@ static void property_get_tm(Object *obj, Visitor *v, 
void *opaque,
         goto out;
     }

-    visit_start_struct(v, NULL, "struct tm", name, 0, &err);
+    visit_start_struct(v, name, NULL, "struct tm", 0, &err);
     if (err) {
         goto out;
     }
-    visit_type_int32(v, &value.tm_year, "tm_year", &err);
+    visit_type_int32(v, "tm_year", &value.tm_year, &err);
     if (err) {
         goto out_end;
     }
-    visit_type_int32(v, &value.tm_mon, "tm_mon", &err);
+    visit_type_int32(v, "tm_mon", &value.tm_mon, &err);
     if (err) {
         goto out_end;
     }
-    visit_type_int32(v, &value.tm_mday, "tm_mday", &err);
+    visit_type_int32(v, "tm_mday", &value.tm_mday, &err);
     if (err) {
         goto out_end;
     }
-    visit_type_int32(v, &value.tm_hour, "tm_hour", &err);
+    visit_type_int32(v, "tm_hour", &value.tm_hour, &err);
     if (err) {
         goto out_end;
     }
-    visit_type_int32(v, &value.tm_min, "tm_min", &err);
+    visit_type_int32(v, "tm_min", &value.tm_min, &err);
     if (err) {
         goto out_end;
     }
-    visit_type_int32(v, &value.tm_sec, "tm_sec", &err);
+    visit_type_int32(v, "tm_sec", &value.tm_sec, &err);
     if (err) {
         goto out_end;
     }
@@ -1949,7 +1948,7 @@ static void property_get_uint8_ptr(Object *obj, Visitor 
*v,
                                    Error **errp)
 {
     uint8_t value = *(uint8_t *)opaque;
-    visit_type_uint8(v, &value, name, errp);
+    visit_type_uint8(v, name, &value, errp);
 }

 static void property_get_uint16_ptr(Object *obj, Visitor *v,
@@ -1957,7 +1956,7 @@ static void property_get_uint16_ptr(Object *obj, Visitor 
*v,
                                    Error **errp)
 {
     uint16_t value = *(uint16_t *)opaque;
-    visit_type_uint16(v, &value, name, errp);
+    visit_type_uint16(v, name, &value, errp);
 }

 static void property_get_uint32_ptr(Object *obj, Visitor *v,
@@ -1965,7 +1964,7 @@ static void property_get_uint32_ptr(Object *obj, Visitor 
*v,
                                    Error **errp)
 {
     uint32_t value = *(uint32_t *)opaque;
-    visit_type_uint32(v, &value, name, errp);
+    visit_type_uint32(v, name, &value, errp);
 }

 static void property_get_uint64_ptr(Object *obj, Visitor *v,
@@ -1973,7 +1972,7 @@ static void property_get_uint64_ptr(Object *obj, Visitor 
*v,
                                    Error **errp)
 {
     uint64_t value = *(uint64_t *)opaque;
-    visit_type_uint64(v, &value, name, errp);
+    visit_type_uint64(v, name, &value, errp);
 }

 void object_property_add_uint8_ptr(Object *obj, const char *name,
diff --git a/replay/replay-input.c b/replay/replay-input.c
index bc15f59..ade61e4 100644
--- a/replay/replay-input.c
+++ b/replay/replay-input.c
@@ -28,7 +28,7 @@ static InputEvent *qapi_clone_InputEvent(InputEvent *src)

     qov = qmp_output_visitor_new();
     ov = qmp_output_get_visitor(qov);
-    visit_type_InputEvent(ov, &src, NULL, &error_abort);
+    visit_type_InputEvent(ov, NULL, &src, &error_abort);
     obj = qmp_output_get_qobject(qov);
     qmp_output_visitor_cleanup(qov);
     if (!obj) {
@@ -37,7 +37,7 @@ static InputEvent *qapi_clone_InputEvent(InputEvent *src)

     qiv = qmp_input_visitor_new(obj);
     iv = qmp_input_get_visitor(qiv);
-    visit_type_InputEvent(iv, &dst, NULL, &error_abort);
+    visit_type_InputEvent(iv, NULL, &dst, &error_abort);
     qmp_input_visitor_cleanup(qiv);
     qobject_decref(obj);

diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index 561e47a..91c5a4e 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -131,7 +131,7 @@ static void qmp_marshal_output_%(c_name)s(%(c_type)s 
ret_in, QObject **ret_out,
     Visitor *v;

     v = qmp_output_get_visitor(qov);
-    visit_type_%(c_name)s(v, &ret_in, "unused", &err);
+    visit_type_%(c_name)s(v, "unused", &ret_in, &err);
     if (err) {
         goto out;
     }
@@ -142,7 +142,7 @@ out:
     qmp_output_visitor_cleanup(qov);
     qdv = qapi_dealloc_visitor_new();
     v = qapi_dealloc_get_visitor(qdv);
-    visit_type_%(c_name)s(v, &ret_in, "unused", NULL);
+    visit_type_%(c_name)s(v, "unused", &ret_in, NULL);
     qapi_dealloc_visitor_cleanup(qdv);
 }
 ''',
diff --git a/scripts/qapi-event.py b/scripts/qapi-event.py
index e37c07a..baf5f74 100644
--- a/scripts/qapi-event.py
+++ b/scripts/qapi-event.py
@@ -63,7 +63,7 @@ def gen_event_send(name, arg_type):
     qov = qmp_output_visitor_new();
     v = qmp_output_get_visitor(qov);

-    visit_start_struct(v, NULL, NULL, "%(name)s", 0, &err);
+    visit_start_struct(v, "%(name)s", NULL, NULL, 0, &err);
 ''',
                      name=name)
         ret += gen_err_check()
diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index 0d86269..d3f631a 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -155,7 +155,7 @@ void qapi_free_%(c_name)s(%(c_name)s *obj)

     qdv = qapi_dealloc_visitor_new();
     v = qapi_dealloc_get_visitor(qdv);
-    visit_type_%(c_name)s(v, &obj, NULL, NULL);
+    visit_type_%(c_name)s(v, NULL, &obj, NULL);
     qapi_dealloc_visitor_cleanup(qdv);
 }
 ''',
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 6bd188b..ca28b08 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -29,7 +29,7 @@ def gen_visit_decl(name, scalar=False):
     if not scalar:
         c_type += '*'
     return mcgen('''
-void visit_type_%(c_name)s(Visitor *v, %(c_type)sobj, const char *name, Error 
**errp);
+void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_type)sobj, Error 
**errp);
 ''',
                  c_name=c_name(name), c_type=c_type)

@@ -118,11 +118,11 @@ def gen_visit_struct(name, base, members):
     # call qapi_free_FOO() to avoid a memory leak of the partial FOO.
     ret += mcgen('''

-void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, const char *name, 
Error **errp)
+void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, 
Error **errp)
 {
     Error *err = NULL;

-    visit_start_struct(v, (void **)obj, "%(name)s", name, sizeof(%(c_name)s), 
&err);
+    visit_start_struct(v, name, (void **)obj, "%(name)s", sizeof(%(c_name)s), 
&err);
     if (err) {
         goto out;
     }
@@ -150,7 +150,7 @@ def gen_visit_list(name, element_type):
     # call qapi_free_FOOList() to avoid a memory leak of the partial FOOList.
     return mcgen('''

-void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, const char *name, 
Error **errp)
+void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, 
Error **errp)
 {
     Error *err = NULL;
     GenericList *i, **prev;
@@ -164,7 +164,7 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, 
const char *name, Error
          !err && (i = visit_next_list(v, prev, &err)) != NULL;
          prev = &i) {
         %(c_name)s *native_i = (%(c_name)s *)i;
-        visit_type_%(c_elt_type)s(v, &native_i->value, NULL, &err);
+        visit_type_%(c_elt_type)s(v, NULL, &native_i->value, &err);
     }

     error_propagate(errp, err);
@@ -180,10 +180,10 @@ out:
 def gen_visit_enum(name):
     return mcgen('''

