From: Csaba Osztrogonác <ossy@webkit.org>
Date: Fri, 6 Mar 2015 07:33:11 +0000 (+0000)
Subject: Check for NULL pointer in ApplyStyleCommand
X-Git-Tag: archive/raspbian/2.14.3-1+rpi1~1^2^2^2~20
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=914ca8793b8014ff0c51f53c8b927d702a343bce;p=webkit2gtk.git

Check for NULL pointer in ApplyStyleCommand

===================================================================

Gbp-Pq: Name nullptr-applystylecommand.patch
---

diff --git a/Source/WebCore/editing/ApplyStyleCommand.cpp b/Source/WebCore/editing/ApplyStyleCommand.cpp
index 55377c69f5..e756e95fe7 100644
--- a/Source/WebCore/editing/ApplyStyleCommand.cpp
+++ b/Source/WebCore/editing/ApplyStyleCommand.cpp
@@ -257,6 +257,9 @@ void ApplyStyleCommand::applyBlockStyle(EditingStyle *style)
     // addBlockStyleIfNeeded may moveParagraphs, which can remove these endpoints.
     // Calculate start and end indices from the start of the tree that they're in.
     Node* scope = highestEditableRoot(visibleStart.deepEquivalent());
+    if (!scope)
+        return;
+
     RefPtr<Range> startRange = Range::create(document(), firstPositionInNode(scope), visibleStart.deepEquivalent().parentAnchoredEquivalent());
     RefPtr<Range> endRange = Range::create(document(), firstPositionInNode(scope), visibleEnd.deepEquivalent().parentAnchoredEquivalent());
     int startIndex = TextIterator::rangeLength(startRange.get(), true);