add fail condition to addexpanded

tests/PathOpsBuilderTest.cpp

Index: tests/PathOpsBuilderTest.cpp
diff --git a/tests/PathOpsBuilderTest.cpp b/tests/PathOpsBuilderTest.cpp
index e29b4bc473706550bc4c6aff0de3a1370815914c..a111b6145d6806a63703454455f98e32834eb1e2 100644
--- a/tests/PathOpsBuilderTest.cpp
+++ b/tests/PathOpsBuilderTest.cpp
@@ -323,3 +323,24 @@ path.lineTo(SkBits2Float(0x42e33333), SkBits2Float(0x42940000));  // 113.6f, 74
     SkPath result;
     builder.resolve(&result);
 }
+
+DEF_TEST(SkOpBuilder618991, reporter) {
+    SkPath path0;
+    path0.moveTo(140, 40);
+    path0.lineTo(200, 210);
+    path0.lineTo(40, 100);
+    path0.lineTo(2.22223e+07f, 2.22222e+14f);
+    path0.lineTo(2.22223e+07f, 2.22222e+14f);
+
+    SkPath path1;
+    path1.moveTo(160, 60);
+    path1.lineTo(220, 230);
+    path1.lineTo(60, 120);
+    path1.lineTo(2.22223e+07f, 2.22222e+14f);
+    path1.lineTo(2.22223e+07f, 2.22222e+14f);
+
+    SkOpBuilder builder;
+    builder.add(path0, SkPathOp::kUnion_SkPathOp);
+    builder.add(path1, SkPathOp::kUnion_SkPathOp);
+    builder.resolve(&path0);
+}