-void visit_type_%(c_name)s(Visitor *v, %(c_name)s *obj, const char *name, 
Error **errp)
+void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s *obj, 
Error **errp)
 {
     int tmp = *obj;
-    visit_type_enum(v, &tmp, %(c_name)s_lookup, "%(name)s", name, errp);
+    visit_type_enum(v, name, &tmp, %(c_name)s_lookup, "%(name)s", errp);
     *obj = tmp;
 }
 ''',
@@ -198,7 +198,7 @@ def gen_visit_alternate(name, variants):

     ret = mcgen('''

-void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, const char *name, 
Error **errp)
+void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, 
Error **errp)
 {
     Error *err = NULL;

@@ -206,7 +206,7 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, 
const char *name, Error
     if (err) {
         goto out;
     }
-    visit_get_next_type(v, &(*obj)->type, %(promote_int)s, name, &err);
+    visit_get_next_type(v, name, &(*obj)->type, %(promote_int)s, &err);
     if (err) {
         goto out_obj;
     }
@@ -217,7 +217,7 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, 
const char *name, Error
     for var in variants.variants:
         ret += mcgen('''
     case %(case)s:
-        visit_type_%(c_type)s(v, &(*obj)->u.%(c_name)s, name, &err);
+        visit_type_%(c_type)s(v, name, &(*obj)->u.%(c_name)s, &err);
         break;
 ''',
                      case=var.type.alternate_qtype(),
@@ -255,11 +255,11 @@ def gen_visit_union(name, base, variants):

     ret += mcgen('''

-void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, const char *name, 
Error **errp)
+void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, 
Error **errp)
 {
     Error *err = NULL;

-    visit_start_struct(v, (void **)obj, "%(name)s", name, sizeof(%(c_name)s), 
&err);
+    visit_start_struct(v, name, (void **)obj, "%(name)s", sizeof(%(c_name)s), 
&err);
     if (err) {
         goto out;
     }
@@ -276,7 +276,7 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, 
const char *name, Error
                      c_name=base.c_name())
     else:
         ret += mcgen('''
-    visit_type_%(c_type)s(v, &(*obj)->%(c_name)s, "%(name)s", &err);
+    visit_type_%(c_type)s(v, "%(name)s", &(*obj)->%(c_name)s, &err);
 ''',
                      c_type=variants.tag_member.type.c_name(),
                      c_name=c_name(variants.tag_member.name),
@@ -300,7 +300,7 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, 
const char *name, Error
                                        var.name))
         if simple_union_type:
             ret += mcgen('''
-        visit_type_%(c_type)s(v, &(*obj)->u.%(c_name)s, "data", &err);
+        visit_type_%(c_type)s(v, "data", &(*obj)->u.%(c_name)s, &err);
 ''',
                          c_type=simple_union_type.c_name(),
                          c_name=c_name(var.name))
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 497eaba..3b4c62e 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -1647,7 +1647,7 @@ def gen_visit_fields(members, prefix='', need_cast=False, 
skiperr=False,
     for memb in members:
         if memb.optional:
             ret += mcgen('''
-    if (visit_optional(v, &%(prefix)shas_%(c_name)s, "%(name)s")) {
+    if (visit_optional(v, "%(name)s", &%(prefix)shas_%(c_name)s)) {
 ''',
                          prefix=prefix, c_name=c_name(memb.name),
                          name=memb.name, errp=errparg)
@@ -1660,7 +1660,7 @@ def gen_visit_fields(members, prefix='', need_cast=False, 
skiperr=False,
             cast = ''

         ret += mcgen('''
-    visit_type_%(c_type)s(v, %(cast)s&%(prefix)s%(c_name)s, "%(name)s", 
%(errp)s);
+    visit_type_%(c_type)s(v, "%(name)s", %(cast)s&%(prefix)s%(c_name)s, 
%(errp)s);
 ''',
                      c_type=memb.type.c_name(), prefix=prefix, cast=cast,
                      c_name=c_name(memb.name), name=memb.name,
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 13c5b69..110fa1c 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1520,7 +1520,7 @@ static void x86_cpuid_version_get_family(Object *obj, 
Visitor *v, void *opaque,
     if (value == 0xf) {
         value += (env->cpuid_version >> 20) & 0xff;
     }
-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void x86_cpuid_version_set_family(Object *obj, Visitor *v, void *opaque,
@@ -1533,7 +1533,7 @@ static void x86_cpuid_version_set_family(Object *obj, 
Visitor *v, void *opaque,
     Error *local_err = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &local_err);
+    visit_type_int(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1561,7 +1561,7 @@ static void x86_cpuid_version_get_model(Object *obj, 
Visitor *v, void *opaque,

     value = (env->cpuid_version >> 4) & 0xf;
     value |= ((env->cpuid_version >> 16) & 0xf) << 4;
-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void x86_cpuid_version_set_model(Object *obj, Visitor *v, void *opaque,
@@ -1574,7 +1574,7 @@ static void x86_cpuid_version_set_model(Object *obj, 
Visitor *v, void *opaque,
     Error *local_err = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &local_err);
+    visit_type_int(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1598,7 +1598,7 @@ static void x86_cpuid_version_get_stepping(Object *obj, 
Visitor *v,
     int64_t value;

     value = env->cpuid_version & 0xf;
-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void x86_cpuid_version_set_stepping(Object *obj, Visitor *v,
@@ -1612,7 +1612,7 @@ static void x86_cpuid_version_set_stepping(Object *obj, 
Visitor *v,
     Error *local_err = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &local_err);
+    visit_type_int(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1705,7 +1705,7 @@ static void x86_cpuid_get_tsc_freq(Object *obj, Visitor 
*v, void *opaque,
     int64_t value;

     value = cpu->env.tsc_khz * 1000;
-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, void *opaque,
@@ -1717,7 +1717,7 @@ static void x86_cpuid_set_tsc_freq(Object *obj, Visitor 
*v, void *opaque,
     Error *local_err = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &local_err);
+    visit_type_int(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -1737,7 +1737,7 @@ static void x86_cpuid_get_apic_id(Object *obj, Visitor 
*v, void *opaque,
     X86CPU *cpu = X86_CPU(obj);
     int64_t value = cpu->apic_id;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void x86_cpuid_set_apic_id(Object *obj, Visitor *v, void *opaque,
@@ -1756,7 +1756,7 @@ static void x86_cpuid_set_apic_id(Object *obj, Visitor 
*v, void *opaque,
         return;
     }

-    visit_type_int(v, &value, name, &error);
+    visit_type_int(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
@@ -1801,7 +1801,7 @@ static void x86_cpu_get_feature_words(Object *obj, 
Visitor *v, void *opaque,
         list = &list_entries[w];
     }

-    visit_type_X86CPUFeatureWordInfoList(v, &list, "feature-words", &err);
+    visit_type_X86CPUFeatureWordInfoList(v, "feature-words", &list, &err);
     error_propagate(errp, err);
 }

@@ -1811,7 +1811,7 @@ static void x86_get_hv_spinlocks(Object *obj, Visitor *v, 
void *opaque,
     X86CPU *cpu = X86_CPU(obj);
     int64_t value = cpu->hyperv_spinlock_attempts;

-    visit_type_int(v, &value, name, errp);
+    visit_type_int(v, name, &value, errp);
 }

 static void x86_set_hv_spinlocks(Object *obj, Visitor *v, void *opaque,
@@ -1823,7 +1823,7 @@ static void x86_set_hv_spinlocks(Object *obj, Visitor *v, 
void *opaque,
     Error *err = NULL;
     int64_t value;

-    visit_type_int(v, &value, name, &err);
+    visit_type_int(v, name, &value, &err);
     if (err) {
         error_propagate(errp, err);
         return;
@@ -2928,7 +2928,7 @@ static void x86_cpu_get_bit_prop(Object *obj,
 {
     BitProperty *fp = opaque;
     bool value = (*fp->ptr & fp->mask) == fp->mask;
-    visit_type_bool(v, &value, name, errp);
+    visit_type_bool(v, name, &value, errp);
 }

 static void x86_cpu_set_bit_prop(Object *obj,
@@ -2947,7 +2947,7 @@ static void x86_cpu_set_bit_prop(Object *obj,
         return;
     }

