1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/non262/Function/function-toString-builtin.js b/js/src/tests/non262/Function/function-toString-builtin.js
new file mode 100644
index 0000000000..d4efc81c14
--- /dev/null
+++ b/js/src/tests/non262/Function/function-toString-builtin.js
@@ -0,0 +1,42 @@
+
+// Greatly (!) simplified patterns for the PropertyName production.
+var propertyName = [
+    // PropertyName :: LiteralPropertyName :: IdentifierName
+    "\\w+",
+
+    // PropertyName :: LiteralPropertyName :: StringLiteral
+    "(?:'[^']*')",
+    "(?:\"[^\"]*\")",
+
+    // PropertyName :: LiteralPropertyName :: NumericLiteral
+    "\\d+",
+
+    // PropertyName :: ComputedPropertyName
+    "(?:\\[[^\\]]+\\])",
+].join("|")
+
+var nativeCode = RegExp([
+    "^", "function", ("(?:" + propertyName + ")?"), "\\(", "\\)", "\\{", "\\[native code\\]", "\\}", "$"
+].join("\\s*"));
+
+
+// Bound functions are considered built-ins.
+reportMatch(nativeCode, function(){}.bind().toString());
+reportMatch(nativeCode, function fn(){}.bind().toString());
+
+// Built-ins which are well-known intrinsic objects.
+reportMatch(nativeCode, Array.toString());
+reportMatch(nativeCode, Object.prototype.toString.toString());
+reportMatch(nativeCode, decodeURI.toString());
+
+// Other built-in functions.
+reportMatch(nativeCode, Math.asin.toString());
+reportMatch(nativeCode, String.prototype.blink.toString());
+reportMatch(nativeCode, RegExp.prototype[Symbol.split].toString());
+
+// Built-in getter functions.
+reportMatch(nativeCode, Object.getOwnPropertyDescriptor(RegExp.prototype, "flags").get.toString());
+reportMatch(nativeCode, Object.getOwnPropertyDescriptor(Object.prototype, "__proto__").get.toString());
+
+// Built-in setter functions.
+reportMatch(nativeCode, Object.getOwnPropertyDescriptor(Object.prototype, "__proto__").set.toString());