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-rw-r--r--rts/sm/Scav.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/rts/sm/Scav.c b/rts/sm/Scav.c
index a36ebbb331..b121c010ca 100644
--- a/rts/sm/Scav.c
+++ b/rts/sm/Scav.c
@@ -1858,7 +1858,7 @@ scavenge_stack(StgPtr p, StgPtr stack_end)
case UPDATE_FRAME:
// Note [upd-black-hole]
- //
+ // ~~~~~~~~~~~~~~~~~~~~~
// In SMP, we can get update frames that point to indirections
// when two threads evaluate the same thunk. We do attempt to
// discover this situation in threadPaused(), but it's