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-rw-r--r--js/src/jit-test/tests/basic/bug770952.js7
1 files changed, 7 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug770952.js b/js/src/jit-test/tests/basic/bug770952.js
new file mode 100644
index 000000000..2a6efeeb7
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug770952.js
@@ -0,0 +1,7 @@
+// |jit-test| error: TypeError
+load(libdir + "iteration.js");
+
+eval("var x; typeof x")
+Array.prototype[Symbol.iterator] = function () { for(y in x); };
+for (var v of ['a', 'b', 'c', 'd'])
+ s = v;