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-rw-r--r--js/src/jit-test/tests/basic/deepForInLoop.js12
1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/deepForInLoop.js b/js/src/jit-test/tests/basic/deepForInLoop.js
new file mode 100644
index 000000000..8bae45eb1
--- /dev/null
+++ b/js/src/jit-test/tests/basic/deepForInLoop.js
@@ -0,0 +1,12 @@
+function deepForInLoop() {
+ // NB: the number of props set in C is arefully tuned to match 8 = 2.
+ function C(){this.p = 1, this.q = 2}
+ C.prototype = {p:1, q:2, r:3, s:4, t:5};
+ var o = new C;
+ var j = 0;
+ var a = [];
+ for (var i in o)
+ a[j++] = i;
+ return a.join("");
+}
+assertEq(deepForInLoop(), "pqrst");