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-rw-r--r--erts/emulator/beam/io.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 3fc124589b..be094862d4 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -434,7 +434,7 @@ erts_port_cleanup(Port *prt)
void
erts_port_free(Port *prt)
{
-#if defined(ERTS_SMP) || defined(ERTS_ENABLE_LOCK_CHECK)
+#if defined(ERTS_SMP) || defined(DEBUG) || defined(ERTS_ENABLE_LOCK_CHECK)
erts_aint32_t state = erts_atomic32_read_nob(&prt->state);
#endif
ERTS_LC_ASSERT(state & (ERTS_PORT_SFLG_INITIALIZING