Fix build with GCC 4.7, which fails with "narrowing conversion of

src/full-codegen.h

 // Copyright 2011 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 372 matching lines @@
                                 Expression* sub_expr,
                                 Handle<String> check);
 
   // Platform-specific code for equality comparison with a nil-like value.
   void EmitLiteralCompareNil(CompareOperation* expr,
                              Expression* sub_expr,
                              NilValue nil);
 
   // Bailout support.
   void PrepareForBailout(Expression* node, State state);
-  void PrepareForBailoutForId(int id, State state);
+  void PrepareForBailoutForId(unsigned id, State state);

[Steven, 2011/11/30 17:50:42]

Indeed the ast node ids are represented by an 'unsigned'
everywhere else.

 
   // Record a call's return site offset, used to rebuild the frame if the
   // called function was inlined at the site.
   void RecordJSReturnSite(Call* call);
 
   // Prepare for bailout before a test (or compare) and branch.  If
   // should_normalize, then the following comparison will not handle the
   // canonical JS true value so we will insert a (dead) test against true at
   // the actual bailout target from the optimized code. If not
   // should_normalize, the true and false labels are ignored.
   void PrepareForBailoutBeforeSplit(Expression* expr,
                                     bool should_normalize,
                                     Label* if_true,
                                     Label* if_false);
 
   // Platform-specific code for a variable, constant, or function
   // declaration.  Functions have an initial value.
   void EmitDeclaration(VariableProxy* proxy,
                        VariableMode mode,
                        FunctionLiteral* function,
                        int* global_count);
 
   // Platform-specific code for checking the stack limit at the back edge of
   // a loop.
   void EmitStackCheck(IterationStatement* stmt);
   // Record the OSR AST id corresponding to a stack check in the code.
-  void RecordStackCheck(int osr_ast_id);
+  void RecordStackCheck(unsigned osr_ast_id);
   // Emit a table of stack check ids and pcs into the code stream.  Return
   // the offset of the start of the table.
   unsigned EmitStackCheckTable();
 
   // Platform-specific return sequence
   void EmitReturnSequence();
 
   // Platform-specific code sequences for calls
   void EmitCallWithStub(Call* expr, CallFunctionFlags flags);
   void EmitCallWithIC(Call* expr, Handle<Object> name, RelocInfo::Mode mode);
@@ skipping 330 matching lines @@
 
   friend class NestedStatement;
 
   DISALLOW_COPY_AND_ASSIGN(FullCodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_