# HG changeset patch
# User Brendan Cully <brendan@kublai.com>
# Date 1178561955 25200
# Node ID 47d08903b79b78ce26516de97682b244d3573c47
# Parent  f6861b85f22b1656a870aeabad83a1bbd9794af9
Use signed arithmetic in mutt_gecos_name to avoid an overflow.
Closes #2885.

diff -r f6861b85f22b -r 47d08903b79b muttlib.c
--- a/muttlib.c	Wed May 02 10:50:07 2007 -0700
+++ b/muttlib.c	Mon May 07 11:19:15 2007 -0700
@@ -540,7 +540,7 @@ char *mutt_gecos_name (char *dest, size_
     if (dest[idx] == '&')
     {
       memmove (&dest[idx + pwnl], &dest[idx + 1],
-	       MAX(destlen - idx - pwnl - 1, 0));
+	       MAX((ssize_t)(destlen - idx - pwnl - 1), 0));
       memcpy (&dest[idx], pw->pw_name, MIN(destlen - idx - 1, pwnl));
       dest[idx] = toupper ((unsigned char) dest[idx]);
     }