From: Jan-Simon Möller <dl9pf@xxxxxx> The use of variable length arrays in structs (VLAIS) in the Linux Kernel code precludes the use of compilers which don't implement VLAIS (for instance the Clang compiler). This patch instead allocates the appropriate amount of memory using an char array. Patch from series at http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html by PaX Team. Signed-off-by: Jan-Simon Möller <dl9pf@xxxxxx> Cc: pageexec@xxxxxxxxxxx Signed-off-by: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx> --- crypto/testmgr.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 941d75c..5b7b3a6 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -1578,16 +1578,19 @@ static int alg_test_crc32c(const struct alg_test_desc *desc, } do { - struct { - struct shash_desc shash; - char ctx[crypto_shash_descsize(tfm)]; - } sdesc; - - sdesc.shash.tfm = tfm; - sdesc.shash.flags = 0; - - *(u32 *)sdesc.ctx = le32_to_cpu(420553207); - err = crypto_shash_final(&sdesc.shash, (u8 *)&val); + char sdesc[sizeof(struct shash_desc) + + crypto_shash_descsize(tfm) + + CRYPTO_MINALIGN] CRYPTO_MINALIGN_ATTR; + struct shash_desc *shash = (struct shash_desc *)sdesc; + u32 *ctx = (u32 *)((unsigned long)(sdesc + + sizeof(struct shash_desc) + CRYPTO_MINALIGN - 1) + & ~(CRYPTO_MINALIGN - 1)); + + shash->tfm = tfm; + shash->flags = 0; + + *ctx = le32_to_cpu(420553207); + err = crypto_shash_final(shash, (u8 *)&val); if (err) { printk(KERN_ERR "alg: crc32c: Operation failed for " "%s: %d\n", driver, err); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
