From 83ebe5e70db05a03ab51f418ddec71a4a013dda9 Mon Sep 17 00:00:00 2001
From: robertl <robertl@f51c46e8-681c-474f-0cfe-069cfd0219fb>
Date: Mon, 20 Apr 2009 17:42:59 +0000
Subject: [PATCH] Don't loop endlessly on malformed tpo3 file.

git-svn-id: http://gpsbabel.googlecode.com/svn/trunk@3652 f51c46e8-681c-474f-0cfe-069cfd0219fb
---
 gpsbabel/tpo.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gpsbabel/tpo.c b/gpsbabel/tpo.c
index 372ab86dd..45a6491b2 100644
--- a/gpsbabel/tpo.c
+++ b/gpsbabel/tpo.c
@@ -210,7 +210,9 @@ tpo_read_until_section(const char* section_name, int seek_bytes)
 	int header_size = 0;
 
 	while (1) {
-		gbfread(&byte, 1, 1, tpo_file_in);
+		if (gbfread(&byte, 1, 1, tpo_file_in) < 1) {
+                  fatal(MYNAME ": malformed input file - attempt to read past end");
+                }
 		header_size++;
 
 		if (byte == section_name[match_index]) {
@@ -1856,4 +1858,3 @@ ff_vecs_t tpo3_vecs = {
 	tpo3_args,
 	CET_CHARSET_ASCII, 0	/* CET-REVIEW */
 };
-
-- 
2.30.2