2 files changed, 20 insertions, 0 deletions
diff --git a/src/core/SkPathMeasure.cpp b/src/core/SkPathMeasure.cpp
index b06bef7fc5..c0d97924cb 100644
--- a/src/core/SkPathMeasure.cpp
+++ b/src/core/SkPathMeasure.cpp
@@ -652,6 +652,9 @@ bool SkPathMeasure::getSegment(SkScalar startD, SkScalar stopD, SkPath* dst,
     if (startD > stopD) {
         return false;
     }
+    if (!fSegments.count()) {
+        return false;
+    }
 
     SkPoint  p;
     SkScalar startT, stopT;
diff --git a/tests/DashPathEffectTest.cpp b/tests/DashPathEffectTest.cpp
index f55bcf8a85..68fce9a142 100644
--- a/tests/DashPathEffectTest.cpp
+++ b/tests/DashPathEffectTest.cpp
@@ -87,3 +87,20 @@ DEF_TEST(DashPathEffectTest_asPoints, r) {
         }
     }
 }
+
+DEF_TEST(DashPath_bug4871, r) {
+    SkPath path;
+    path.moveTo(30, 24);
+    path.cubicTo(30.002f, 24, 30, 24, 30, 24);
+    path.close();
+
+    SkScalar intervals[2] = { 1, 1 };
+    SkAutoTUnref<SkPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
+
+    SkPaint paint;
+    paint.setStyle(SkPaint::kStroke_Style);
+    paint.setPathEffect(dash);
+
+    SkPath fill;
+    paint.getFillPath(path, &fill);
+}