From ef7f989da6fc3e3ee12ea4143a99d2ec022f8f72 Mon Sep 17 00:00:00 2001
From: "Darryl L. Miles" <darryl.miles@darrylmiles.org>
Date: Wed, 16 Oct 2024 10:20:09 +0100
Subject: [PATCH] grTCairo1.c: GrTCairoIconUpdate() potential -1 out-of-bound
 access

SonarCloud
Access of 'char' element in the region at index -1
This was not picked up, even though similar code was.
---
 graphics/grTCairo1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/graphics/grTCairo1.c b/graphics/grTCairo1.c
index bdb2bff3..d0e1f2d5 100644
--- a/graphics/grTCairo1.c
+++ b/graphics/grTCairo1.c
@@ -1490,7 +1490,7 @@ char	*text;
 	XSetClassHint( grXdpy, wind, &class);
 	if (text)
 	{
-		if ((brack = strchr(text, '[')))
+		if ((brack = strchr(text, '[')) && brack != text)
 		{
 			brack--;
 			*brack = 0;