diff --git a/src/pathops/SkOpBuilder.cpp b/src/pathops/SkOpBuilder.cpp
index 2fbd4f0..0d229a8 100644
--- a/src/pathops/SkOpBuilder.cpp
+++ b/src/pathops/SkOpBuilder.cpp
@@ -158,9 +158,11 @@
             *result = original;
             return false;
         }
-        // convert the even odd result back to winding form before accumulating it
-        FixWinding(&fPathRefs[index]);
-        sum.addPath(fPathRefs[index]);
+        if (!fPathRefs[index].isEmpty()) {
+            // convert the even odd result back to winding form before accumulating it
+            FixWinding(&fPathRefs[index]);
+            sum.addPath(fPathRefs[index]);
+        }
     }
     reset();
     bool success = Simplify(sum, result);
diff --git a/src/pathops/SkOpSpan.cpp b/src/pathops/SkOpSpan.cpp
index e89ec3e..ae4771c 100755
--- a/src/pathops/SkOpSpan.cpp
+++ b/src/pathops/SkOpSpan.cpp
@@ -279,7 +279,10 @@
     prev->setNext(next);
     next->setPrev(prev);
     this->segment()->detach(this);
-    this->globalState()->coincidence()->fixUp(this->ptT(), kept);
+    SkOpCoincidence* coincidence = this->globalState()->coincidence();
+    if (coincidence) {
+        coincidence->fixUp(this->ptT(), kept);
+    }
     this->ptT()->setDeleted();
 }