X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=miscutil.c;h=10ff9ead4f58c2cd7d519964c46bf16b1ba9a2e4;hp=f5e647caf377292e65e46bef4b38f14ee423b5c5;hb=3c38ebf41d3a480c3c140eb9513d11e7f7b7fe3c;hpb=d2170158936d131cf7ec7ce95795d6347ceb93f9

diff --git a/miscutil.c b/miscutil.c
index f5e647ca..10ff9ead 100644
--- a/miscutil.c
+++ b/miscutil.c
@@ -1,4 +1,4 @@
-const char miscutil_rcs[] = "$Id: miscutil.c,v 1.80 2016/01/16 12:33:36 fabiankeil Exp $";
+const char miscutil_rcs[] = "$Id: miscutil.c,v 1.81 2016/02/26 12:29:17 fabiankeil Exp $";
 /*********************************************************************
  *
  * File        :  $Source: /cvsroot/ijbswa/current/miscutil.c,v $
@@ -893,6 +893,16 @@ time_t timegm(struct tm *tm)
          strcat(old_zone, zone);
          putenv(old_zone);
 #ifdef _WIN32
+         /* http://man7.org/linux/man-pages/man3/putenv.3.html
+          *   int putenv(char *string);
+          *     The string pointed to by string becomes part of the environment, so altering the
+          *     string changes the environment.
+          * In other words, the memory pointed to by *string is used until
+          *   a) another call to putenv() with the same e-var name
+          *   b) the program exits
+          *
+          * Windows e-vars don't work that way, so let's not leak memory.
+          */
          free(old_zone);
 #endif /* def _WIN32 */
       }