1 files changed, 46 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/asm/asm-stdlib.js b/deps/v8/test/mjsunit/asm/asm-stdlib.js
new file mode 100644
index 0000000000..65d0b76ff7
--- /dev/null
+++ b/deps/v8/test/mjsunit/asm/asm-stdlib.js
@@ -0,0 +1,46 @@
+// Copyright 2017 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
+
+(function FailProxyAsStdlib() {
+  // Test that passing a proxy as "stdlib" will cause module instantiation to
+  // fail while still only triggering one observable property load.
+  function Module(stdlib, foreign, heap) {
+    "use asm";
+    var a = stdlib.Math.PI;
+    function f() { return a }
+    return { f:f };
+  }
+  var trap_was_called = 0;
+  var proxy = new Proxy(this, { get:function(target, property, receiver) {
+    trap_was_called++;
+    if (property == "Math") return { PI:23 };
+    return Reflect.get(target, property, receiver);
+  }});
+  var m = Module(proxy);
+  assertFalse(%IsAsmWasmCode(Module));
+  assertEquals(1, trap_was_called);
+  assertEquals(23, m.f());
+})();
+
+(function FailGetterInStdlib() {
+  // Test that accessors as part of "stdlib" will cause module instantiation to
+  // fail while still only triggering one observable property load.
+  function Module(stdlib, foreign, heap) {
+    "use asm";
+    var a = new stdlib.Int8Array(heap);
+    function f() { return a[0] | 0 }
+    return { f:f };
+  }
+  var trap_was_called = 0;
+  var observer = { get Int8Array() {
+    trap_was_called++;
+    return function() { return [ 23 ] };
+  }};
+  var m = Module(observer);
+  assertFalse(%IsAsmWasmCode(Module));
+  assertEquals(1, trap_was_called);
+  assertEquals(23, m.f());
+})();