From ca99c524e828cc1a1cfeff3cdfc5349f87143829 Mon Sep 17 00:00:00 2001
From: Pádraig Brady <P@draigBrady.com>
Date: Thu, 24 Nov 2016 15:56:01 +0000
Subject: ptx: fix an invalid heap reference with short --width

* src/ptx.c (fix_output_parameters): Ensure line_width doesn't
go negative, which can happen when the --width is less
than the --gap-size.
* tests/misc/ptx-overrun.sh: Add a test case that triggers
with ASAN.  (Note the longer filename is needed to trigger).
Fixes http://bugs.gnu.org/25011
---
 tests/misc/ptx-overrun.sh | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'tests')

diff --git a/tests/misc/ptx-overrun.sh b/tests/misc/ptx-overrun.sh
index a4f2e382e..3b4681264 100755
--- a/tests/misc/ptx-overrun.sh
+++ b/tests/misc/ptx-overrun.sh
@@ -41,4 +41,9 @@ ptx ws.in ws.in | sort | uniq -u > out
 compare /dev/null out || fail=1
 
 
+# Trigger an invalid heap reference noticed by gcc -fsanitize=address
+# from coreutils-8.25 and earlier.
+echo a > a
+ptx -w1 -A $PWD/a >/dev/null || fail=1
+
 Exit $fail
-- 
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