-    visit_type_bool(v, &value, name, &local_err);
+    visit_type_bool(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index e88dc7f..f3a304c 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -8059,7 +8059,7 @@ static void powerpc_get_compat(Object *obj, Visitor *v,
         break;
     }

-    visit_type_str(v, &value, name, errp);
+    visit_type_str(v, name, &value, errp);
 }

 static void powerpc_set_compat(Object *obj, Visitor *v,
@@ -8070,7 +8070,7 @@ static void powerpc_set_compat(Object *obj, Visitor *v,
     Property *prop = opaque;
     uint32_t *max_compat = qdev_get_prop_ptr(DEVICE(obj), prop);

-    visit_type_str(v, &value, name, &error);
+    visit_type_str(v, name, &value, &error);
     if (error) {
         error_propagate(errp, error);
         return;
diff --git a/tests/test-opts-visitor.c b/tests/test-opts-visitor.c
index 1c753d9..9600b97 100644
--- a/tests/test-opts-visitor.c
+++ b/tests/test-opts-visitor.c
@@ -44,7 +44,7 @@ setup_fixture(OptsVisitorFixture *f, gconstpointer test_data)
     g_assert(opts != NULL);

     ov = opts_visitor_new(opts);
-    visit_type_UserDefOptions(opts_get_visitor(ov), &f->userdef, NULL,
+    visit_type_UserDefOptions(opts_get_visitor(ov), NULL, &f->userdef,
                               &f->err);
     opts_visitor_cleanup(ov);
     qemu_opts_del(opts);
@@ -58,8 +58,8 @@ teardown_fixture(OptsVisitorFixture *f, gconstpointer 
test_data)
         QapiDeallocVisitor *dv;

         dv = qapi_dealloc_visitor_new();
-        visit_type_UserDefOptions(qapi_dealloc_get_visitor(dv), &f->userdef,
-                                  NULL, NULL);
+        visit_type_UserDefOptions(qapi_dealloc_get_visitor(dv), NULL,
+                                  &f->userdef, NULL);
         qapi_dealloc_visitor_cleanup(dv);
     }
     error_free(f->err);
diff --git a/tests/test-qdev-global-props.c b/tests/test-qdev-global-props.c
index 0be9835..e728611 100644
--- a/tests/test-qdev-global-props.c
+++ b/tests/test-qdev-global-props.c
@@ -124,7 +124,7 @@ static void prop1_accessor(Object *obj,
 {
     MyType *mt = DYNAMIC_TYPE(obj);

-    visit_type_uint32(v, &mt->prop1, name, errp);
+    visit_type_uint32(v, name, &mt->prop1, errp);
 }

 static void prop2_accessor(Object *obj,
@@ -135,7 +135,7 @@ static void prop2_accessor(Object *obj,
 {
     MyType *mt = DYNAMIC_TYPE(obj);

-    visit_type_uint32(v, &mt->prop2, name, errp);
+    visit_type_uint32(v, name, &mt->prop2, errp);
 }

 static void dynamic_instance_init(Object *obj)
diff --git a/tests/test-qmp-commands.c b/tests/test-qmp-commands.c
index 9f35b80..4d267b6 100644
--- a/tests/test-qmp-commands.c
+++ b/tests/test-qmp-commands.c
@@ -217,7 +217,7 @@ static void test_dealloc_partial(void)
         qdict_put_obj(ud2_dict, "string0", QOBJECT(qstring_from_str(text)));

         qiv = qmp_input_visitor_new(QOBJECT(ud2_dict));
-        visit_type_UserDefTwo(qmp_input_get_visitor(qiv), &ud2, NULL, &err);
+        visit_type_UserDefTwo(qmp_input_get_visitor(qiv), NULL, &ud2, &err);
         qmp_input_visitor_cleanup(qiv);
         QDECREF(ud2_dict);
     }
diff --git a/tests/test-qmp-input-strict.c b/tests/test-qmp-input-strict.c
index f1c2e3b..775ad39 100644
--- a/tests/test-qmp-input-strict.c
+++ b/tests/test-qmp-input-strict.c
@@ -98,7 +98,7 @@ static void test_validate_struct(TestInputVisitorData *data,

     v = validate_test_init(data, "{ 'integer': -42, 'boolean': true, 'string': 
'foo' }");

-    visit_type_TestStruct(v, &p, NULL, &error_abort);
+    visit_type_TestStruct(v, NULL, &p, &error_abort);
     g_free(p->string);
     g_free(p);
 }
@@ -114,7 +114,7 @@ static void 
test_validate_struct_nested(TestInputVisitorData *data,
                            "'dict2': { 'userdef': { 'integer': 42, "
                            "'string': 'string' }, 'string': 'string2'}}}");

-    visit_type_UserDefTwo(v, &udp, NULL, &error_abort);
+    visit_type_UserDefTwo(v, NULL, &udp, &error_abort);
     qapi_free_UserDefTwo(udp);
 }

@@ -126,7 +126,7 @@ static void test_validate_list(TestInputVisitorData *data,

     v = validate_test_init(data, "[ { 'string': 'string0', 'integer': 42 }, { 
'string': 'string1', 'integer': 43 }, { 'string': 'string2', 'integer': 44 } 
]");

-    visit_type_UserDefOneList(v, &head, NULL, &error_abort);
+    visit_type_UserDefOneList(v, NULL, &head, &error_abort);
     qapi_free_UserDefOneList(head);
 }

@@ -138,7 +138,7 @@ static void 
test_validate_union_native_list(TestInputVisitorData *data,

     v = validate_test_init(data, "{ 'type': 'integer', 'data' : [ 1, 2 ] }");

-    visit_type_UserDefNativeListUnion(v, &tmp, NULL, &error_abort);
+    visit_type_UserDefNativeListUnion(v, NULL, &tmp, &error_abort);
     qapi_free_UserDefNativeListUnion(tmp);
 }

@@ -154,7 +154,7 @@ static void test_validate_union_flat(TestInputVisitorData 
*data,
                            "'string': 'str', "
                            "'boolean': true }");

-    visit_type_UserDefFlatUnion(v, &tmp, NULL, &error_abort);
+    visit_type_UserDefFlatUnion(v, NULL, &tmp, &error_abort);
     qapi_free_UserDefFlatUnion(tmp);
 }

@@ -166,7 +166,7 @@ static void test_validate_alternate(TestInputVisitorData 
*data,

     v = validate_test_init(data, "42");

-    visit_type_UserDefAlternate(v, &tmp, NULL, &error_abort);
+    visit_type_UserDefAlternate(v, NULL, &tmp, &error_abort);
     qapi_free_UserDefAlternate(tmp);
 }

@@ -179,7 +179,7 @@ static void test_validate_fail_struct(TestInputVisitorData 
*data,

     v = validate_test_init(data, "{ 'integer': -42, 'boolean': true, 'string': 
'foo', 'extra': 42 }");

-    visit_type_TestStruct(v, &p, NULL, &err);
+    visit_type_TestStruct(v, NULL, &p, &err);
     error_free_or_abort(&err);
     if (p) {
         g_free(p->string);
@@ -196,7 +196,7 @@ static void 
test_validate_fail_struct_nested(TestInputVisitorData *data,

     v = validate_test_init(data, "{ 'string0': 'string0', 'dict1': { 
'string1': 'string1', 'dict2': { 'userdef1': { 'integer': 42, 'string': 
'string', 'extra': [42, 23, {'foo':'bar'}] }, 'string2': 'string2'}}}");

-    visit_type_UserDefTwo(v, &udp, NULL, &err);
+    visit_type_UserDefTwo(v, NULL, &udp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefTwo(udp);
 }
@@ -210,7 +210,7 @@ static void test_validate_fail_list(TestInputVisitorData 
*data,

     v = validate_test_init(data, "[ { 'string': 'string0', 'integer': 42 }, { 
'string': 'string1', 'integer': 43 }, { 'string': 'string2', 'integer': 44, 
'extra': 'ggg' } ]");

