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branch core-updates updated: gnu: ocaml-4.09: Fix signal handling with n
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guix-commits |
Subject: |
branch core-updates updated: gnu: ocaml-4.09: Fix signal handling with newer glibc. |
Date: |
Sun, 19 Feb 2023 04:13:41 -0500 |
This is an automated email from the git hooks/post-receive script.
roptat pushed a commit to branch core-updates
in repository guix.
The following commit(s) were added to refs/heads/core-updates by this push:
new 15bce0144b gnu: ocaml-4.09: Fix signal handling with newer glibc.
15bce0144b is described below
commit 15bce0144bb61a156b975c2d97d3edc4bcc3e68c
Author: Julien Lepiller <julien@lepiller.eu>
AuthorDate: Sun Feb 19 10:06:36 2023 +0100
gnu: ocaml-4.09: Fix signal handling with newer glibc.
* gnu/packages/patches/ocaml-4.09-dynamically-allocate-signal-stack.patch:
New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/ocaml.scm (ocaml-4.09): Use it.
---
gnu/local.mk | 1 +
gnu/packages/ocaml.scm | 4 +-
...ml-4.09-dynamically-allocate-signal-stack.patch | 52 ++++++++++++++++++++++
3 files changed, 56 insertions(+), 1 deletion(-)
diff --git a/gnu/local.mk b/gnu/local.mk
index 5bd564afff..c52bcb3ecc 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1580,6 +1580,7 @@ dist_patch_DATA =
\
%D%/packages/patches/ocaml-dose3-dont-make-printconf.patch \
%D%/packages/patches/ocaml-dose3-Install-mli-cmx-etc.patch \
%D%/packages/patches/ocaml-multiple-definitions.patch \
+ %D%/packages/patches/ocaml-4.09-dynamically-allocate-signal-stack.patch
\
%D%/packages/patches/ocaml-4.09-multiple-definitions.patch \
%D%/packages/patches/omake-fix-non-determinism.patch \
%D%/packages/patches/oneko-remove-nonfree-characters.patch \
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 3458c87818..1487ed9337 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -316,7 +316,9 @@ functional, imperative and object-oriented styles of
programming.")
"http://caml.inria.fr/pub/distrib/ocaml-"
(version-major+minor version)
"/ocaml-" version ".tar.xz"))
- (patches (search-patches
"ocaml-4.09-multiple-definitions.patch"))
+ (patches (search-patches
+ "ocaml-4.09-multiple-definitions.patch"
+ "ocaml-4.09-dynamically-allocate-signal-stack.patch"))
(sha256
(base32
"1v3z5ar326f3hzvpfljg4xj8b9lmbrl53fn57yih1bkbx3gr3yzj"))))
diff --git
a/gnu/packages/patches/ocaml-4.09-dynamically-allocate-signal-stack.patch
b/gnu/packages/patches/ocaml-4.09-dynamically-allocate-signal-stack.patch
new file mode 100644
index 0000000000..2af1582976
--- /dev/null
+++ b/gnu/packages/patches/ocaml-4.09-dynamically-allocate-signal-stack.patch
@@ -0,0 +1,52 @@
+From 95f5016955e519c392c746e38e0c9460f2c1aa0c Mon Sep 17 00:00:00 2001
+From: Julien Lepiller <julien@lepiller.eu>
+Date: Sun, 19 Feb 2023 09:58:57 +0100
+Subject: [PATCH] Dynamically allocate the alternate signal stack.
+
+This patch is a backport of https://github.com/ocaml/ocaml/pull/10266.
+---
+ runtime/signals_nat.c | 19 +++++++++++--------
+ 1 file changed, 11 insertions(+), 8 deletions(-)
+
+diff --git a/runtime/signals_nat.c b/runtime/signals_nat.c
+index 29a5f49..a193fc2 100644
+--- a/runtime/signals_nat.c
++++ b/runtime/signals_nat.c
+@@ -182,7 +182,6 @@ DECLARE_SIGNAL_HANDLER(trap_handler)
+ #ifdef HAS_STACK_OVERFLOW_DETECTION
+
+ static char * system_stack_top;
+-static char sig_alt_stack[SIGSTKSZ];
+
+ #if defined(SYS_linux)
+ /* PR#4746: recent Linux kernels with support for stack randomization
+@@ -274,15 +273,19 @@ void caml_init_signals(void)
+ #ifdef HAS_STACK_OVERFLOW_DETECTION
+ {
+ stack_t stk;
+- struct sigaction act;
+- stk.ss_sp = sig_alt_stack;
++ stk.ss_sp = malloc(SIGSTKSZ);
+ stk.ss_size = SIGSTKSZ;
+ stk.ss_flags = 0;
+- SET_SIGACT(act, segv_handler);
+- act.sa_flags |= SA_ONSTACK | SA_NODEFER;
+- sigemptyset(&act.sa_mask);
+- system_stack_top = (char *) &act;
+- if (sigaltstack(&stk, NULL) == 0) { sigaction(SIGSEGV, &act, NULL); }
++ if (stk.ss_sp != NULL) {
++ if (sigaltstack(&stk, NULL) != -1) {
++ struct sigaction act;
++ SET_SIGACT(act, segv_handler);
++ act.sa_flags |= SA_ONSTACK | SA_NODEFER;
++ sigemptyset(&act.sa_mask);
++ system_stack_top = (char *) &act;
++ sigaction(SIGSEGV, &act, NULL);
++ }
++ }
+ }
+ #endif
+ }
+--
+2.38.1
+
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