#46176: Segfault from dai_hunter_manage
Open Date: 2022-12-03 21:15
Last Update: 2022-12-03 22:14
URL for this Ticket:
https://osdn.net//projects/freeciv/ticket/46176
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Last Changes/Comment on this Ticket:
2022-12-03 22:14 Updated by: cazfi
Comment:
Reply To cazfi
S3_0 version applies to S2_6 too.
Well, applied, but didn't compile. Separate S2_6 version attached.
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Ticket Status:
Reporter: lexxie9952
Owner: cazfi
Type: Bugs
Status: Open [Owner assigned]
Priority: 5 - Medium
MileStone: 3.0.5
Component: AI
Severity: 5 - Medium
Resolution: Accepted
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Ticket details:
Segfault in FCW server appears to have possibility for same issue in upstream server.
blamed: dai_hunter_manage() called unit_win_chance() with a null pdefender
stack trace:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 get_defense_power (punit=0x0) at ../../freeciv/common/combat.c:550
550 struct tile *ptile = unit_tile(punit);
[Current thread is 1 (Thread 0x7f67c4151800 (LWP 26778))]
#0 get_defense_power (punit=0x0) at ../../freeciv/common/combat.c:550
#1 get_total_defense_power (defender=0x0, attacker=0x55fc042954f0)
at ../../freeciv/common/combat.c:710
#2 unit_win_chance (attacker=attacker at entry=0x55fc042954f0, defender=0x0)
at ../../freeciv/common/combat.c:409
#3 0x000055fc0158dba5 in dai_hunter_manage (ait=ait at entry=0x55fc01ba4640 <ai_types>,
pplayer=pplayer at entry=0x55fc05c60dd0, punit=punit at entry=0x55fc042954f0)
at ../../../freeciv/ai/default/aihunt.c:523
#4 0x000055fc0158e5eb in eval_hunter_want (veteran=<optimized out>,
best_type=0x55fc02345730 <unit_types+115920>, choice=0x55fc043d6f30,
pcity=0x55fc05e5edf0, pplayer=0x55fc05c60dd0, ait=0x55fc01ba4640 <ai_types>)
at ../../../freeciv/ai/default/aihunt.c:243
#5 dai_hunter_choice (ait=ait at entry=0x55fc01ba4640 <ai_types>,
pplayer=pplayer at entry=0x55fc05c60dd0, pcity=pcity at entry=0x55fc05e5edf0,
choice=choice at entry=0x55fc043d6f30, allow_gold_upkeep=allow_gold_upkeep at entry=true)
at ../../../freeciv/ai/default/aihunt.c:280
#6 0x000055fc015858ff in military_advisor_choose_build (
ait=ait at entry=0x55fc01ba4640 <ai_types>, pplayer=pplayer at entry=0x55fc05c60dd0,
pcity=pcity at entry=0x55fc05e5edf0, mamap=<optimized out>, ul_cb=ul_cb at entry=0x0)
at ../../../freeciv/ai/default/daimilitary.c:1677
#7 0x000055fc015764f9 in dai_manage_cities (ait=ait at entry=0x55fc01ba4640 <ai_types>,
pplayer=pplayer at entry=0x55fc05c60dd0) at ../../../freeciv/ai/default/daicity.c:884
#8 0x000055fc01561d3f in dai_do_last_activities (ait=0x55fc01ba4640 <ai_types>,
pplayer=<optimized out>) at ../../../freeciv/ai/default/aihand.c:772
#9 0x000055fc01424800 in end_phase () at ../../freeciv/server/srv_main.c:1531
#10 srv_running () at ../../freeciv/server/srv_main.c:3046
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