-    visit_type_UserDefOneList(v, &head, NULL, &err);
+    visit_type_UserDefOneList(v, NULL, &head, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefOneList(head);
 }
@@ -225,7 +225,7 @@ static void 
test_validate_fail_union_native_list(TestInputVisitorData *data,
     v = validate_test_init(data,
                            "{ 'type': 'integer', 'data' : [ 'string' ] }");

-    visit_type_UserDefNativeListUnion(v, &tmp, NULL, &err);
+    visit_type_UserDefNativeListUnion(v, NULL, &tmp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefNativeListUnion(tmp);
 }
@@ -239,7 +239,7 @@ static void 
test_validate_fail_union_flat(TestInputVisitorData *data,

     v = validate_test_init(data, "{ 'string': 'c', 'integer': 41, 'boolean': 
true }");

-    visit_type_UserDefFlatUnion(v, &tmp, NULL, &err);
+    visit_type_UserDefFlatUnion(v, NULL, &tmp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefFlatUnion(tmp);
 }
@@ -254,7 +254,7 @@ static void 
test_validate_fail_union_flat_no_discrim(TestInputVisitorData *data,
     /* test situation where discriminator field ('enum1' here) is missing */
     v = validate_test_init(data, "{ 'integer': 42, 'string': 'c', 'string1': 
'd', 'string2': 'e' }");

-    visit_type_UserDefFlatUnion2(v, &tmp, NULL, &err);
+    visit_type_UserDefFlatUnion2(v, NULL, &tmp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefFlatUnion2(tmp);
 }
@@ -268,7 +268,7 @@ static void 
test_validate_fail_alternate(TestInputVisitorData *data,

     v = validate_test_init(data, "3.14");

-    visit_type_UserDefAlternate(v, &tmp, NULL, &err);
+    visit_type_UserDefAlternate(v, NULL, &tmp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefAlternate(tmp);
 }
@@ -281,7 +281,7 @@ static void 
do_test_validate_qmp_introspect(TestInputVisitorData *data,

     v = validate_test_init_raw(data, schema_json);

-    visit_type_SchemaInfoList(v, &schema, NULL, &error_abort);
+    visit_type_SchemaInfoList(v, NULL, &schema, &error_abort);
     g_assert(schema);

     qapi_free_SchemaInfoList(schema);
diff --git a/tests/test-qmp-input-visitor.c b/tests/test-qmp-input-visitor.c
index b4a5bee..f6bd408 100644
--- a/tests/test-qmp-input-visitor.c
+++ b/tests/test-qmp-input-visitor.c
@@ -93,7 +93,7 @@ static void test_visitor_in_int(TestInputVisitorData *data,

     v = visitor_input_test_init(data, "%" PRId64, value);

-    visit_type_int(v, &res, NULL, &error_abort);
+    visit_type_int(v, NULL, &res, &error_abort);
     g_assert_cmpint(res, ==, value);
 }

@@ -110,7 +110,7 @@ static void 
test_visitor_in_int_overflow(TestInputVisitorData *data,
      */
     v = visitor_input_test_init(data, "%f", DBL_MAX);

-    visit_type_int(v, &res, NULL, &err);
+    visit_type_int(v, NULL, &res, &err);
     error_free_or_abort(&err);
 }

@@ -122,7 +122,7 @@ static void test_visitor_in_bool(TestInputVisitorData *data,

     v = visitor_input_test_init(data, "true");

-    visit_type_bool(v, &res, NULL, &error_abort);
+    visit_type_bool(v, NULL, &res, &error_abort);
     g_assert_cmpint(res, ==, true);
 }

@@ -134,7 +134,7 @@ static void test_visitor_in_number(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, "%f", value);

-    visit_type_number(v, &res, NULL, &error_abort);
+    visit_type_number(v, NULL, &res, &error_abort);
     g_assert_cmpfloat(res, ==, value);
 }

@@ -146,7 +146,7 @@ static void test_visitor_in_string(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, "%s", value);

-    visit_type_str(v, &res, NULL, &error_abort);
+    visit_type_str(v, NULL, &res, &error_abort);
     g_assert_cmpstr(res, ==, value);

     g_free(res);
@@ -163,7 +163,7 @@ static void test_visitor_in_enum(TestInputVisitorData *data,

         v = visitor_input_test_init(data, "%s", EnumOne_lookup[i]);

-        visit_type_EnumOne(v, &res, NULL, &error_abort);
+        visit_type_EnumOne(v, NULL, &res, &error_abort);
         g_assert_cmpint(i, ==, res);
     }
 }
@@ -177,7 +177,7 @@ static void test_visitor_in_struct(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, "{ 'integer': -42, 'boolean': true, 
'string': 'foo' }");

-    visit_type_TestStruct(v, &p, NULL, &error_abort);
+    visit_type_TestStruct(v, NULL, &p, &error_abort);
     g_assert_cmpint(p->integer, ==, -42);
     g_assert(p->boolean == true);
     g_assert_cmpstr(p->string, ==, "foo");
@@ -197,7 +197,7 @@ static void 
test_visitor_in_struct_nested(TestInputVisitorData *data,
                                 "'dict2': { 'userdef': { 'integer': 42, "
                                 "'string': 'string' }, 'string': 
'string2'}}}");

-    visit_type_UserDefTwo(v, &udp, NULL, &error_abort);
+    visit_type_UserDefTwo(v, NULL, &udp, &error_abort);

     g_assert_cmpstr(udp->string0, ==, "string0");
     g_assert_cmpstr(udp->dict1->string1, ==, "string1");
@@ -218,7 +218,7 @@ static void test_visitor_in_list(TestInputVisitorData *data,

     v = visitor_input_test_init(data, "[ { 'string': 'string0', 'integer': 42 
}, { 'string': 'string1', 'integer': 43 }, { 'string': 'string2', 'integer': 44 
} ]");

-    visit_type_UserDefOneList(v, &head, NULL, &error_abort);
+    visit_type_UserDefOneList(v, NULL, &head, &error_abort);
     g_assert(head != NULL);

     for (i = 0, item = head; item; item = item->next, i++) {
@@ -234,7 +234,7 @@ static void test_visitor_in_list(TestInputVisitorData *data,

     /* An empty list is valid */
     v = visitor_input_test_init(data, "[]");
-    visit_type_UserDefOneList(v, &head, NULL, &error_abort);
+    visit_type_UserDefOneList(v, NULL, &head, &error_abort);
     g_assert(!head);
 }

@@ -250,14 +250,14 @@ static void test_visitor_in_any(TestInputVisitorData 
*data,
     QObject *qobj;

     v = visitor_input_test_init(data, "-42");
-    visit_type_any(v, &res, NULL, &error_abort);
+    visit_type_any(v, NULL, &res, &error_abort);
     qint = qobject_to_qint(res);
     g_assert(qint);
     g_assert_cmpint(qint_get_int(qint), ==, -42);
     qobject_decref(res);

     v = visitor_input_test_init(data, "{ 'integer': -42, 'boolean': true, 
'string': 'foo' }");
-    visit_type_any(v, &res, NULL, &error_abort);
+    visit_type_any(v, NULL, &res, &error_abort);
     qdict = qobject_to_qdict(res);
     g_assert(qdict && qdict_size(qdict) == 3);
     qobj = qdict_get(qdict, "integer");
@@ -291,7 +291,7 @@ static void test_visitor_in_union_flat(TestInputVisitorData 
*data,
                                 "'string': 'str', "
                                 "'boolean': true }");

