Author: kevlo
Date: Fri Aug 17 01:05:56 2012
New Revision: 239345
URL: http://svn.freebsd.org/changeset/base/239345
Log:
Make 'junk' volatile so that compilers won't be tempted to optimize
Reviewed by: ache
MFC after: 3 days
Modified:
head/lib/libc/stdlib/random.c
Modified: head/lib/libc/stdlib/random.c
==============================================================================
--- head/lib/libc/stdlib/random.c Fri Aug 17 00:49:29 2012
(r239344)
+++ head/lib/libc/stdlib/random.c Fri Aug 17 01:05:56 2012
(r239345)
@@ -315,7 +315,7 @@ srandomdev()
if (!done) {
struct timeval tv;
- unsigned long junk;
+ volatile unsigned long junk;
gettimeofday(&tv, NULL);
srandom((getpid() << 16) ^ tv.tv_sec ^ tv.tv_usec ^ junk);
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