Abort optimization when debugger is turned on.

src/compiler.cc

 // Copyright 2012 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 1040 matching lines @@
       isolate, Logger::TimerEventScope::v8_recompile_synchronous);
   // If crankshaft succeeded, install the optimized code else install
   // the unoptimized code.
   OptimizingCompiler::Status status = optimizing_compiler->last_status();
   if (info->HasAbortedDueToDependencyChange()) {
     info->set_bailout_reason("bailed out due to dependent map");
     status = optimizing_compiler->AbortOptimization();
   } else if (status != OptimizingCompiler::SUCCEEDED) {
     info->set_bailout_reason("failed/bailed out last time");
     status = optimizing_compiler->AbortOptimization();
+  } else if (isolate->debugger()->IsDebuggerActive()) {
+    info->set_bailout_reason("debugger is active");
+    status = optimizing_compiler->AbortOptimization();
   } else {
     status = optimizing_compiler->GenerateAndInstallCode();
     ASSERT(status == OptimizingCompiler::SUCCEEDED ||
            status == OptimizingCompiler::BAILED_OUT);
   }
 
   InstallCodeCommon(*info);
   if (status == OptimizingCompiler::SUCCEEDED) {
     Handle<Code> code = info->code();
     ASSERT(info->shared_info()->scope_info() != ScopeInfo::Empty(isolate));
@@ skipping 171 matching lines @@
 
 
 bool CompilationPhase::ShouldProduceTraceOutput() const {
   // Produce trace output if flag is set so that the first letter of the
   // phase name matches the command line parameter FLAG_trace_phase.
   return (FLAG_trace_hydrogen &&
           OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
 } }  // namespace v8::internal