-    visit_type_UserDefFlatUnion(v, &tmp, NULL, &error_abort);
+    visit_type_UserDefFlatUnion(v, NULL, &tmp, &error_abort);
     g_assert_cmpint(tmp->enum1, ==, ENUM_ONE_VALUE1);
     g_assert_cmpstr(tmp->string, ==, "str");
     g_assert_cmpint(tmp->integer, ==, 41);
@@ -311,19 +311,19 @@ static void 
test_visitor_in_alternate(TestInputVisitorData *data,
     UserDefAlternate *tmp;

     v = visitor_input_test_init(data, "42");
-    visit_type_UserDefAlternate(v, &tmp, NULL, &error_abort);
+    visit_type_UserDefAlternate(v, NULL, &tmp, &error_abort);
     g_assert_cmpint(tmp->type, ==, QTYPE_QINT);
     g_assert_cmpint(tmp->u.i, ==, 42);
     qapi_free_UserDefAlternate(tmp);

     v = visitor_input_test_init(data, "'string'");
-    visit_type_UserDefAlternate(v, &tmp, NULL, &error_abort);
+    visit_type_UserDefAlternate(v, NULL, &tmp, &error_abort);
     g_assert_cmpint(tmp->type, ==, QTYPE_QSTRING);
     g_assert_cmpstr(tmp->u.s, ==, "string");
     qapi_free_UserDefAlternate(tmp);

     v = visitor_input_test_init(data, "false");
-    visit_type_UserDefAlternate(v, &tmp, NULL, &err);
+    visit_type_UserDefAlternate(v, NULL, &tmp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefAlternate(tmp);
 }
@@ -343,36 +343,36 @@ static void 
test_visitor_in_alternate_number(TestInputVisitorData *data,
     /* Parsing an int */

     v = visitor_input_test_init(data, "42");
-    visit_type_AltStrBool(v, &asb, NULL, &err);
+    visit_type_AltStrBool(v, NULL, &asb, &err);
     error_free_or_abort(&err);
     qapi_free_AltStrBool(asb);

     v = visitor_input_test_init(data, "42");
-    visit_type_AltStrNum(v, &asn, NULL, &error_abort);
+    visit_type_AltStrNum(v, NULL, &asn, &error_abort);
     g_assert_cmpint(asn->type, ==, QTYPE_QFLOAT);
     g_assert_cmpfloat(asn->u.n, ==, 42);
     qapi_free_AltStrNum(asn);

     v = visitor_input_test_init(data, "42");
-    visit_type_AltNumStr(v, &ans, NULL, &error_abort);
+    visit_type_AltNumStr(v, NULL, &ans, &error_abort);
     g_assert_cmpint(ans->type, ==, QTYPE_QFLOAT);
     g_assert_cmpfloat(ans->u.n, ==, 42);
     qapi_free_AltNumStr(ans);

     v = visitor_input_test_init(data, "42");
-    visit_type_AltStrInt(v, &asi, NULL, &error_abort);
+    visit_type_AltStrInt(v, NULL, &asi, &error_abort);
     g_assert_cmpint(asi->type, ==, QTYPE_QINT);
     g_assert_cmpint(asi->u.i, ==, 42);
     qapi_free_AltStrInt(asi);

     v = visitor_input_test_init(data, "42");
-    visit_type_AltIntNum(v, &ain, NULL, &error_abort);
+    visit_type_AltIntNum(v, NULL, &ain, &error_abort);
     g_assert_cmpint(ain->type, ==, QTYPE_QINT);
     g_assert_cmpint(ain->u.i, ==, 42);
     qapi_free_AltIntNum(ain);

     v = visitor_input_test_init(data, "42");
-    visit_type_AltNumInt(v, &ani, NULL, &error_abort);
+    visit_type_AltNumInt(v, NULL, &ani, &error_abort);
     g_assert_cmpint(ani->type, ==, QTYPE_QINT);
     g_assert_cmpint(ani->u.i, ==, 42);
     qapi_free_AltNumInt(ani);
@@ -380,35 +380,35 @@ static void 
test_visitor_in_alternate_number(TestInputVisitorData *data,
     /* Parsing a double */

     v = visitor_input_test_init(data, "42.5");
-    visit_type_AltStrBool(v, &asb, NULL, &err);
+    visit_type_AltStrBool(v, NULL, &asb, &err);
     error_free_or_abort(&err);
     qapi_free_AltStrBool(asb);

     v = visitor_input_test_init(data, "42.5");
-    visit_type_AltStrNum(v, &asn, NULL, &error_abort);
+    visit_type_AltStrNum(v, NULL, &asn, &error_abort);
     g_assert_cmpint(asn->type, ==, QTYPE_QFLOAT);
     g_assert_cmpfloat(asn->u.n, ==, 42.5);
     qapi_free_AltStrNum(asn);

     v = visitor_input_test_init(data, "42.5");
-    visit_type_AltNumStr(v, &ans, NULL, &error_abort);
+    visit_type_AltNumStr(v, NULL, &ans, &error_abort);
     g_assert_cmpint(ans->type, ==, QTYPE_QFLOAT);
     g_assert_cmpfloat(ans->u.n, ==, 42.5);
     qapi_free_AltNumStr(ans);

     v = visitor_input_test_init(data, "42.5");
-    visit_type_AltStrInt(v, &asi, NULL, &err);
+    visit_type_AltStrInt(v, NULL, &asi, &err);
     error_free_or_abort(&err);
     qapi_free_AltStrInt(asi);

     v = visitor_input_test_init(data, "42.5");
-    visit_type_AltIntNum(v, &ain, NULL, &error_abort);
+    visit_type_AltIntNum(v, NULL, &ain, &error_abort);
     g_assert_cmpint(ain->type, ==, QTYPE_QFLOAT);
     g_assert_cmpfloat(ain->u.n, ==, 42.5);
     qapi_free_AltIntNum(ain);

     v = visitor_input_test_init(data, "42.5");
-    visit_type_AltNumInt(v, &ani, NULL, &error_abort);
+    visit_type_AltNumInt(v, NULL, &ani, &error_abort);
     g_assert_cmpint(ani->type, ==, QTYPE_QFLOAT);
     g_assert_cmpfloat(ani->u.n, ==, 42.5);
     qapi_free_AltNumInt(ani);
@@ -435,7 +435,7 @@ static void 
test_native_list_integer_helper(TestInputVisitorData *data,
                            gstr_list->str);
     v = visitor_input_test_init_raw(data,  gstr_union->str);

-    visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &error_abort);
+    visit_type_UserDefNativeListUnion(v, NULL, &cvalue, &error_abort);
     g_assert(cvalue != NULL);
     g_assert_cmpint(cvalue->type, ==, kind);

@@ -596,7 +596,7 @@ static void 
test_visitor_in_native_list_bool(TestInputVisitorData *data,
                            gstr_list->str);
     v = visitor_input_test_init_raw(data,  gstr_union->str);

-    visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &error_abort);
+    visit_type_UserDefNativeListUnion(v, NULL, &cvalue, &error_abort);
     g_assert(cvalue != NULL);
     g_assert_cmpint(cvalue->type, ==, USER_DEF_NATIVE_LIST_UNION_KIND_BOOLEAN);

@@ -629,7 +629,7 @@ static void 
test_visitor_in_native_list_string(TestInputVisitorData *data,
                            gstr_list->str);
     v = visitor_input_test_init_raw(data,  gstr_union->str);

-    visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &error_abort);
+    visit_type_UserDefNativeListUnion(v, NULL, &cvalue, &error_abort);
     g_assert(cvalue != NULL);
     g_assert_cmpint(cvalue->type, ==, USER_DEF_NATIVE_LIST_UNION_KIND_STRING);

@@ -666,7 +666,7 @@ static void 
test_visitor_in_native_list_number(TestInputVisitorData *data,
                            gstr_list->str);
     v = visitor_input_test_init_raw(data,  gstr_union->str);

-    visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &error_abort);
+    visit_type_UserDefNativeListUnion(v, NULL, &cvalue, &error_abort);
     g_assert(cvalue != NULL);
     g_assert_cmpint(cvalue->type, ==, USER_DEF_NATIVE_LIST_UNION_KIND_NUMBER);

@@ -706,7 +706,7 @@ static void test_visitor_in_errors(TestInputVisitorData 
*data,
     v = visitor_input_test_init(data, "{ 'integer': false, 'boolean': 'foo', "
                                 "'string': -42 }");

