From 18c00976bd62938fa13bc9d490ac8fd39b769f6d Mon Sep 17 00:00:00 2001
From: reed <reed@chromium.org>
Date: Sat, 2 Apr 2016 18:40:40 -0700
Subject: check for bad params sent to discrete patheffect

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1853953002

TBR=

Review URL: https://codereview.chromium.org/1853953002
---
 src/effects/SkDiscretePathEffect.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/effects/SkDiscretePathEffect.cpp')

diff --git a/src/effects/SkDiscretePathEffect.cpp b/src/effects/SkDiscretePathEffect.cpp
index 5af6ab4ceb..1c6039c842 100644
--- a/src/effects/SkDiscretePathEffect.cpp
+++ b/src/effects/SkDiscretePathEffect.cpp
@@ -14,6 +14,12 @@
 
 sk_sp<SkPathEffect> SkDiscretePathEffect::Make(SkScalar segLength, SkScalar deviation,
                                                uint32_t seedAssist) {
+    if (!SkScalarIsFinite(segLength) || !SkScalarIsFinite(deviation)) {
+        return nullptr;
+    }
+    if (segLength <= SK_ScalarNearlyZero) {
+        return nullptr;
+    }
     return sk_sp<SkPathEffect>(new SkDiscretePathEffect(segLength, deviation, seedAssist));
 }
 
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