On Sat, Jul 14, 2012 at 12:50 PM, Jonathan Nieder <jrnieder@xxxxxxxxx> wrote: > After the patch, what reason does gcc have to expect that 'block' is > 32-bit aligned except when it is? The code (including the code I > didn't touch) never casts from char * to int * except in get/put_be32 > on arches that don't mind unaligned accesses. Ahh. I was looking at the cast you added: blk_SHA1_Block(ctx, (const unsigned char *) ctx->W); but I guess that if gcc inlines that and sees the original int type, it doesn't matter, because that *is* aligned. So it's ok, but please just make blk_SHA1_Block() take a "const void *" instead and that cast can go away. Linus -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html