-    visit_type_TestStruct(v, &p, NULL, &err);
+    visit_type_TestStruct(v, NULL, &p, &err);
     error_free_or_abort(&err);
     /* FIXME - a failed parse should not leave a partially-allocated p
      * for us to clean up; this could cause callers to leak memory. */
@@ -716,7 +716,7 @@ static void test_visitor_in_errors(TestInputVisitorData 
*data,
     g_free(p);

     v = visitor_input_test_init(data, "[ '1', '2', false, '3' ]");
-    visit_type_strList(v, &q, NULL, &err);
+    visit_type_strList(v, NULL, &q, &err);
     error_free_or_abort(&err);
     assert(q);
     qapi_free_strList(q);
@@ -734,35 +734,35 @@ static void 
test_visitor_in_wrong_type(TestInputVisitorData *data,
     /* Make sure arrays and structs cannot be confused */

     v = visitor_input_test_init(data, "[]");
-    visit_type_TestStruct(v, &p, NULL, &err);
+    visit_type_TestStruct(v, NULL, &p, &err);
     error_free_or_abort(&err);
     g_assert(!p);

     v = visitor_input_test_init(data, "{}");
-    visit_type_strList(v, &q, NULL, &err);
+    visit_type_strList(v, NULL, &q, &err);
     error_free_or_abort(&err);
     assert(!q);

     /* Make sure primitives and struct cannot be confused */

     v = visitor_input_test_init(data, "1");
-    visit_type_TestStruct(v, &p, NULL, &err);
+    visit_type_TestStruct(v, NULL, &p, &err);
     error_free_or_abort(&err);
     g_assert(!p);

     v = visitor_input_test_init(data, "{}");
-    visit_type_int(v, &i, NULL, &err);
+    visit_type_int(v, NULL, &i, &err);
     error_free_or_abort(&err);

     /* Make sure primitives and arrays cannot be confused */

     v = visitor_input_test_init(data, "1");
-    visit_type_strList(v, &q, NULL, &err);
+    visit_type_strList(v, NULL, &q, &err);
     error_free_or_abort(&err);
     assert(!q);

     v = visitor_input_test_init(data, "[]");
-    visit_type_int(v, &i, NULL, &err);
+    visit_type_int(v, NULL, &i, &err);
     error_free_or_abort(&err);
 }

diff --git a/tests/test-qmp-output-visitor.c b/tests/test-qmp-output-visitor.c
index 3078442..4df94bc 100644
--- a/tests/test-qmp-output-visitor.c
+++ b/tests/test-qmp-output-visitor.c
@@ -47,7 +47,7 @@ static void test_visitor_out_int(TestOutputVisitorData *data,
     int64_t value = -42;
     QObject *obj;

-    visit_type_int(data->ov, &value, NULL, &error_abort);
+    visit_type_int(data->ov, NULL, &value, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -63,7 +63,7 @@ static void test_visitor_out_bool(TestOutputVisitorData *data,
     bool value = true;
     QObject *obj;

-    visit_type_bool(data->ov, &value, NULL, &error_abort);
+    visit_type_bool(data->ov, NULL, &value, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -79,7 +79,7 @@ static void test_visitor_out_number(TestOutputVisitorData 
*data,
     double value = 3.14;
     QObject *obj;

-    visit_type_number(data->ov, &value, NULL, &error_abort);
+    visit_type_number(data->ov, NULL, &value, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -95,7 +95,7 @@ static void test_visitor_out_string(TestOutputVisitorData 
*data,
     char *string = (char *) "Q E M U";
     QObject *obj;

-    visit_type_str(data->ov, &string, NULL, &error_abort);
+    visit_type_str(data->ov, NULL, &string, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -112,7 +112,7 @@ static void 
test_visitor_out_no_string(TestOutputVisitorData *data,
     QObject *obj;

     /* A null string should return "" */
-    visit_type_str(data->ov, &string, NULL, &error_abort);
+    visit_type_str(data->ov, NULL, &string, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -129,7 +129,7 @@ static void test_visitor_out_enum(TestOutputVisitorData 
*data,
     EnumOne i;

     for (i = 0; i < ENUM_ONE__MAX; i++) {
-        visit_type_EnumOne(data->ov, &i, "unused", &error_abort);
+        visit_type_EnumOne(data->ov, "unused", &i, &error_abort);

         obj = qmp_output_get_qobject(data->qov);
         g_assert(obj != NULL);
@@ -148,7 +148,7 @@ static void 
test_visitor_out_enum_errors(TestOutputVisitorData *data,

     for (i = 0; i < ARRAY_SIZE(bad_values) ; i++) {
         err = NULL;
-        visit_type_EnumOne(data->ov, &bad_values[i], "unused", &err);
+        visit_type_EnumOne(data->ov, "unused", &bad_values[i], &err);
         g_assert(err);
         error_free(err);
     }
@@ -165,7 +165,7 @@ static void test_visitor_out_struct(TestOutputVisitorData 
*data,
     QObject *obj;
     QDict *qdict;

-    visit_type_TestStruct(data->ov, &p, NULL, &error_abort);
+    visit_type_TestStruct(data->ov, NULL, &p, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -210,7 +210,7 @@ static void 
test_visitor_out_struct_nested(TestOutputVisitorData *data,
     ud2->dict1->dict3->userdef->integer = value;
     ud2->dict1->dict3->string = g_strdup(strings[3]);

-    visit_type_UserDefTwo(data->ov, &ud2, "unused", &error_abort);
+    visit_type_UserDefTwo(data->ov, "unused", &ud2, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -257,7 +257,7 @@ static void 
test_visitor_out_struct_errors(TestOutputVisitorData *data,
         err = NULL;
         u.has_enum1 = true;
         u.enum1 = bad_values[i];
-        visit_type_UserDefOne(data->ov, &pu, "unused", &err);
+        visit_type_UserDefOne(data->ov, "unused", &pu, &err);
         g_assert(err);
         error_free(err);
     }
@@ -289,7 +289,7 @@ static void test_visitor_out_list(TestOutputVisitorData 
*data,
         head = p;
     }

-    visit_type_TestStructList(data->ov, &head, NULL, &error_abort);
+    visit_type_TestStructList(data->ov, NULL, &head, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -356,7 +356,7 @@ static void test_visitor_out_any(TestOutputVisitorData 
*data,
     QObject *obj;

     qobj = QOBJECT(qint_from_int(-42));
-    visit_type_any(data->ov, &qobj, NULL, &error_abort);
+    visit_type_any(data->ov, NULL, &qobj, &error_abort);
     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
     g_assert(qobject_type(obj) == QTYPE_QINT);
@@ -369,7 +369,7 @@ static void test_visitor_out_any(TestOutputVisitorData 
*data,
     qdict_put(qdict, "boolean", qbool_from_bool(true));
     qdict_put(qdict, "string", qstring_from_str("foo"));
     qobj = QOBJECT(qdict);
-    visit_type_any(data->ov, &qobj, NULL, &error_abort);
+    visit_type_any(data->ov, NULL, &qobj, &error_abort);
     qobject_decref(qobj);
     obj = qmp_output_get_qobject(data->qov);
     g_assert(obj != NULL);
@@ -406,7 +406,7 @@ static void 
test_visitor_out_union_flat(TestOutputVisitorData *data,
     tmp->integer = 41;
     tmp->u.value1->boolean = true;

-    visit_type_UserDefFlatUnion(data->ov, &tmp, NULL, &error_abort);
+    visit_type_UserDefFlatUnion(data->ov, NULL, &tmp, &error_abort);
     arg = qmp_output_get_qobject(data->qov);

     g_assert(qobject_type(arg) == QTYPE_QDICT);
@@ -431,7 +431,7 @@ static void 
test_visitor_out_alternate(TestOutputVisitorData *data,
     tmp->type = QTYPE_QINT;
     tmp->u.i = 42;

-    visit_type_UserDefAlternate(data->ov, &tmp, NULL, &error_abort);
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
     arg = qmp_output_get_qobject(data->qov);

     g_assert(qobject_type(arg) == QTYPE_QINT);
@@ -444,7 +444,7 @@ static void 
test_visitor_out_alternate(TestOutputVisitorData *data,
     tmp->type = QTYPE_QSTRING;
     tmp->u.s = g_strdup("hello");

-    visit_type_UserDefAlternate(data->ov, &tmp, NULL, &error_abort);
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
     arg = qmp_output_get_qobject(data->qov);

     g_assert(qobject_type(arg) == QTYPE_QSTRING);
@@ -690,7 +690,7 @@ static void test_native_list(TestOutputVisitorData *data,
     cvalue->type = kind;
     init_native_list(cvalue);

