[Bug target/53016] memcpy optimization can cause unaligned access on ARM

[jquesnelle at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53016

--- Comment #6 from Jeffrey Quesnelle <jquesnelle at gmail dot com> 2012-04-17 
17:08:22 UTC ---
Hmm, even explicit casts to new void*/char* types doesn't fix it:

const child_t * child3 = (const child_t*)( (const char*)(parentptr) + 4 + size
+ size);
const void* src = (const void*)child3;
void* dest = (void*)&parent.children[2];
memcpy(dest,src,size);

const child_t * child3 = (const child_t*)( (const char*)(parentptr) + 4 + size
+ size);
const unsigned char* src = (const unsigned char*)child3;
unsigned char* dest = (unsigned char*)&parent.children[2];
memcpy(dest,src,size);

Both of these still cause the alignment fault.