#45893: city_create_unit() segfaults when punit is null
Open Date: 2022-10-17 20:58
Last Update: 2022-10-17 20:58
URL for this Ticket:
https://osdn.net//projects/freeciv/ticket/45893
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=12505&tid=45893
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2022-10-17 20:58 Updated by: Anonymous
* New Ticket "city_create_unit() segfaults when punit is null" created
---------------------------------------------------------------------
Ticket Status:
Reporter: (Anonymous)
Owner: (None)
Type: Bugs
Status: Open
Priority: 5 - Medium
MileStone: (None)
Component: (None)
Severity: 5 - Medium
Resolution: None
---------------------------------------------------------------------
Ticket details:
This wasn't caught before because it's very rare. However, there may be ways to get units which are null in some situations like multiple build slots, etc. FCW server experienced it and had to fix it.
static struct unit *city_create_unit(struct city *pcity, const struct unit_type *utype) { if (!pcity || !utype) return NULL; // 17Oct2022 attempt to avoid segfault struct player *pplayer = city_owner(pcity); struct unit *punit; int saved_unit_id; city_production_unit_veteran_level(pcity, utype), pcity->id, 0); pplayer->score.units_built++; if (!punit) { notify_conn(game.est_connections, city_tile(pcity), E_WONDER_WILL_BE_BUILT, ftc_server, _("Notice: %s in %s creating illegal segfault. Report to admin immediately!"), utype_name_translation(utype), city_link(pcity)); return NULL; // 17Oct2022 line below was segfault: } saved_unit_id = punit->id;
--
Ticket information of Freeciv project
Freeciv Project is hosted on OSDN
Project URL: https://osdn.net/projects/freeciv/
OSDN: https://osdn.net
URL for this Ticket:
https://osdn.net/projects/freeciv/ticket/45893
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=12505&tid=45893