From 44fb7c5b5498ecdb1720ddcd767eaddc0c57ef38 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 14 Oct 2024 18:59:04 +0300
Subject: [PATCH] glib: Make sure GLIB_OLD_LOG_API is a NUL-terminated string

Every usage in GLib ensures this but theoretically external code might
pass something else. As this is only meant to be used internally from
GLib, don't support the other case but at least avoid potential out of
bound reads.
---
 glib/gmessages.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/glib/gmessages.c b/glib/gmessages.c
index 9db137b76..fba55b619 100644
--- a/glib/gmessages.c
+++ b/glib/gmessages.c
@@ -2625,6 +2625,7 @@ log_is_old_api (const GLogField *fields,
 {
   return (n_fields >= 1 &&
           g_strcmp0 (fields[0].key, "GLIB_OLD_LOG_API") == 0 &&
+          fields[0].length < 0 &&
           g_strcmp0 (fields[0].value, "1") == 0);
 }