Breakpoint position should be inside function body.

src/codegen.cc

 // Copyright 2009 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 415 matching lines @@
   return false;
 }
 
 
 void CodeGenerator::CodeForFunctionPosition(FunctionLiteral* fun) {
   if (FLAG_debug_info) RecordPositions(masm(), fun->start_position(), false);
 }
 
 
 void CodeGenerator::CodeForReturnPosition(FunctionLiteral* fun) {
-  if (FLAG_debug_info) RecordPositions(masm(), fun->end_position(), false);
+  if (FLAG_debug_info) RecordPositions(masm(), fun->end_position() - 1, false);
 }
 
 
 void CodeGenerator::CodeForStatementPosition(Statement* stmt) {
   if (FLAG_debug_info) RecordPositions(masm(), stmt->statement_pos(), false);
 }
 
 
 void CodeGenerator::CodeForDoWhileConditionPosition(DoWhileStatement* stmt) {
   if (FLAG_debug_info)
@@ skipping 60 matching lines @@
   }
 }
 
 
 void ApiGetterEntryStub::SetCustomCache(Code* value) {
   info()->set_load_stub_cache(value);
 }
 
 
 } }  // namespace v8::internal