Strict mode delete of unqualified identifier.

test/mjsunit/strict-mode.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 151 matching lines @@
     "octal\\032directive";\
     "use strict";\
   }', SyntaxError);
 
 // Duplicate data properties.
 CheckStrictMode("var x = { dupe : 1, nondupe: 3, dupe : 2 };", SyntaxError);
 CheckStrictMode("var x = { '1234' : 1, '2345' : 2, '1234' : 3 };", SyntaxError);
 CheckStrictMode("var x = { '1234' : 1, '2345' : 2, 1234 : 3 };", SyntaxError);
 CheckStrictMode("var x = { 3.14 : 1, 2.71 : 2, 3.14 : 3 };", SyntaxError);
 CheckStrictMode("var x = { 3.14 : 1, '3.14' : 2 };", SyntaxError);
-CheckStrictMode("var x = { 123: 1, 123.00000000000000000000000000000000000000000000000000000000000000000001 : 2 }", SyntaxError);
+CheckStrictMode("var x = { \
+  123: 1, \
+  123.00000000000000000000000000000000000000000000000000000000000000000001: 2 \
+}", SyntaxError);
 
 // Non-conflicting data properties.
 (function StrictModeNonDuplicate() {
   "use strict";
   var x = { 123 : 1, "0123" : 2 };
-  var x = { 123: 1, '123.00000000000000000000000000000000000000000000000000000000000000000001' : 2 }
+  var x = {
+    123: 1,
+    '123.00000000000000000000000000000000000000000000000000000000000000000001':
+      2
+  };
 })();
 
 // Two getters (non-strict)
 assertThrows("var x = { get foo() { }, get foo() { } };", SyntaxError);
 assertThrows("var x = { get foo(){}, get 'foo'(){}};", SyntaxError);
 assertThrows("var x = { get 12(){}, get '12'(){}};", SyntaxError);
 
 // Two setters (non-strict)
 assertThrows("var x = { set foo(v) { }, set foo(v) { } };", SyntaxError);
 assertThrows("var x = { set foo(v) { }, set 'foo'(v) { } };", SyntaxError);
@@ skipping 18 matching lines @@
 assertThrows("var x = { get foo() { }, foo: 'data' };", SyntaxError);
 assertThrows("var x = { 'foo': 'data', get foo() { } };", SyntaxError);
 assertThrows("var x = { get 'foo'() { }, 'foo': 'data' };", SyntaxError);
 assertThrows("var x = { '12': 1, get '12'(){}};", SyntaxError);
 assertThrows("var x = { '12': 1, get 12(){}};", SyntaxError);
 
 // Assignment to eval or arguments
 CheckStrictMode("function strict() { eval = undefined; }", SyntaxError);
 CheckStrictMode("function strict() { arguments = undefined; }", SyntaxError);
 CheckStrictMode("function strict() { print(eval = undefined); }", SyntaxError);
-CheckStrictMode("function strict() { print(arguments = undefined); }", SyntaxError);
+CheckStrictMode("function strict() { print(arguments = undefined); }",
+                SyntaxError);
 CheckStrictMode("function strict() { var x = eval = undefined; }", SyntaxError);
-CheckStrictMode("function strict() { var x = arguments = undefined; }", SyntaxError);
+CheckStrictMode("function strict() { var x = arguments = undefined; }",
+                SyntaxError);
 
 // Compound assignment to eval or arguments
 CheckStrictMode("function strict() { eval *= undefined; }", SyntaxError);
 CheckStrictMode("function strict() { arguments /= undefined; }", SyntaxError);
 CheckStrictMode("function strict() { print(eval %= undefined); }", SyntaxError);
-CheckStrictMode("function strict() { print(arguments %= undefined); }", SyntaxError);
-CheckStrictMode("function strict() { var x = eval += undefined; }", SyntaxError);
-CheckStrictMode("function strict() { var x = arguments -= undefined; }", SyntaxError);
+CheckStrictMode("function strict() { print(arguments %= undefined); }",
+                SyntaxError);
+CheckStrictMode("function strict() { var x = eval += undefined; }",
+                SyntaxError);
+CheckStrictMode("function strict() { var x = arguments -= undefined; }",
+                SyntaxError);
 CheckStrictMode("function strict() { eval <<= undefined; }", SyntaxError);
 CheckStrictMode("function strict() { arguments >>= undefined; }", SyntaxError);
-CheckStrictMode("function strict() { print(eval >>>= undefined); }", SyntaxError);
-CheckStrictMode("function strict() { print(arguments &= undefined); }", SyntaxError);
-CheckStrictMode("function strict() { var x = eval ^= undefined; }", SyntaxError);
-CheckStrictMode("function strict() { var x = arguments |= undefined; }", SyntaxError);
+CheckStrictMode("function strict() { print(eval >>>= undefined); }",
+                SyntaxError);
+CheckStrictMode("function strict() { print(arguments &= undefined); }",
+                SyntaxError);
+CheckStrictMode("function strict() { var x = eval ^= undefined; }",
+                SyntaxError);
+CheckStrictMode("function strict() { var x = arguments |= undefined; }",
+                SyntaxError);
 
