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-rw-r--r--erts/emulator/beam/erl_thr_progress.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_thr_progress.c b/erts/emulator/beam/erl_thr_progress.c
index 3b2f95d43b..9678d7e08b 100644
--- a/erts/emulator/beam/erl_thr_progress.c
+++ b/erts/emulator/beam/erl_thr_progress.c
@@ -475,6 +475,9 @@ erts_thr_progress_init(int no_schedulers, int managed, int unmanaged)
intrnl->misc.data.umrefc_ix.waiting = -1;
erts_atomic32_init_nob(&intrnl->misc.data.umrefc_ix.current, 0);
+ erts_atomic_init_nob(&intrnl->umrefc[0].refc, (erts_aint_t) 0);
+ erts_atomic_init_nob(&intrnl->umrefc[1].refc, (erts_aint_t) 0);
+
intrnl->thr = (ErtsThrPrgrArray *) ptr;
ptr += thr_arr_sz;
for (i = 0; i < managed; i++)