https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108695
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I am 99% sure there is aliasing violations in this code too:
#if _MSC_VER
#define GETU32(p) SWAP(*((u32 *)(p)))
#define PUTU32(ct, st) \
{ \
*((u32 *)(ct)) = SWAP((st)); \
}
#else /* _MSC_VER */
# if __BYTE_ORDER == __BIG_ENDIAN
#define GETU32(p) *((u32*)(p))
#define PUTU32(ct, st) *((u32*)(ct)) = (st)
#else /* BIG_ENDIAN */
#if 0 //def HAVE_LINUX_SWAB_H
#define GETU32(p) __swab32(*((u32*)(p)))
#define PUTU32(ct, st) *((u32*)(ct)) = __swab32((st))
#else /* __GNUC__ */
#include <netinet/in.h>
#define GETU32(p) ntohl(*((u32*)(p)))
#define PUTU32(ct, st) *((u32*)(ct)) = htonl((st))
#endif /* __GNUC__ */
#endif /* BIG_ENDIAN */
#endif /*_MSC_VER */
#if 0
#define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ ((u32)(pt)[2]
<< 8) ^ ((u32)(pt)[3]))
#define PUTU32(ct, st) \
{ \
(ct)[0] = (u8)((st) >> 24); \
(ct)[1] = (u8)((st) >> 16); \
(ct)[2] = (u8)((st) >> 8); \
(ct)[3] = (u8)(st); \
}
#endif
A few other places too ...
