commit 7973c87ef4efa12816a3b5a1e170653712a98c16
Author: Sylvain Munaut <s.munaut@whatever-company.com>
Date:   Wed Nov 7 17:39:35 2012 +0100

    rgw: Use re-entrant gmtime_r instead of gmtime in dump_last_modified
    
    Signed-off-by: Sylvain Munaut <s.munaut@whatever-company.com>

diff --git a/src/rgw/rgw_rest.cc b/src/rgw/rgw_rest.cc
index fb55f34..9d7051b 100644
--- a/src/rgw/rgw_rest.cc
+++ b/src/rgw/rgw_rest.cc
@@ -160,7 +160,8 @@ void dump_last_modified(struct req_state *s, time_t t)
 {
 
   char timestr[TIME_BUF_SIZE];
-  struct tm *tmp = gmtime(&t);
+  struct tm result;
+  struct tm *tmp = gmtime_r(&t, &result);
   if (tmp == NULL)
     return;