[sgen] Fix a concurrent sweep bug.

diff --git a/mono/metadata/sgen-marksweep.c b/mono/metadata/sgen-marksweep.c
index 90a9a84c8c0f4ab994b322894ee605dbd0200a58..bd2d3bbbbcf946e218802a4996f4f923e7d26b9a 100644 (file)
--- a/mono/metadata/sgen-marksweep.c
+++ b/mono/metadata/sgen-marksweep.c
@@ -1752,7 +1752,7 @@ major_start_major_collection (void)
        MSBlockInfo *block;
        int i;
 
-       SGEN_ASSERT (0, sweep_state == SWEEP_STATE_SWEPT, "Major collection on unswept heap");
+       major_finish_sweep_checking ();
 
        /*
         * Clear the free lists for block sizes where we do evacuation.  For those block