diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/functionnames.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/functionnames.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,158 @@
+/*
+ * Most of these test cases are adapted from:
+ * http://johnjbarton.github.com/nonymous/index.html
+ */
+
+function assertName(fn, name) {
+    assertEq(displayName(fn), name)
+}
+
+/* simple names */
+var a = function b() {};
+function c() {};
+assertName(a, 'b');
+assertName(c, 'c');
+
+var a = function(){},
+    b = function(){};
+assertName(a, 'a');
+assertName(b, 'b');
+
+/* nested names */
+var main = function() {
+    function Foo(a) { assertName(a, 'main/foo<') }
+    var foo = new Foo(function() {});
+};
+assertName(main, 'main')
+main();
+
+/* duplicated */
+var Baz = Bar = function(){}
+assertName(Baz, 'Bar');
+assertName(Bar, 'Bar');
+
+/* returned from an immediate function */
+var Foo = function (){
+    assertName(arguments.callee, 'Foo<')
+    return function(){};
+}();
+assertName(Foo, 'Foo</<');
+
+/* various properties and such */
+var x = {fox: { bax: function(){} } };
+assertName(x.fox.bax, 'x.fox.bax');
+var foo = {foo: {foo: {}}};
+foo.foo.foo = function(){};
+assertName(foo.foo.foo, 'foo.foo.foo');
+var z = {
+    foz: function() {
+             var baz = function() {
+                 var y = {bay: function() {}};
+                 assertName(y.bay, 'z.foz/baz/y.bay');
+             };
+             assertName(baz, 'z.foz/baz');
+             baz();
+         }
+};
+assertName(z.foz, 'z.foz');
+z.foz();
+
+var outer = function() {
+    x.fox.bax.nx = function(){};
+    var w = {fow: { baw: function(){} } };
+    assertName(x.fox.bax.nx, 'outer/x.fox.bax.nx')
+    assertName(w.fow.baw, 'outer/w.fow.baw');
+};
+assertName(outer, 'outer');
+outer();
+function Fuz(){};
+Fuz.prototype = {
+  add: function() {}
+}
+assertName(Fuz.prototype.add, 'Fuz.prototype.add');
+
+var x = 1;
+x = function(){};
+assertName(x, 'x');
+
+var a = {b: {}};
+a.b.c = (function() {
+    assertName(arguments.callee, 'a.b.c<')
+}());
+
+a.b = function() {
+    function foo(f) { assertName(f, 'a.b/<'); };
+    return foo(function(){});
+}
+a.b();
+
+var bar = 'bar';
+a.b[bar] = function(){};
+assertName(a.b.bar, 'a.b[bar]');
+
+a.b = function() {
+    assertName(arguments.callee, 'a.b<');
+    return { a: function() {} }
+}();
+assertName(a.b.a, 'a.b</<.a');
+
+a = {
+    b: function(a) {
+        if (a)
+            return function() {};
+        else
+            return function() {};
+    }
+};
+assertName(a.b, 'a.b');
+assertName(a.b(true), 'a.b/<')
+assertName(a.b(false), 'a.b/<')
+
+function f(g) {
+    assertName(g, 'x<');
+    return g();
+}
+var x = f(function () { return function() {}; });
+assertName(x, 'x</<');
+
+var a = {'b': function(){}};
+assertName(a.b, 'a.b');
+
+function g(f) {
+  assertName(f, '');
+}
+label: g(function () {});
+
+var z = [function() {}];
+assertName(z[0], 'z<');
+
+/* fuzz bug from 785089 */
+odeURIL:(function(){})
+
+a = { 1: function () {} };
+assertName(a[1], 'a[1]');
+
+a = {
+  "embedded spaces": function(){},
+  "dots.look.like.property.references": function(){},
+  "\"\'quotes\'\"": function(){},
+  "!@#$%": function(){}
+};
+assertName(a["embedded spaces"], 'a["embedded spaces"]');
+assertName(a["dots.look.like.property.references"], 'a["dots.look.like.property.references"]');
+assertName(a["\"\'quotes\'\""], 'a["\\\"\'quotes\'\\\""]');
+assertName(a["!@#$%"], 'a["!@#$%"]');
+
+a.b = {};
+a.b.c = {};
+a.b["c"]["d e"] = { f: { 1: { "g": { "h i": function() {} } } } };
+assertName(a.b.c["d e"].f[1].g["h i"], 'a.b.c["d e"].f[1].g["h i"]');
+
+this.m = function () {};
+assertName(m, "this.m");
+
+function N() {
+  this.o = function () {}
+}
+let n = new N()
+assertName(n.o, "N/this.o");