commit ae68a399cdf3d94aff28e497d5360bc288f2131d
author Cary Clark <caryclark@google.com> Wed Jul 05 10:38:22 2017 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Thu Jul 06 12:35:14 2017 +0000
tree b6108249d8ba46de080e7f7b6816dab3e166e6bd
parent 3223e276c994c08ecc72d6925851f17e2d9c4732

protect against fuzzer

Fuzzer data may generate path without a computable
length.

R=reed@google.com
Bug: 739190
Change-Id: I052540932937f24951ce66699080b8b959fb1a46
Reviewed-on: https://skia-review.googlesource.com/21500
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>

src/core/SkPathMeasure.cpp

diff --git a/src/core/SkPathMeasure.cpp b/src/core/SkPathMeasure.cpp
index 626deeb..34b1648 100644
--- a/src/core/SkPathMeasure.cpp
+++ b/src/core/SkPathMeasure.cpp
@@ -513,6 +513,9 @@
     if (fLength < 0) {
         this->buildSegments();
     }
+    if (SkScalarIsNaN(fLength)) {
+        fLength = 0;
+    }
     SkASSERT(fLength >= 0);
     return fLength;
 }