[strong] no sloppy equality

test/mjsunit/strong/equality.js

+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --strong-mode
+
+(function NoSloppyEquality() {
+  assertThrows("'use strong'; 0 == 0", SyntaxError);
+  assertThrows("'use strong'; 0 != 0", SyntaxError);
+  assertThrows("function f() { 'use strong'; 0 == 0 }", SyntaxError);
+  assertThrows("function f() { 'use strong'; 0 != 0 }", SyntaxError);
+  assertTrue(eval("function f() { 'use strong' } 0 == 0"));
+  assertTrue(eval("function f() { 'use strong' } 0 != 1"));

[marja, 2015/02/12 09:59:37]

Some of these could theoretically be parser sync tests in test-parsing.cc, but
it's not super interesting since those parts of parser / preparser are already
unified.

+})();