diff options
Diffstat (limited to 'lib/tempname.c')
| -rw-r--r-- | lib/tempname.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/tempname.c b/lib/tempname.c index d008c982f..5ead95ea3 100644 --- a/lib/tempname.c +++ b/lib/tempname.c @@ -107,6 +107,15 @@ # define __secure_getenv getenv #endif +/* Use the widest available unsigned type if uint64_t is not + available. The algorithm below extracts a number less than 62**6 + (approximately 2**35.725) from uint64_t, so ancient hosts where + uintmax_t is only 32 bits lose about 3.725 bits of randomness, + which is better than not having mkstemp at all. */ +#if !defined UINT64_MAX && !defined uint64_t +# define uint64_t uintmax_t +#endif + /* Return nonzero if DIR is an existent directory. */ static int direxists (const char *dir) |