Add m-esr52 at 52.6.0

1 files changed, 40 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/arguments/rest-with-arguments.js b/js/src/jit-test/tests/arguments/rest-with-arguments.js
new file mode 100644
index 000000000..7dfc63c73
--- /dev/null
+++ b/js/src/jit-test/tests/arguments/rest-with-arguments.js
@@ -0,0 +1,40 @@
+// 'arguments' is allowed with rest parameters.
+
+var args;
+
+function restWithArgs(a, b, ...rest) {
+    return arguments;
+}
+
+args = restWithArgs(1, 3, 6, 9);
+assertEq(args.length, 4);
+assertEq(JSON.stringify(args), '{"0":1,"1":3,"2":6,"3":9}');
+
+args = restWithArgs();
+assertEq(args.length, 0);
+
+args = restWithArgs(4, 5);
+assertEq(args.length, 2);
+assertEq(JSON.stringify(args), '{"0":4,"1":5}');
+
+function restWithArgsEval(a, b, ...rest) {
+    return eval("arguments");
+}
+
+args = restWithArgsEval(1, 3, 6, 9);
+assertEq(args.length, 4);
+assertEq(JSON.stringify(args), '{"0":1,"1":3,"2":6,"3":9}');
+
+function g(...rest) {
+    h();
+}
+function h() {
+    g.arguments;
+}
+g();
+
+// eval() is evil, but you can still use it with rest parameters!
+function still_use_eval(...rest) {
+    eval("x = 4");
+}
+still_use_eval();