Fix a regression introduced in "overlap checking of the black hole queue..."

We weren't checking the black-hole queue in the non-threaded RTS.

diff --git a/rts/Schedule.c b/rts/Schedule.c
index 167cac1..539e006 100644 (file)
--- a/rts/Schedule.c
+++ b/rts/Schedule.c
@@ -1454,6 +1454,12 @@ scheduleDoGC (Capability *cap, Task *task USED_IF_THREADS, rtsBool force_major)
         // GC thread each.
         waitForGcThreads(cap);
     }
         // GC thread each.
         waitForGcThreads(cap);
     }

+
+#else /* !THREADED_RTS */
+
+    // do this while the other Capabilities stop:
+    if (cap) scheduleCheckBlackHoles(cap);
+

 #endif
 
     IF_DEBUG(scheduler, printAllThreads());
 #endif
 
     IF_DEBUG(scheduler, printAllThreads());