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-rw-r--r--erts/emulator/beam/erl_process.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index e871a9834a..8f78a7d76e 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1592,7 +1592,9 @@ ERTS_GLB_INLINE void erts_sched_poke(ErtsSchedulerSleepInfo *ssi);
ERTS_GLB_INLINE void
erts_sched_poke(ErtsSchedulerSleepInfo *ssi)
{
- erts_aint32_t flags = erts_smp_atomic32_read(&ssi->flags);
+ erts_aint32_t flags;
+ ERTS_THR_MEMORY_BARRIER;
+ flags = erts_smp_atomic32_read(&ssi->flags);
ASSERT(!(flags & ERTS_SSI_FLG_SLEEPING)
|| (flags & ERTS_SSI_FLG_WAITING));
if (flags & ERTS_SSI_FLG_SLEEPING) {