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Fix #2251: possible crash when AI invokes attack prediction

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Jyrki Vesterinen 2017-11-28 21:38:56 +02:00
parent a593e9753f
commit f62b62b700
1 changed files with 2 additions and 1 deletions
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3
src/attack_prediction.cpp
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@ -1763,7 +1763,8 @@ double calculate_probability_of_debuff(double initial_prob, bool enemy_gives, do
{
assert(initial_prob >= 0.0 && initial_prob <= 1.0);
assert(prob_touched >= 0.0 && prob_touched <= 1.0);
assert(prob_stay_alive >= 0.0 && prob_stay_alive <= 1.0);
// Prob_stay_alive can get slightly negative because of a rounding error, so ensure that it gets non-negative.
prob_stay_alive = std::max(prob_stay_alive, 0.0);
// Prob_kill can creep a bit above 100 % if the AI simulates an unit being attacked by multiple units in a row, due to rounding error.
// Simply limit it to suitable range.
prob_kill = std::min(prob_kill, 1.0);