fix bug introduced with SK_IGNORE_CUBIC_STROKE_FIX where we no longer respected

tests/PathTest.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Test.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
@@ skipping 13 matching lines @@
     #define SUPPRESS_VISIBILITY_WARNING __attribute__((visibility("hidden")))
 #endif
 
 static SkSurface* new_surface(int w, int h) {
     SkImage::Info info = {
         w, h, SkImage::kPMColor_ColorType, SkImage::kPremul_AlphaType
     };
     return SkSurface::NewRaster(info);
 }
 
+static void test_bad_cubic_crbug229478() {
+    const SkPoint pts[] = {
+        { 4595.91064f,  -11596.9873f },
+        { 4597.2168f,   -11595.9414f },
+        { 4598.52344f,  -11594.8955f },
+        { 4599.83008f,  -11593.8496f },
+    };
+    
+    SkPath path;
+    path.moveTo(pts[0]);
+    path.cubicTo(pts[1], pts[2], pts[3]);
+    
+    SkPaint paint;
+    paint.setStyle(SkPaint::kStroke_Style);
+    paint.setStrokeWidth(20);
+    
+    SkPath dst;
+    // Before the fix, this would infinite-recurse, and run out of stack
+    // because we would keep trying to subdivide a degenerate cubic segment.
+    paint.getFillPath(path, &dst, NULL);
+}
+
 static void build_path_170666(SkPath& path) {
     path.moveTo(17.9459f, 21.6344f);
     path.lineTo(139.545f, -47.8105f);
     path.lineTo(139.545f, -47.8105f);
     path.lineTo(131.07f, -47.3888f);
     path.lineTo(131.07f, -47.3888f);
     path.lineTo(122.586f, -46.9532f);
     path.lineTo(122.586f, -46.9532f);
     path.lineTo(18076.6f, 31390.9f);
     path.lineTo(18076.6f, 31390.9f);
@@ skipping 2302 matching lines @@
     test_strokerec(reporter);
     test_addPoly(reporter);
     test_isfinite(reporter);
     test_isfinite_after_transform(reporter);
     test_arb_round_rect_is_convex(reporter);
     test_arb_zero_rad_round_rect_is_rect(reporter);
     test_addrect_isfinite(reporter);
     test_tricky_cubic();
     test_clipped_cubic();
     test_crbug_170666();
+    test_bad_cubic_crbug229478();
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("Path", PathTestClass, TestPath)