1 files changed, 25 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/regress-944062-1.js b/deps/v8/test/mjsunit/compiler/regress-944062-1.js
new file mode 100644
index 0000000000..268999c881
--- /dev/null
+++ b/deps/v8/test/mjsunit/compiler/regress-944062-1.js
@@ -0,0 +1,25 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+const array = [42, 2.1];  // non-stable map (PACKED_DOUBLE)
+let b = false;
+
+function f() {
+  if (b) array[100000] = 4.2;  // go to dictionary mode
+  return 42
+};
+%NeverOptimizeFunction(f);
+
+function includes() {
+  return array.includes(f());
+}
+
+assertTrue(includes());
+assertTrue(includes());
+%OptimizeFunctionOnNextCall(includes);
+assertTrue(includes());
+b = true;
+assertTrue(includes());