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-rw-r--r--js/src/tests/non262/regress/regress-551763-0.js27
1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/non262/regress/regress-551763-0.js b/js/src/tests/non262/regress/regress-551763-0.js
new file mode 100644
index 0000000000..6aeceac232
--- /dev/null
+++ b/js/src/tests/non262/regress/regress-551763-0.js
@@ -0,0 +1,27 @@
+(function() {
+ var o = {'arguments': 42};
+ with (o) { // Definitely forces heavyweight.
+ // Note syntax is not a property access.
+ reportCompare(delete arguments, true,
+ "arguments property deletion within with block");
+ }
+ reportCompare('arguments' in o, false,
+ "property deletion observable");
+})();
+
+(function() {
+ var o = {'arguments': 42};
+ delete o.arguments;
+ reportCompare('arguments' in o, false,
+ "arguments property deletion with property access syntax");
+})();
+
+(function() {
+ var arguments = 42; // Forces heavyweight.
+ reportCompare(delete arguments, false,
+ "arguments variable");
+})();
+
+(function() {
+ reportCompare(delete arguments, false, "arguments object");
+})();