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-rw-r--r--rts/Threads.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/rts/Threads.c b/rts/Threads.c
index b550cc6aaa..f6c28007e9 100644
--- a/rts/Threads.c
+++ b/rts/Threads.c
@@ -485,7 +485,7 @@ unblockOne_ (Capability *cap, StgTSO *tso,
{
StgTSO *next;
- ASSERT(get_itbl(tso)->type == TSO);
+ // NO, might be a WHITEHOLE: ASSERT(get_itbl(tso)->type == TSO);
ASSERT(tso->why_blocked != NotBlocked);
tso->why_blocked = NotBlocked;