Oliver Schneider <oliver@xxxxxxxxxx> writes: > Here the macros. As I mentioned before, the behavior differs between > little and big Endian platforms. x64 is a little Endian platform, though. > > /* Little Endian */ > #define LEND32(X) (uint32_t)(X) > #define PUT32(X,Y) (*(uint32_t*)(X)) = LEND32(Y) > #define GET32(X) (*(uint32_t*)(X)) That is indeed an aliasing violation. However, since you are using -fno-strict-aliasing I guess that is not the problem in itself. From your earlier description, gcc is somehow deciding that the alignment is greater than it really is. I don't know what would cause that. My guess would some combination of inlining with the type casting in the macros. Ian
