mirror of https://github.com/OpenTTD/OpenTTD.git
Fix: Violation of strict weak ordering in engine name sorter
This could be caused by an engine being renamed, and the old name being cached from a previous sort. See: #7838
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084b073e57
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d830a34394
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@ -125,6 +125,9 @@ static bool EngineIntroDateSorter(const EngineID &a, const EngineID &b)
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return _engine_sort_direction ? r > 0 : r < 0;
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}
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/* cached values for EngineNameSorter to spare many GetString() calls */
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static EngineID _last_engine[2] = { INVALID_ENGINE, INVALID_ENGINE };
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/**
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* Determines order of engines by name
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* @param a first engine to compare
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@ -133,17 +136,16 @@ static bool EngineIntroDateSorter(const EngineID &a, const EngineID &b)
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*/
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static bool EngineNameSorter(const EngineID &a, const EngineID &b)
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{
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static EngineID last_engine[2] = { INVALID_ENGINE, INVALID_ENGINE };
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static char last_name[2][64] = { "\0", "\0" };
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static char last_name[2][64] = { "", "" };
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if (a != last_engine[0]) {
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last_engine[0] = a;
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if (a != _last_engine[0]) {
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_last_engine[0] = a;
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SetDParam(0, a);
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GetString(last_name[0], STR_ENGINE_NAME, lastof(last_name[0]));
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}
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if (b != last_engine[1]) {
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last_engine[1] = b;
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if (b != _last_engine[1]) {
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_last_engine[1] = b;
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SetDParam(0, b);
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GetString(last_name[1], STR_ENGINE_NAME, lastof(last_name[1]));
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}
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@ -1292,6 +1294,9 @@ struct BuildVehicleWindow : Window {
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this->SelectEngine(sel_id);
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/* invalidate cached values for name sorter - engine names could change */
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_last_engine[0] = _last_engine[1] = INVALID_ENGINE;
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/* make engines first, and then wagons, sorted by selected sort_criteria */
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_engine_sort_direction = false;
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EngList_Sort(&this->eng_list, TrainEnginesThenWagonsSorter);
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