X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ftempname.c;h=5ead95ea3cc087634ab5b6907e1372de02ee61a6;hb=e6d6498c6caf7642510024fefbf64e9d477b19cf;hp=d008c982fd8f1899d54bed08605f862e8fd163bd;hpb=0fdb952b01eff6a77e6726b854a2d02854026f0a;p=gnulib.git

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)