From bfe0f7dd4dbc37048e111caafdd9b5f555bd8d16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <mail@baedert.org>
Date: Fri, 11 Jan 2019 17:46:12 +0100
Subject: [PATCH] label: Skip updating link state if we have no layout

This can happen whenever the ::activate-link handler sets different
markup on the label, causing all links to be recreated. In this case,
the GtkLabelLink* passed to emit_activate_link is garbage after the
g_signal_emit call and we shouldn't try to do anything with it.

Fixes #1498
---
 gtk/gtklabel.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 1a2453ff5e..4bb92fd92d 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -6755,6 +6755,11 @@ emit_activate_link (GtkLabel     *label,
   GtkStateFlags state;
 
   g_signal_emit (label, signals[ACTIVATE_LINK], 0, link->uri, &handled);
+
+  /* signal handler might have invalidated the layout */
+  if (!priv->layout)
+    return;
+
   if (handled && priv->track_links && !link->visited &&
       priv->select_info && priv->select_info->links)
     {