From dce7a0c72b9855dc81fb8dc78d1d62aa4330b8f7 Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <blub@speed.at>
Date: Wed, 2 Jan 2013 10:44:39 +0100
Subject: [PATCH] update old_string on failure in ftepp_macro_expand to not
 segfault on a preprocessor-error inside recursive preprocessor calls

---
 ftepp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ftepp.c b/ftepp.c
index 21669a8..d9197e5 100644
--- a/ftepp.c
+++ b/ftepp.c
@@ -652,6 +652,7 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param
     ftepp->lex = inlex;
     ftepp_recursion_header(ftepp);
     if (!ftepp_preprocess(ftepp)) {
+        old_string = ftepp->output_string;
         lex_close(ftepp->lex);
         retval = false;
         goto cleanup;
-- 
2.39.2