1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/regress-bug629723.js b/js/src/tests/non262/extensions/regress-bug629723.js
new file mode 100644
index 0000000000..6c826e0c20
--- /dev/null
+++ b/js/src/tests/non262/extensions/regress-bug629723.js
@@ -0,0 +1,16 @@
+function f(foo) {
+    "use strict";
+    foo.bar;
+}
+
+var actual;
+try {
+    f();
+    actual = "no error";
+} catch (x) {
+    actual = (x instanceof TypeError) ? "type error" : "some other error";
+    actual += (/use strict/.test(x)) ? " with directive" : " without directive";
+}
+
+reportCompare("type error without directive", actual,
+              "decompiled expressions in error messages should not include directive prologues");