Fix spread operator in ArrayLiterals when nested in other literals

src/ast.cc

 // Copyright 2012 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.
 
 #include "src/ast.h"
 
 #include <cmath>  // For isfinite.
 #include "src/builtins.h"
 #include "src/code-stubs.h"
 #include "src/contexts.h"
@@ skipping 538 matching lines @@
 
   int constants_length =
       first_spread_index_ >= 0 ? first_spread_index_ : values()->length();
 
   // Allocate a fixed array to hold all the object literals.
   Handle<JSArray> array = isolate->factory()->NewJSArray(
       FAST_HOLEY_SMI_ELEMENTS, constants_length, constants_length,
       Strength::WEAK, INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE);
 
   // Fill in the literals.
-  bool is_simple = true;
+  bool is_simple = (first_spread_index_ < 0);
   int depth_acc = 1;
   bool is_holey = false;
   int array_index = 0;
   for (; array_index < constants_length; array_index++) {
     Expression* element = values()->at(array_index);
     DCHECK(!element->IsSpread());
     MaterializedLiteral* m_literal = element->AsMaterializedLiteral();
     if (m_literal != NULL) {
       m_literal->BuildConstants(isolate);
       if (m_literal->depth() + 1 > depth_acc) {
@@ skipping 617 matching lines @@
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && x->AsString() == y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
 }  // namespace internal
 }  // namespace v8