From 0571be87e09c6db11be8c56c773b563c2b4c99a4 Mon Sep 17 00:00:00 2001
From: Hanno Boeck <hanno@gentoo.org>
Date: Sat, 26 Mar 2016 04:10:15 +0900
Subject: lua: Avoid heap buffer overflow

* gettext-tools/src/x-lua.c (string_end): Allocate a room for
terminating NUL.  Reported in: http://savannah.gnu.org/bugs/?4753

Copyright-paperwork-exempt: yes
---
 gettext-tools/src/x-lua.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gettext-tools/src/x-lua.c b/gettext-tools/src/x-lua.c
index 0399c49..78ac24f 100644
--- a/gettext-tools/src/x-lua.c
+++ b/gettext-tools/src/x-lua.c
@@ -451,6 +451,12 @@ string_add (int c)
 static void
 string_end ()
 {
+  if (string_buf_length >= string_buf_alloc)
+    {
+      string_buf_alloc = string_buf_alloc + 1;
+      string_buf = xrealloc (string_buf, string_buf_alloc);
+    }
+
   string_buf[string_buf_length] = '\0';
 }
 
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