fix gdbjit

src/mark-compact.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 759 matching lines @@
   // variable.
   tracer_ = tracer;
 
 #ifdef DEBUG
   ASSERT(state_ == IDLE);
   state_ = PREPARE_GC;
 #endif
 
   ASSERT(!FLAG_never_compact || !FLAG_always_compact);
 
-#ifdef ENABLE_GDB_JIT_INTERFACE
-  if (FLAG_gdbjit) {
-    // If GDBJIT interface is active disable compaction.
-    compacting_collection_ = false;
-  }
-#endif
-
   // Clear marking bits if incremental marking is aborted.
   if (was_marked_incrementally_ && abort_incremental_marking_) {
     heap()->incremental_marking()->Abort();
     ClearMarkbits();
     AbortCompaction();
     was_marked_incrementally_ = false;
   }
 
+  bool never_compact = FLAG_never_compact;
+
+#ifdef ENABLE_GDB_JIT_INTERFACE
+  never_compact = never_compact || FLAG_gdbjit;
+#endif
+
   // 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_) {
+  if (!never_compact && !was_marked_incrementally_) {
     StartCompaction(NON_INCREMENTAL_COMPACTION);
   }
 
   PagedSpaces spaces;
   for (PagedSpace* space = spaces.next();
        space != NULL;
        space = spaces.next()) {
     space->PrepareForMarkCompact();
   }
 
@@ skipping 3334 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal