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-rw-r--r--rts/sm/Sanity.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/rts/sm/Sanity.c b/rts/sm/Sanity.c
index a2cdfc0687..44af5926d2 100644
--- a/rts/sm/Sanity.c
+++ b/rts/sm/Sanity.c
@@ -531,7 +531,9 @@ checkTSO(StgTSO *tso)
return;
}
- ASSERT(tso->_link == END_TSO_QUEUE || get_itbl(tso->_link)->type == TSO);
+ ASSERT(tso->_link == END_TSO_QUEUE ||
+ tso->_link->header.info == &stg_MVAR_TSO_QUEUE_info ||
+ tso->_link->header.info == &stg_TSO_info);
ASSERT(LOOKS_LIKE_CLOSURE_PTR(tso->block_info.closure));
ASSERT(LOOKS_LIKE_CLOSURE_PTR(tso->bq));
ASSERT(LOOKS_LIKE_CLOSURE_PTR(tso->blocked_exceptions));