From 96afb5250d1d89dbd445c91e45b650dca0c5cb64 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Fri, 10 Apr 2020 21:48:39 +0200
Subject: Issue #1511 - Bail on orphan situation.

This resolves #1511
---
 layout/generic/nsContainerFrame.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'layout')

diff --git a/layout/generic/nsContainerFrame.cpp b/layout/generic/nsContainerFrame.cpp
index abf687c9b..da6e6cf79 100644
--- a/layout/generic/nsContainerFrame.cpp
+++ b/layout/generic/nsContainerFrame.cpp
@@ -1925,6 +1925,10 @@ nsContainerFrame::RenumberFrameAndDescendants(int32_t* aOrdinal,
             nsIFrame *f = bullet;
             do {
               nsIFrame *parent = f->GetParent();
+              if (!parent) {
+                // We may have an orphan situation in some corner cases.
+                break;
+              }
               parent->ChildIsDirty(f);
               f = parent;
             } while (f != listItem);
-- 
cgit v1.2.3