diff options
| -rw-r--r-- | unix/modos.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/unix/modos.c b/unix/modos.c index 94f9a5723d..b4af796123 100644 --- a/unix/modos.c +++ b/unix/modos.c @@ -137,6 +137,9 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_os_system_obj, mod_os_system); STATIC mp_obj_t mod_os_getenv(mp_obj_t var_in) { const char *s = getenv(mp_obj_str_get_str(var_in)); + if (s == NULL) { + return mp_const_none; + } return mp_obj_new_str(s, strlen(s), false); } STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_os_getenv_obj, mod_os_getenv); |