1 files changed, 14 insertions, 1 deletions
diff --git a/tests/TessellatingPathRendererTests.cpp b/tests/TessellatingPathRendererTests.cpp
index a9913769df..0c7a5ca4c5 100644
--- a/tests/TessellatingPathRendererTests.cpp
+++ b/tests/TessellatingPathRendererTests.cpp
@@ -560,7 +560,7 @@ static SkPath create_path_38() {
     return path;
 }
 
-// Reduction from crbug.com/851409.
+// Reduction from crbug.com/851409. Exercises collinear last vertex.
 static SkPath create_path_39() {
     SkPath path;
     path.moveTo(2072553216, 0);
@@ -571,6 +571,18 @@ static SkPath create_path_39() {
     return path;
 }
 
+// Another reduction from crbug.com/851409. Exercises two sequential collinear edges.
+static SkPath create_path_40() {
+    SkPath path;
+    path.moveTo(2072553216, 0);
+    path.lineTo(2072553216, 1);
+    path.lineTo(2072553472, -13);
+    path.lineTo(2072553216, 0);
+    path.lineTo(2072553472, -6);
+    path.lineTo(2072553472, -13);
+    return path;
+}
+
 static std::unique_ptr<GrFragmentProcessor> create_linear_gradient_processor(GrContext* ctx) {
 
     SkPoint pts[2] = { {0, 0}, {1, 1} };
@@ -670,4 +682,5 @@ DEF_GPUTEST_FOR_ALL_CONTEXTS(TessellatingPathRendererTests, reporter, ctxInfo) {
     test_path(ctx, rtc.get(), create_path_37());
     test_path(ctx, rtc.get(), create_path_38(), SkMatrix(), GrAAType::kCoverage);
     test_path(ctx, rtc.get(), create_path_39());
+    test_path(ctx, rtc.get(), create_path_40());
 }