From 1f5e81f8f83087082108cf9449068ec4c2a3125e Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Thu, 27 Jun 2013 01:03:19 +0200 Subject: md5/sha512: a better fix for strict aliasing warnings The locations *are* well-aligned for direct stores on any architecture. Signed-off-by: Denys Vlasenko --- libbb/hash_md5_sha.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'libbb/hash_md5_sha.c') diff --git a/libbb/hash_md5_sha.c b/libbb/hash_md5_sha.c index e10cb391d..3f743ac75 100644 --- a/libbb/hash_md5_sha.c +++ b/libbb/hash_md5_sha.c @@ -84,7 +84,7 @@ static void FAST_FUNC common64_end(md5_ctx_t *ctx, int swap_needed) if (swap_needed) t = bb_bswap_64(t); /* wbuffer is suitably aligned for this */ - memcpy(&ctx->wbuffer[64 - 8], &t, sizeof(t)); + *(bb__aliased_uint64_t *) (&ctx->wbuffer[64 - 8]) = t; } ctx->process_block(ctx); if (remaining >= 8) @@ -883,10 +883,10 @@ void FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf) uint64_t t; t = ctx->total64[0] << 3; t = SWAP_BE64(t); - memcpy(&ctx->wbuffer[128 - 8], &t, sizeof(t)); + *(bb__aliased_uint64_t *) (&ctx->wbuffer[128 - 8]) = t; t = (ctx->total64[1] << 3) | (ctx->total64[0] >> 61); t = SWAP_BE64(t); - memcpy(&ctx->wbuffer[128 - 16], &t, sizeof(t)); + *(bb__aliased_uint64_t *) (&ctx->wbuffer[128 - 16]) = t; } sha512_process_block128(ctx); if (remaining >= 16) -- cgit v1.2.3