1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Environment-names-02.js b/js/src/jit-test/tests/debug/Environment-names-02.js
new file mode 100644
index 000000000..982043f63
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Environment-names-02.js
@@ -0,0 +1,34 @@
+// env.names() on object environments ignores property names that are not identifiers.
+
+var g = newGlobal();
+var dbg = Debugger(g);
+var withNames, globalNames;
+g.h = function () {
+    var env = dbg.getNewestFrame().environment;
+    withNames = env.names();
+    while (env.parent !== null)
+        env = env.parent;
+    globalNames = env.names();
+};
+
+g.eval("" +
+       function fill(obj) {
+           obj.sanityCheck = 1;
+           obj["0xcafe"] = 2;
+           obj[" "] = 3;
+           obj[""] = 4;
+           obj[0] = 5;
+           obj[Symbol.for("moon")] = 6;
+           return obj;
+       })
+g.eval("fill(this);\n" +
+       "with (fill({})) h();");
+
+for (var names of [withNames, globalNames]) {
+    assertEq(names.indexOf("sanityCheck") !== -1, true);
+    assertEq(names.indexOf("0xcafe"), -1);
+    assertEq(names.indexOf(" "), -1);
+    assertEq(names.indexOf(""), -1);
+    assertEq(names.indexOf("0"), -1);
+    assertEq(names.indexOf(Symbol.for("moon")), -1);
+}