the function returns. Upon failure, it returns NULL. */
#if HAVE_ALLOCA
# define malloca(N) \
- ((N) < 4032 - sa_increment \
- ? (void *) ((char *) alloca ((N) + sa_increment) + sa_increment) \
+ ((N) < 4032 - (2 * sa_alignment_max - 1) \
+ ? (void *) (((uintptr_t) (char *) alloca ((N) + 2 * sa_alignment_max - 1) \
+ + (2 * sa_alignment_max - 1)) \
+ & ~(uintptr_t)(2 * sa_alignment_max - 1)) \
: mmalloca (N))
#else
# define malloca(N) \
| (sa_alignment_longlong - 1)
#endif
| (sa_alignment_longdouble - 1)
- ) + 1,
-/* The increment that guarantees room for a magic word must be >= sizeof (int)
- and a multiple of sa_alignment_max. */
- sa_increment = ((sizeof (int) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max
+ ) + 1
};
#endif /* _MALLOCA_H */