-    visit_type_UserDefNativeListUnion(data->ov, &cvalue, NULL, &error_abort);
+    visit_type_UserDefNativeListUnion(data->ov, NULL, &cvalue, &error_abort);

     obj = qmp_output_get_qobject(data->qov);
     check_native_list(obj, cvalue->type);
diff --git a/tests/test-string-input-visitor.c 
b/tests/test-string-input-visitor.c
index 8e3433e..d99498d 100644
--- a/tests/test-string-input-visitor.c
+++ b/tests/test-string-input-visitor.c
@@ -59,7 +59,7 @@ static void test_visitor_in_int(TestInputVisitorData *data,

     v = visitor_input_test_init(data, "-42");

-    visit_type_int(v, &res, NULL, &err);
+    visit_type_int(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, value);
 }
@@ -74,7 +74,7 @@ static void test_visitor_in_intList(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, "1,2,0,2-4,20,5-9,1-8");

-    visit_type_int16List(v, &res, NULL, &error_abort);
+    visit_type_int16List(v, NULL, &res, &error_abort);
     tmp = res;
     while (i < sizeof(value) / sizeof(value[0])) {
         g_assert(tmp);
@@ -100,42 +100,42 @@ static void test_visitor_in_bool(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, "true");

-    visit_type_bool(v, &res, NULL, &err);
+    visit_type_bool(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, true);
     visitor_input_teardown(data, unused);

     v = visitor_input_test_init(data, "yes");

-    visit_type_bool(v, &res, NULL, &err);
+    visit_type_bool(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, true);
     visitor_input_teardown(data, unused);

     v = visitor_input_test_init(data, "on");

-    visit_type_bool(v, &res, NULL, &err);
+    visit_type_bool(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, true);
     visitor_input_teardown(data, unused);

     v = visitor_input_test_init(data, "false");

-    visit_type_bool(v, &res, NULL, &err);
+    visit_type_bool(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, false);
     visitor_input_teardown(data, unused);

     v = visitor_input_test_init(data, "no");

-    visit_type_bool(v, &res, NULL, &err);
+    visit_type_bool(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, false);
     visitor_input_teardown(data, unused);

     v = visitor_input_test_init(data, "off");

-    visit_type_bool(v, &res, NULL, &err);
+    visit_type_bool(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, false);
 }
@@ -149,7 +149,7 @@ static void test_visitor_in_number(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, "3.14");

-    visit_type_number(v, &res, NULL, &err);
+    visit_type_number(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpfloat(res, ==, value);
 }
@@ -163,7 +163,7 @@ static void test_visitor_in_string(TestInputVisitorData 
*data,

     v = visitor_input_test_init(data, value);

-    visit_type_str(v, &res, NULL, &err);
+    visit_type_str(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpstr(res, ==, value);

@@ -182,7 +182,7 @@ static void test_visitor_in_enum(TestInputVisitorData *data,

         v = visitor_input_test_init(data, EnumOne_lookup[i]);

-        visit_type_EnumOne(v, &res, NULL, &err);
+        visit_type_EnumOne(v, NULL, &res, &err);
         g_assert(!err);
         g_assert_cmpint(i, ==, res);

@@ -220,29 +220,29 @@ static void test_visitor_in_fuzz(TestInputVisitorData 
*data,
         }

         v = visitor_input_test_init(data, buf);
-        visit_type_int(v, &ires, NULL, NULL);
+        visit_type_int(v, NULL, &ires, NULL);
         visitor_input_teardown(data, NULL);

         v = visitor_input_test_init(data, buf);
-        visit_type_intList(v, &ilres, NULL, NULL);
+        visit_type_intList(v, NULL, &ilres, NULL);
         visitor_input_teardown(data, NULL);

         v = visitor_input_test_init(data, buf);
-        visit_type_bool(v, &bres, NULL, NULL);
+        visit_type_bool(v, NULL, &bres, NULL);
         visitor_input_teardown(data, NULL);

         v = visitor_input_test_init(data, buf);
-        visit_type_number(v, &nres, NULL, NULL);
+        visit_type_number(v, NULL, &nres, NULL);
         visitor_input_teardown(data, NULL);

         v = visitor_input_test_init(data, buf);
         sres = NULL;
-        visit_type_str(v, &sres, NULL, NULL);
+        visit_type_str(v, NULL, &sres, NULL);
         g_free(sres);
         visitor_input_teardown(data, NULL);

         v = visitor_input_test_init(data, buf);
-        visit_type_EnumOne(v, &eres, NULL, NULL);
+        visit_type_EnumOne(v, NULL, &eres, NULL);
         visitor_input_teardown(data, NULL);
     }
 }
diff --git a/tests/test-string-output-visitor.c 
b/tests/test-string-output-visitor.c
index 9585252..a26a9ad 100644
--- a/tests/test-string-output-visitor.c
+++ b/tests/test-string-output-visitor.c
@@ -61,7 +61,7 @@ static void test_visitor_out_int(TestOutputVisitorData *data,
     Error *err = NULL;
     char *str;

-    visit_type_int(data->ov, &value, NULL, &err);
+    visit_type_int(data->ov, NULL, &value, &err);
     g_assert(!err);

     str = string_output_get_string(data->sov);
@@ -90,7 +90,7 @@ static void test_visitor_out_intList(TestOutputVisitorData 
*data,
         tmp = &(*tmp)->next;
     }

-    visit_type_intList(data->ov, &list, NULL, &errp);
+    visit_type_intList(data->ov, NULL, &list, &errp);
     g_assert(errp == NULL);

     str = string_output_get_string(data->sov);
@@ -120,7 +120,7 @@ static void test_visitor_out_bool(TestOutputVisitorData 
*data,
     bool value = true;
     char *str;

-    visit_type_bool(data->ov, &value, NULL, &err);
+    visit_type_bool(data->ov, NULL, &value, &err);
     g_assert(!err);

     str = string_output_get_string(data->sov);
@@ -136,7 +136,7 @@ static void test_visitor_out_number(TestOutputVisitorData 
*data,
     Error *err = NULL;
     char *str;

-    visit_type_number(data->ov, &value, NULL, &err);
+    visit_type_number(data->ov, NULL, &value, &err);
     g_assert(!err);

     str = string_output_get_string(data->sov);
@@ -153,7 +153,7 @@ static void test_visitor_out_string(TestOutputVisitorData 
*data,
     Error *err = NULL;
     char *str;

-    visit_type_str(data->ov, &string, NULL, &err);
+    visit_type_str(data->ov, NULL, &string, &err);
     g_assert(!err);

     str = string_output_get_string(data->sov);
@@ -174,7 +174,7 @@ static void 
test_visitor_out_no_string(TestOutputVisitorData *data,
     char *str;

     /* A null string should return "" */
-    visit_type_str(data->ov, &string, NULL, &err);
+    visit_type_str(data->ov, NULL, &string, &err);
     g_assert(!err);

     str = string_output_get_string(data->sov);
@@ -197,7 +197,7 @@ static void test_visitor_out_enum(TestOutputVisitorData 
*data,
     for (i = 0; i < ENUM_ONE__MAX; i++) {
         char *str_human;

