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py/builtinhelp: Don't show help for an MP_MODULE_ATTR_DELEGATION_ENTRY.

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Otherwise it can lead to a crash.

Fixes issue #8816.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2022-06-28 16:31:43 +10:00
parent e024a4c59c
commit 6e83bb47eb
1 changed files with 8 additions and 2 deletions
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10
py/builtinhelp.c
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@ -149,8 +149,14 @@ STATIC void mp_help_print_obj(const mp_obj_t obj) {
} }
if (map != NULL) { if (map != NULL) {
for (uint i = 0; i < map->alloc; i++) { for (uint i = 0; i < map->alloc; i++) {
if (map->table[i].key != MP_OBJ_NULL) { mp_obj_t key = map->table[i].key;
mp_help_print_info_about_object(map->table[i].key, map->table[i].value); if (key != MP_OBJ_NULL
#if MICROPY_MODULE_ATTR_DELEGATION
// MP_MODULE_ATTR_DELEGATION_ENTRY entries have MP_QSTRnull as qstr key.
&& key != MP_OBJ_NEW_QSTR(MP_QSTRnull)
#endif
) {
mp_help_print_info_about_object(key, map->table[i].value);
} }
} }
} }