 // Postfix increment with eval or arguments
 CheckStrictMode("function strict() { eval++; }", SyntaxError);
 CheckStrictMode("function strict() { arguments++; }", SyntaxError);
 CheckStrictMode("function strict() { print(eval++); }", SyntaxError);
 CheckStrictMode("function strict() { print(arguments++); }", SyntaxError);
 CheckStrictMode("function strict() { var x = eval++; }", SyntaxError);
 CheckStrictMode("function strict() { var x = arguments++; }", SyntaxError);
 
 // Postfix decrement with eval or arguments
@@ skipping 13 matching lines @@
 CheckStrictMode("function strict() { var x = ++arguments; }", SyntaxError);
 
 // Prefix decrement with eval or arguments
 CheckStrictMode("function strict() { --eval; }", SyntaxError);
 CheckStrictMode("function strict() { --arguments; }", SyntaxError);
 CheckStrictMode("function strict() { print(--eval); }", SyntaxError);
 CheckStrictMode("function strict() { print(--arguments); }", SyntaxError);
 CheckStrictMode("function strict() { var x = --eval; }", SyntaxError);
 CheckStrictMode("function strict() { var x = --arguments; }", SyntaxError);
 
+// Delete of an unqialified identifier
+CheckStrictMode("delete unqualified;", SyntaxError);
+CheckStrictMode("function strict() { delete unqualified; }", SyntaxError);
+CheckStrictMode("function function_name() { delete function_name; }",
+                SyntaxError);
+CheckStrictMode("function strict(parameter) { delete parameter; }",
+                SyntaxError);
+CheckStrictMode("function strict() { var variable; delete variable; }",
+                SyntaxError);
+CheckStrictMode("var variable; delete variable;", SyntaxError);
+
 // Prefix unary operators other than delete, ++, -- are valid in strict mode
 (function StrictModeUnaryOperators() {
   "use strict";
   var x = [void eval, typeof eval, +eval, -eval, ~eval, !eval];
   var y = [void arguments, typeof arguments,
            +arguments, -arguments, ~arguments, !arguments];
 })();
 
 // 7.6.1.2 Future Reserved Words
 var future_reserved_words = [
@@ skipping 34 matching lines @@
   CheckStrictMode("function foo (" + word + ") {}", SyntaxError);
   CheckStrictMode("function foo (" + word + ", " + word + ") {}", SyntaxError);
   CheckStrictMode("function foo (a, " + word + ") {}", SyntaxError);
   CheckStrictMode("function foo (" + word + ", a) {}", SyntaxError);
   CheckStrictMode("function foo (a, " + word + ", b) {}", SyntaxError);
   CheckStrictMode("var foo = function (" + word + ") {}", SyntaxError);
 
   // Function names and arguments when the body is strict
   assertThrows("function " + word + " () { 'use strict'; }", SyntaxError);
   assertThrows("function foo (" + word + ")  'use strict'; {}", SyntaxError);
-  assertThrows("function foo (" + word + ", " + word + ") { 'use strict'; }", SyntaxError);
+  assertThrows("function foo (" + word + ", " + word + ") { 'use strict'; }",
+               SyntaxError);
   assertThrows("function foo (a, " + word + ") { 'use strict'; }", SyntaxError);
   assertThrows("function foo (" + word + ", a) { 'use strict'; }", SyntaxError);
-  assertThrows("function foo (a, " + word + ", b) { 'use strict'; }", SyntaxError);
-  assertThrows("var foo = function (" + word + ") { 'use strict'; }", SyntaxError);
+  assertThrows("function foo (a, " + word + ", b) { 'use strict'; }",
+               SyntaxError);
+  assertThrows("var foo = function (" + word + ") { 'use strict'; }",
+               SyntaxError);
 
   // get/set when the body is strict
   eval("var x = { get " + word + " () { 'use strict'; } };");
   eval("var x = { set " + word + " (value) { 'use strict'; } };");
-  assertThrows("var x = { get foo(" + word + ") { 'use strict'; } };", SyntaxError);
-  assertThrows("var x = { set foo(" + word + ") { 'use strict'; } };", SyntaxError);
+  assertThrows("var x = { get foo(" + word + ") { 'use strict'; } };",
+               SyntaxError);
+  assertThrows("var x = { set foo(" + word + ") { 'use strict'; } };",
+               SyntaxError);
 }
 
 for (var i = 0; i < future_reserved_words.length; i++) {
   testFutureReservedWord(future_reserved_words[i]);
 }
 
 function testAssignToUndefined(should_throw) {
   "use strict";
   try {
     possibly_undefined_variable_for_strict_mode_test = "should throw?";
@@ skipping 25 matching lines @@
  for (var i = 0; i < n; i ++) { f(); }
 }
 
 repeat(10, function() { testAssignToUndefined(true); });
 possibly_undefined_variable_for_strict_mode_test = "value";
 repeat(10, function() { testAssignToUndefined(false); });
 delete possibly_undefined_variable_for_strict_mode_test;
 repeat(10, function() { testAssignToUndefined(true); });
 possibly_undefined_variable_for_strict_mode_test = undefined;
 repeat(10, function() { testAssignToUndefined(false); });