-        visit_type_EnumOne(data->ov, &i, "unused", &err);
+        visit_type_EnumOne(data->ov, "unused", &i, &err);
         g_assert(!err);

         str_human = g_strdup_printf("\"%s\"", EnumOne_lookup[i]);
@@ -222,7 +222,7 @@ static void 
test_visitor_out_enum_errors(TestOutputVisitorData *data,

     for (i = 0; i < ARRAY_SIZE(bad_values) ; i++) {
         err = NULL;
-        visit_type_EnumOne(data->ov, &bad_values[i], "unused", &err);
+        visit_type_EnumOne(data->ov, "unused", &bad_values[i], &err);
         g_assert(err);
         error_free(err);
     }
diff --git a/tests/test-visitor-serialization.c 
b/tests/test-visitor-serialization.c
index 9f67f9e..f74a6df 100644
--- a/tests/test-visitor-serialization.c
+++ b/tests/test-visitor-serialization.c
@@ -101,40 +101,40 @@ static void visit_primitive_type(Visitor *v, void 
**native, Error **errp)
     PrimitiveType *pt = *native;
     switch(pt->type) {
     case PTYPE_STRING:
-        visit_type_str(v, (char **)&pt->value.string, NULL, errp);
+        visit_type_str(v, NULL, (char **)&pt->value.string, errp);
         break;
     case PTYPE_BOOLEAN:
-        visit_type_bool(v, &pt->value.boolean, NULL, errp);
+        visit_type_bool(v, NULL, &pt->value.boolean, errp);
         break;
     case PTYPE_NUMBER:
-        visit_type_number(v, &pt->value.number, NULL, errp);
+        visit_type_number(v, NULL, &pt->value.number, errp);
         break;
     case PTYPE_INTEGER:
-        visit_type_int(v, &pt->value.integer, NULL, errp);
+        visit_type_int(v, NULL, &pt->value.integer, errp);
         break;
     case PTYPE_U8:
-        visit_type_uint8(v, &pt->value.u8, NULL, errp);
+        visit_type_uint8(v, NULL, &pt->value.u8, errp);
         break;
     case PTYPE_U16:
-        visit_type_uint16(v, &pt->value.u16, NULL, errp);
+        visit_type_uint16(v, NULL, &pt->value.u16, errp);
         break;
     case PTYPE_U32:
-        visit_type_uint32(v, &pt->value.u32, NULL, errp);
+        visit_type_uint32(v, NULL, &pt->value.u32, errp);
         break;
     case PTYPE_U64:
-        visit_type_uint64(v, &pt->value.u64, NULL, errp);
+        visit_type_uint64(v, NULL, &pt->value.u64, errp);
         break;
     case PTYPE_S8:
-        visit_type_int8(v, &pt->value.s8, NULL, errp);
+        visit_type_int8(v, NULL, &pt->value.s8, errp);
         break;
     case PTYPE_S16:
-        visit_type_int16(v, &pt->value.s16, NULL, errp);
+        visit_type_int16(v, NULL, &pt->value.s16, errp);
         break;
     case PTYPE_S32:
-        visit_type_int32(v, &pt->value.s32, NULL, errp);
+        visit_type_int32(v, NULL, &pt->value.s32, errp);
         break;
     case PTYPE_S64:
-        visit_type_int64(v, &pt->value.s64, NULL, errp);
+        visit_type_int64(v, NULL, &pt->value.s64, errp);
         break;
     case PTYPE_EOL:
         g_assert_not_reached();
@@ -146,40 +146,40 @@ static void visit_primitive_list(Visitor *v, void 
**native, Error **errp)
     PrimitiveList *pl = *native;
     switch (pl->type) {
     case PTYPE_STRING:
-        visit_type_strList(v, &pl->value.strings, NULL, errp);
+        visit_type_strList(v, NULL, &pl->value.strings, errp);
         break;
     case PTYPE_BOOLEAN:
-        visit_type_boolList(v, &pl->value.booleans, NULL, errp);
+        visit_type_boolList(v, NULL, &pl->value.booleans, errp);
         break;
     case PTYPE_NUMBER:
-        visit_type_numberList(v, &pl->value.numbers, NULL, errp);
+        visit_type_numberList(v, NULL, &pl->value.numbers, errp);
         break;
     case PTYPE_INTEGER:
-        visit_type_intList(v, &pl->value.integers, NULL, errp);
+        visit_type_intList(v, NULL, &pl->value.integers, errp);
         break;
     case PTYPE_S8:
-        visit_type_int8List(v, &pl->value.s8_integers, NULL, errp);
+        visit_type_int8List(v, NULL, &pl->value.s8_integers, errp);
         break;
     case PTYPE_S16:
-        visit_type_int16List(v, &pl->value.s16_integers, NULL, errp);
+        visit_type_int16List(v, NULL, &pl->value.s16_integers, errp);
         break;
     case PTYPE_S32:
-        visit_type_int32List(v, &pl->value.s32_integers, NULL, errp);
+        visit_type_int32List(v, NULL, &pl->value.s32_integers, errp);
         break;
     case PTYPE_S64:
-        visit_type_int64List(v, &pl->value.s64_integers, NULL, errp);
+        visit_type_int64List(v, NULL, &pl->value.s64_integers, errp);
         break;
     case PTYPE_U8:
-        visit_type_uint8List(v, &pl->value.u8_integers, NULL, errp);
+        visit_type_uint8List(v, NULL, &pl->value.u8_integers, errp);
         break;
     case PTYPE_U16:
-        visit_type_uint16List(v, &pl->value.u16_integers, NULL, errp);
+        visit_type_uint16List(v, NULL, &pl->value.u16_integers, errp);
         break;
     case PTYPE_U32:
-        visit_type_uint32List(v, &pl->value.u32_integers, NULL, errp);
+        visit_type_uint32List(v, NULL, &pl->value.u32_integers, errp);
         break;
     case PTYPE_U64:
-        visit_type_uint64List(v, &pl->value.u64_integers, NULL, errp);
+        visit_type_uint64List(v, NULL, &pl->value.u64_integers, errp);
         break;
     default:
         g_assert_not_reached();
@@ -213,7 +213,7 @@ static void struct_cleanup(TestStruct *ts)

 static void visit_struct(Visitor *v, void **native, Error **errp)
 {
-    visit_type_TestStruct(v, (TestStruct **)native, NULL, errp);
+    visit_type_TestStruct(v, NULL, (TestStruct **)native, errp);
 }

 static UserDefTwo *nested_struct_create(void)
@@ -264,12 +264,12 @@ static void nested_struct_cleanup(UserDefTwo *udnp)

 static void visit_nested_struct(Visitor *v, void **native, Error **errp)
 {
-    visit_type_UserDefTwo(v, (UserDefTwo **)native, NULL, errp);
+    visit_type_UserDefTwo(v, NULL, (UserDefTwo **)native, errp);
 }

 static void visit_nested_struct_list(Visitor *v, void **native, Error **errp)
 {
-    visit_type_UserDefTwoList(v, (UserDefTwoList **)native, NULL, errp);
+    visit_type_UserDefTwoList(v, NULL, (UserDefTwoList **)native, errp);
 }

 /* test cases */
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
index 922efb3..96b7ae7 100644
--- a/util/qemu-sockets.c
+++ b/util/qemu-sockets.c
@@ -1152,7 +1152,7 @@ void qapi_copy_SocketAddress(SocketAddress **p_dest,

     qov = qmp_output_visitor_new();
     ov = qmp_output_get_visitor(qov);
-    visit_type_SocketAddress(ov, &src, NULL, &error_abort);
+    visit_type_SocketAddress(ov, NULL, &src, &error_abort);
     obj = qmp_output_get_qobject(qov);
     qmp_output_visitor_cleanup(qov);
     if (!obj) {
@@ -1161,7 +1161,7 @@ void qapi_copy_SocketAddress(SocketAddress **p_dest,

     qiv = qmp_input_visitor_new(obj);
     iv = qmp_input_get_visitor(qiv);
-    visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
+    visit_type_SocketAddress(iv, NULL, p_dest, &error_abort);
     qmp_input_visitor_cleanup(qiv);
     qobject_decref(obj);
 }
diff --git a/vl.c b/vl.c
index 11555ac..7689661 100644
--- a/vl.c
+++ b/vl.c
@@ -2846,7 +2846,7 @@ static int object_create(void *opaque, QemuOpts *opts, 
Error **errp)
     }

     qdict_del(pdict, "qom-type");
-    visit_type_str(v, &type, "qom-type", &err);
+    visit_type_str(v, "qom-type", &type, &err);
     if (err) {
         goto out;
     }
@@ -2856,7 +2856,7 @@ static int object_create(void *opaque, QemuOpts *opts, 
Error **errp)
     }

     qdict_del(pdict, "id");
-    visit_type_str(v, &id, "id", &err);
+    visit_type_str(v, "id", &id, &err);
     if (err) {
         goto out_end;
     }
-- 
2.4.3




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