FIX #2164: check for ThreadRelocated in isAlive()

diff --git a/rts/sm/GCAux.c b/rts/sm/GCAux.c
index 825d0f9..48179f7 100644 (file)
--- a/rts/sm/GCAux.c
+++ b/rts/sm/GCAux.c
@@ -62,6 +62,11 @@ isAlive(StgClosure *p)
 
     // large objects use the evacuated flag
     if (bd->flags & BF_LARGE) {
+        if (get_itbl(q)->type == TSO &&
+            ((StgTSO *)p)->what_next == ThreadRelocated) {
+            p = (StgClosure *)((StgTSO *)p)->_link;
+            continue;
+        }
        return NULL;
     }