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[Qemu-devel] [PATCH] crypto/block: Fix build with gcc 9
From: |
Greg Kurz |
Subject: |
[Qemu-devel] [PATCH] crypto/block: Fix build with gcc 9 |
Date: |
Thu, 28 Feb 2019 16:06:06 +0100 |
User-agent: |
StGit/unknown-version |
Build fails with gcc 9:
crypto/block-luks.c:689:18: error: taking address of packed member of ‘struct
QCryptoBlockLUKSHeader’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
689 | be32_to_cpus(&luks->header.payload_offset);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/block-luks.c:690:18: error: taking address of packed member of ‘struct
QCryptoBlockLUKSHeader’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
690 | be32_to_cpus(&luks->header.key_bytes);
| ^~~~~~~~~~~~~~~~~~~~~~~
crypto/block-luks.c:691:18: error: taking address of packed member of ‘struct
QCryptoBlockLUKSHeader’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
691 | be32_to_cpus(&luks->header.master_key_iterations);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
... a bunch of similar errors...
crypto/block-luks.c:1288:22: error: taking address of packed member of ‘struct
QCryptoBlockLUKSKeySlot’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
1288 | be32_to_cpus(&luks->header.key_slots[i].stripes);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
All members of the QCryptoBlockLUKSKeySlot and QCryptoBlockLUKSHeader are
naturally aligned and we already check at build time there isn't any
unwanted padding. Drop the QEMU_PACKED attribute.
Signed-off-by: Greg Kurz <address@hidden>
---
crypto/block-luks.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/crypto/block-luks.c b/crypto/block-luks.c
index 6bac79c3ab6b..5a69b3ce74d3 100644
--- a/crypto/block-luks.c
+++ b/crypto/block-luks.c
@@ -146,7 +146,7 @@ struct QCryptoBlockLUKSKeySlot {
uint32_t key_offset;
/* number of anti-forensic stripes */
uint32_t stripes;
-} QEMU_PACKED;
+};
QEMU_BUILD_BUG_ON(sizeof(struct QCryptoBlockLUKSKeySlot) != 48);
@@ -191,7 +191,7 @@ struct QCryptoBlockLUKSHeader {
/* key slots */
QCryptoBlockLUKSKeySlot key_slots[QCRYPTO_BLOCK_LUKS_NUM_KEY_SLOTS];
-} QEMU_PACKED;
+};
QEMU_BUILD_BUG_ON(sizeof(struct QCryptoBlockLUKSHeader) != 592);
- [Qemu-devel] [PATCH] crypto/block: Fix build with gcc 9,
Greg Kurz <=