Fix for gdbjit.

src/mark-compact.cc

 // 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 465 matching lines @@
   // variable.
   tracer_ = tracer;
 
 #ifdef DEBUG
   ASSERT(state_ == IDLE);
   state_ = PREPARE_GC;
 #endif
   ASSERT(!FLAG_always_compact || !FLAG_never_compact);
 
   if (collect_maps_) CreateBackPointers();
+  bool gdbjit = false;
 #ifdef ENABLE_GDB_JIT_INTERFACE
   if (FLAG_gdbjit) {
     // If GDBJIT interface is active disable compaction.
-    compacting_collection_ = false;
+    gdbjit = true;

[Vyacheslav Egorov (Chromium), 2011/09/23 09:27:55]

lets instead do 

never_compact = true;
sweep_precise_ = true; 

here.

   }
 #endif
 
   // Clear marking bits for precise sweeping to collect all garbage.
-  if (was_marked_incrementally_ && PreciseSweepingRequired()) {
+  if ((was_marked_incrementally_ && PreciseSweepingRequired()) || gdbjit) {
     heap()->incremental_marking()->Abort();
     ClearMarkbits(heap_);
     AbortCompaction();
     was_marked_incrementally_ = false;
   }
 
   // Don't start compaction if we are in the middle of incremental
   // marking cycle. We did not collect any slots.
   if (!FLAG_never_compact && !was_marked_incrementally_) {
     StartCompaction();
@@ skipping 3313 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal