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-rw-r--r--js/src/jit-test/tests/basic/testNewArrayCount.js12
1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testNewArrayCount.js b/js/src/jit-test/tests/basic/testNewArrayCount.js
new file mode 100644
index 0000000000..cb7e6d9843
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testNewArrayCount.js
@@ -0,0 +1,12 @@
+function testNewArrayCount()
+{
+ function count(a) { var n = 0; for (var p in a) n++; return n; }
+ var a = [];
+ for (var i = 0; i < 5; i++)
+ a = [0];
+ assertEq(count(a), 1);
+ for (var i = 0; i < 5; i++)
+ a = [0, , 2];
+ assertEq(count(a), 2);
+}
+testNewArrayCount();