chance: Avoid abuse of O_NONBLOCK for Windows

[empserver] / src / lib / gen / chance.c

diff --git a/src/lib/gen/chance.c b/src/lib/gen/chance.c
index c415c0854257f294768c236940c77a3c36fd6e9b..35ed982452627138547a0bf70be616a0693d8240 100644 (file)
--- a/src/lib/gen/chance.c
+++ b/src/lib/gen/chance.c
@@ -27,7 +27,7 @@
  *  chance.c: Roll dice
  *
  *  Known contributors to this file:
- *     Markus Armbruster, 2006-2012
+ *     Markus Armbruster, 2006-2021
  */
 
 #include <config.h>
@@ -140,11 +140,12 @@ djb_hash(unsigned hash, void *buf, size_t sz)
 unsigned
 pick_seed(void)
 {
-    int fd;
     unsigned seed;
     int got_seed = 0;
     struct timeval tv;
     pid_t pid;
+#ifndef _WIN32
+    int fd;
 
     /*
      * Modern systems provide random number devices, but the details
@@ -164,6 +165,7 @@ pick_seed(void)
        got_seed = read(fd, &seed, sizeof(seed)) == sizeof(seed);
        close(fd);
     }
+#endif
 
     if (!got_seed) {
        /* Kernel didn't provide, fall back to hashing time and PID */