From 6c8387018b130eb4ef69ea377e9154ba04f0fd50 Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Tue, 22 Oct 2024 09:58:27 +0200
Subject: [PATCH] Avoid invalid XFree for XClassHint

It seems XGetClassHint() doesn't set the pointers to NULL if there is no
name, so we need to make sure it is cleared beforehand. Otherwise we can
get an invalid pointer given to XFree().
---
 unix/tx/TXWindow.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/unix/tx/TXWindow.cxx b/unix/tx/TXWindow.cxx
index b6a29d67..639c1382 100644
--- a/unix/tx/TXWindow.cxx
+++ b/unix/tx/TXWindow.cxx
@@ -313,6 +313,7 @@ void TXWindow::toplevel(const char* name, TXDeleteWindowCallback* dwc_,
 void TXWindow::setName(const char* name)
 {
   XClassHint classHint;
+  memset(&classHint, 0, sizeof(classHint));
   XGetClassHint(dpy, win(), &classHint);
   XFree(classHint.res_name);
   classHint.res_name = (char*)name;
-- 
2.39.5