diff options
| -rw-r--r-- | src/atomic_ops_malloc.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/atomic_ops_malloc.c b/src/atomic_ops_malloc.c index 7178f49..6d4d81a 100644 --- a/src/atomic_ops_malloc.c +++ b/src/atomic_ops_malloc.c @@ -135,9 +135,19 @@ static char *get_mmaped(size_t sz) return result; } +#ifndef SIZE_MAX +# include <limits.h> +#endif +#ifdef SIZE_MAX +# define AO_SIZE_MAX SIZE_MAX +#else +# define AO_SIZE_MAX (~(size_t)0) +#endif + /* Saturated addition of size_t values. Used to avoid value wrap */ /* around on overflow. The arguments should have no side effects. */ -#define SIZET_SAT_ADD(a, b) ((a) < ~(size_t)(b) ? (a) + (b) : ~(size_t)0) +#define SIZET_SAT_ADD(a, b) \ + ((a) < AO_SIZE_MAX - (b) ? (a) + (b) : AO_SIZE_MAX) /* Allocate an object of size (incl. header) of size > CHUNK_SIZE. */ /* sz includes space for an AO_t-sized header. */ |