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-rw-r--r--erts/emulator/beam/io.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index b23b1f628d..3deb386621 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -425,6 +425,7 @@ setup_port(Port* prt, Eterm pid, erts_driver_t *driver,
sys_strcpy(new_name, name);
erts_smp_runq_lock(runq);
erts_smp_port_state_lock(prt);
+ prt->os_pid = -1;
prt->status = ERTS_PORT_SFLG_CONNECTED | xstatus;
prt->snapshot = erts_smp_atomic32_read_nob(&erts_ports_snapshot);
old_name = prt->name;