Allocators for map<K, V> need to allocate pair<const K, V>.

src/compiler/instruction.h

 // 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.
 
 #ifndef V8_COMPILER_INSTRUCTION_H_
 #define V8_COMPILER_INSTRUCTION_H_
 
 #include <deque>
 #include <iosfwd>
 #include <map>
@@ skipping 1065 matching lines @@
   const bool deferred_;  // Block contains deferred code.
   const bool handler_;   // Block is a handler entry point.
   bool needs_frame_;
   bool must_construct_frame_;
   bool must_deconstruct_frame_;
   RpoNumber last_deferred_;
 };
 
 typedef ZoneDeque<Constant> ConstantDeque;
 typedef std::map<int, Constant, std::less<int>,
-                 zone_allocator<std::pair<int, Constant> > > ConstantMap;
+                 zone_allocator<std::pair<const int, Constant> > > ConstantMap;
 
 typedef ZoneDeque<Instruction*> InstructionDeque;
 typedef ZoneDeque<ReferenceMap*> ReferenceMapDeque;
 typedef ZoneVector<FrameStateDescriptor*> DeoptimizationVector;
 typedef ZoneVector<InstructionBlock*> InstructionBlocks;
 
 struct PrintableInstructionSequence;
 
 
 // Represents architecture-specific generated code before, during, and after
@@ skipping 180 matching lines @@
 
 
 std::ostream& operator<<(std::ostream& os,
                          const PrintableInstructionSequence& code);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_H_