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-rw-r--r--js/src/jit-test/tests/for-of/arrays-2.js10
1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/arrays-2.js b/js/src/jit-test/tests/for-of/arrays-2.js
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--- /dev/null
+++ b/js/src/jit-test/tests/for-of/arrays-2.js
@@ -0,0 +1,10 @@
+// A for-of loop over an array does not take a snapshot of the array elements.
+// Instead, each time the loop needs an element from the array, it gets its current value.
+
+var a = [3, 5, 5, 4, 0, 5];
+var s = '';
+for (var i of a) {
+ s += i;
+ a[i] = 'X';
+}
+assertEq(s, '355X0X');