harmony-scoping: Allow 'const' iteration variables in strict mode.

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 700d104a51a396bfb11ba922e777b373e573fedc..ee6ff27ef5027a2344ae77ebfabf40eb2979dcad 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -4205,3 +4205,34 @@ TEST(ObjectLiteralPropertyShorthandYieldInGeneratorError) {
   RunParserSyncTest(context_data, name_data, kError, NULL, 0,
                     always_flags, arraysize(always_flags));
 }
+
+
+TEST(ConstParsingInForIn) {
+  const char* context_data[][2] = {{"'use strict';", ""},
+                                   {"function foo(){ 'use strict';", "}"},
+                                   {NULL, NULL}};
+
+  const char* data[] = {"for(const x = 1; ; ) {}", "for(const x in [1,2,3]) {}",

[rossberg, 2014/10/23 09:44:54]

Add a case like "for (const x = 1, y = 2; ; )".

[Dmitry Lomov (no reviews), 2014/10/23 10:33:34]

Done.

+                        "for(const x of [1,2,3]) {}", NULL};
+  static const ParserFlag always_flags[] = {kAllowHarmonyScoping};
+  RunParserSyncTest(context_data, data, kSuccess, NULL, 0, always_flags,
+                    arraysize(always_flags));
+}
+
+
+TEST(ConstParsingInForInError) {
+  const char* context_data[][2] = {{"'use strict';", ""},
+                                   {"function foo(){ 'use strict';", "}"},
+                                   {NULL, NULL}};
+
+  const char* data[] = {
+      "for(const x,y = 1; ; ) {}",
+      "for(const x = 4 in [1,2,3]) {}",
+      "for(const x = 4, y in [1,2,3]) {}",
+      "for(const x = 4 of [1,2,3]) {}",
+      "for(const x = 4, y of [1,2,3]) {}",

[rossberg, 2014/10/23 09:44:54]

Add "for (const x, y in/of [])".

[Dmitry Lomov (no reviews), 2014/10/23 10:33:34]

Done.

+      NULL};
+  static const ParserFlag always_flags[] = {kAllowHarmonyScoping};
+  RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
+                    arraysize(always_flags));
+}