Add m-esr52 at 52.6.0

1 files changed, 23 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/for-of/bug-728079-js17-1.js b/js/src/jit-test/tests/for-of/bug-728079-js17-1.js
new file mode 100644
index 000000000..d4a912408
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/bug-728079-js17-1.js
@@ -0,0 +1,23 @@
+// for-of does not trigger the JS 1.7 for-in destructuring special case.
+
+version(170);
+
+var data = [[1, 2, 3], [4, 5, 6, 7]];
+
+function test(vars, expr, result) {
+    var s = '';
+    eval("for (" + vars + " of data) s += (" + expr + ") + ';';");
+    assertEq(s, result);
+}
+
+for (var prefix of ["var ", "let ", ""]) {
+    test(prefix + "[a, b, c]",
+         "a + ',' + b + ',' + c",
+         "1,2,3;4,5,6;");
+}
+
+test("var [a]", "a", "1;4;");
+test("var {length: len}", "len", "3;4;");
+test("var {length}", "length", "3;4;");
+test("{}", "0", "0;0;");
+