diff options
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 36b9577c8d..4678e21c4c 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -668,6 +668,22 @@ static inline int cast_size_t_to_int(size_t a) return (int)a; } +static inline uint64_t u64_mult(uint64_t a, uint64_t b) +{ + if (unsigned_mult_overflows(a, b)) + die("uint64_t overflow: %"PRIuMAX" * %"PRIuMAX, + (uintmax_t)a, (uintmax_t)b); + return a * b; +} + +static inline uint64_t u64_add(uint64_t a, uint64_t b) +{ + if (unsigned_add_overflows(a, b)) + die("uint64_t overflow: %"PRIuMAX" + %"PRIuMAX, + (uintmax_t)a, (uintmax_t)b); + return a + b; +} + /* * Limit size of IO chunks, because huge chunks only cause pain. OS X * 64-bit is buggy, returning EINVAL if len >= INT_MAX; and even in |