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-rw-r--r--erts/emulator/sys/common/erl_check_io.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c
index 79f567d16c..5f4eca68d0 100644
--- a/erts/emulator/sys/common/erl_check_io.c
+++ b/erts/emulator/sys/common/erl_check_io.c
@@ -1224,6 +1224,8 @@ ERTS_CIO_EXPORT(enif_select)(ErlNifEnv* env,
DTRACE_CHARBUF(name, 64);
#endif
+ ASSERT(!resource->dbg_is_dying);
+
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
if ((unsigned)fd >= (unsigned)erts_smp_atomic_read_nob(&drv_ev_state_len)) {
if (fd < 0) {