commit 9ea47bedb945fe51c7805b4f2defccccb8249865
author Yuqian Li <liyuqian@google.com> Thu May 31 15:18:54 2018 -0700
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Fri Jun 01 12:16:15 2018 +0000
tree ae49df8f45fc072e38b8024659ff9b1bef7dadd0
parent fbe7166685b860a530ebe545aef5596c6a86c403

Skip bad line segments inside gen_alpha_deltas

Bug: chromium:847386
Change-Id: I5bb3268c27ecfbd66268adbc36be3ea72e0a69ba
Reviewed-on: https://skia-review.googlesource.com/131324
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>
Auto-Submit: Yuqian Li <liyuqian@google.com>

src/core/SkScan_DAAPath.cpp

diff --git a/src/core/SkScan_DAAPath.cpp b/src/core/SkScan_DAAPath.cpp
index 329e69e..572814b 100644
--- a/src/core/SkScan_DAAPath.cpp
+++ b/src/core/SkScan_DAAPath.cpp
@@ -182,8 +182,9 @@
             }
 
             SkAnalyticEdge l, r;
-            l.setLine(lb->fP0, lb->fP1);
-            r.setLine(rb->fP0, rb->fP1);
+            if (!l.setLine(lb->fP0, lb->fP1) || !r.setLine(rb->fP0, rb->fP1)) {
+                continue;
+            }
 
             SkFixed xorUpperY = l.fUpperY ^ r.fUpperY;
             SkFixed xorLowerY = l.fLowerY ^ r.fLowerY;