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-rw-r--r--rts/sm/GCThread.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/rts/sm/GCThread.h b/rts/sm/GCThread.h
index b4f325631f..60f721285d 100644
--- a/rts/sm/GCThread.h
+++ b/rts/sm/GCThread.h
@@ -125,6 +125,7 @@ typedef struct gc_thread_ {
volatile rtsBool wakeup;
#endif
nat thread_index; // a zero based index identifying the thread
+ rtsBool idle; // sitting out of this GC cycle
bdescr * free_blocks; // a buffer of free blocks for this thread
// during GC without accessing the block