From: joshualitt <joshualitt@chromium.org>
Date: Wed, 29 Jul 2015 18:10:38 +0000 (-0700)
Subject: Fix for GrAtlasTextContext crash
X-Git-Tag: accepted/tizen/5.0/unified/20181102.025319~1532
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e43e3bdd6d7a49623496331a17344a76d04caa7e;p=platform%2Fupstream%2FlibSkiaSharp.git

Fix for GrAtlasTextContext crash

BUG=510931

Review URL: https://codereview.chromium.org/1256763005
---

diff --git a/src/gpu/GrAtlasTextBlob.h b/src/gpu/GrAtlasTextBlob.h
index 1f37c67..502177d 100644
--- a/src/gpu/GrAtlasTextBlob.h
+++ b/src/gpu/GrAtlasTextBlob.h
@@ -99,8 +99,9 @@ struct GrAtlasTextBlob : public SkRefCnt {
 
         SubRunInfo& push_back() {
             // Forward glyph / vertex information to seed the new sub run
-            SubRunInfo& prevSubRun = fSubRunInfo.back();
             SubRunInfo& newSubRun = fSubRunInfo.push_back();
+            SubRunInfo& prevSubRun = fSubRunInfo.fromBack(1);
+
             newSubRun.fGlyphStartIndex = prevSubRun.fGlyphEndIndex;
             newSubRun.fGlyphEndIndex = prevSubRun.fGlyphEndIndex;