ES6: Add support for explicit octal and binary integer literals

src/runtime.cc

 // Copyright 2012 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 5941 matching lines @@
         ASSERT_EQ(static_cast<int>(subject->hash_field()),
                   static_cast<int>(hash));
 #endif
         subject->set_hash_field(hash);
       }
       return Smi::FromInt(d);
     }
   }
 
   // Slower case.
+  int flags = ALLOW_HEX;
+  if (FLAG_harmony_numeric_literals) {
+    // The current spec draft has not updated "ToNumber Applied to the String
+    // Type", https://bugs.ecmascript.org/show_bug.cgi?id=1584
+    flags |= ALLOW_OCTAL | ALLOW_BINARY;
+  }
   return isolate->heap()->NumberFromDouble(
-      StringToDouble(isolate->unicode_cache(), subject, ALLOW_HEX));
+      StringToDouble(isolate->unicode_cache(), subject, flags));
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_NewString) {
   SealHandleScope shs(isolate);
   CONVERT_SMI_ARG_CHECKED(length, 0);
   CONVERT_BOOLEAN_ARG_CHECKED(is_one_byte, 1);
   if (length == 0) return isolate->heap()->empty_string();
   if (is_one_byte) {
     return isolate->heap()->AllocateRawOneByteString(length);
@@ skipping 8011 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal