gentoo-overlay/dev-db/postgresql/files/postgresql-9.1-tz-dir-overflow.patch

--- a/src/timezone/pgtz.c	2015-02-02 15:45:23.000000000 -0500
+++ b/src/timezone/pgtz.c	2015-04-07 14:21:22.341832190 -0400
@@ -586,6 +586,12 @@
 		if (direntry->d_name[0] == '.')
 			continue;
 
+		/* if current working directory has the same name as current direntry name,
+		 * then skip as this is a recursive fs loop
+		 */
+		if (strncmp(direntry->d_name,tzdirsub,strlen(direntry->d_name)) == 0)
+			continue;
+
 		snprintf(tzdir + tzdir_orig_len, MAXPGPATH - tzdir_orig_len,
 				 "/%s", direntry->d_name);
 
@@ -1615,6 +1621,13 @@
 		if (direntry->d_name[0] == '.')
 			continue;
 
+		/* copy current working directory so that there is no risk of modification by basename(),
+		 * and compare to current direntry name; skip if they are the same as this is a recursive fs loop
+		 */
+		snprintf(fullname, MAXPGPATH, "%s", dir->dirname[dir->depth]);
+		if (strncmp(direntry->d_name,basename(fullname),strlen(direntry->d_name)) == 0)
+			continue;
+
 		snprintf(fullname, MAXPGPATH, "%s/%s",
 				 dir->dirname[dir->depth], direntry->d_name);
 		if (stat(fullname, &statbuf) != 0)