Ensure hole checks take place in switch statement scopes

src/parser.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/parser.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/ast-literal-reindexer.h"
 #include "src/bailout-reason.h"
@@ skipping 2992 matching lines @@
   Assignment* tag_assign = factory()->NewAssignment(
       Token::ASSIGN, factory()->NewVariableProxy(tag_variable), tag,
       tag->position());
   Statement* tag_statement =
       factory()->NewExpressionStatement(tag_assign, RelocInfo::kNoPosition);
   switch_block->AddStatement(tag_statement, zone());
 
   Block* cases_block =
       factory()->NewBlock(NULL, 1, true, RelocInfo::kNoPosition);
   Scope* cases_scope = NewScope(scope_, BLOCK_SCOPE);
+  cases_scope->SetNonlinear();
 
   SwitchStatement* switch_statement =
       factory()->NewSwitchStatement(labels, switch_pos);
 
   cases_scope->set_start_position(scanner()->location().beg_pos);
   {
     BlockState cases_block_state(&scope_, cases_scope);
     Target target(&this->target_stack_, switch_statement);
 
     Expression* tag_read = factory()->NewVariableProxy(tag_variable);
@@ skipping 3083 matching lines @@
 
 Expression* Parser::SpreadCallNew(Expression* function,
                                   ZoneList<v8::internal::Expression*>* args,
                                   int pos) {
   args->InsertAt(0, function, zone());
 
   return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args, pos);
 }
 }  // namespace internal
 }  // namespace v8