From 2fa6e2e2d1ffb8811b5d5f36f344f11a6c22283b Mon Sep 17 00:00:00 2001
From: hundertzwei <46927478+hundertzwei@users.noreply.github.com>
Date: Wed, 19 Jul 2023 14:50:17 +0200
Subject: [PATCH] Update FvwmAuto.c

from gcc-12 up, this modul will terminated with *** buffer overflow detected ***.
That's because the sprintf further down will copy not only the string, but also a linefeed and a terminating null-byte at the end of the buffer.
This is two times off by one.
---
 modules/FvwmAuto/FvwmAuto.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/FvwmAuto/FvwmAuto.c b/modules/FvwmAuto/FvwmAuto.c
index d789797a1..8c3a1f17d 100644
--- a/modules/FvwmAuto/FvwmAuto.c
+++ b/modules/FvwmAuto/FvwmAuto.c
@@ -344,7 +344,7 @@ main(int argc, char **argv)
 	{
 		len += 32;
 	}
-	buf = safemalloc(len);
+	buf = safemalloc(len + 1 + 1 ); // '\n' '\0' at the end of the string
 
 	while (!isTerminated)
 	{