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IDProjectCategoryView StatusLast Update
0013319Dwarf FortressGeneralpublic2025-11-02 18:27
ReporterBeardy Assigned To 
PrioritylowSeveritycrashReproducibilityunable to reproduce
Status newResolutionopen 
PlatformSteamOSWindows 11 ProOS Version24H2
Product Version52.05 
Summary0013319: Possible crash due to daylight savings time change
DescriptionDuring normal play, the game crashed immediately when the system clock automatically adjusted from EST (Eastern Standard Time) to EDT (Eastern Daylight Time) which caused a time change from 1:59AM to 1:00AM. This could technically be coincidental, but I have not had any crashes prior to this. I am not sure whether it's actually possible to test this by changing the system clock manually.
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Ziusudra

2025-11-02 02:25

reporter   ~0042953

check for a folder called crashlogs in the main DF folder, which by default is at C:\Program Files (x86)\Steam\steamapps\common\Dwarf Fortress, if there's a file with the right date, please share the contents

Beardy

2025-11-02 11:44

reporter   ~0042954

These are the full contents of "crash_2025-11-02-01-59-28.txt":

Fortress mode Version 52.05
0> Dwarf_Fortress+0xA95D96
1> Dwarf_Fortress+0xA95F39
2> KERNELBASE!UnhandledExceptionFilter+0x1F3
3> ntdll!strncpy+0x2693
4> ntdll!_C_specific_handler+0x93
5> ntdll!_chkstk+0x9F
6> ntdll!RtlLocateExtendedFeature+0x597
7> ntdll!KiUserExceptionDispatcher+0x2E
8> Dwarf_Fortress+0x13D9B13
9> Dwarf_Fortress+0x8921FE
10> Dwarf_Fortress+0x88A448
11> Dwarf_Fortress+0xBF72B5
12> Dwarf_Fortress+0x8B85E3
13> Dwarf_Fortress+0x8B9AE9
14> SDL2!SDL_DYNAPI_entry+0x799D7
15> SDL2!SDL_DYNAPI_entry+0x12EEDE
16> ucrtbase!wcsrchr+0x150
17> KERNEL32!BaseThreadInitThunk+0x17
18> ntdll!RtlUserThreadStart+0x2C
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Ziusudra

2025-11-02 18:27

reporter   ~0042955

The time on the file name shows it was just before the time change, and the code gurus say that code uses a different time source any way. So it was a coincidence, but that means you got hit by a random bug that corrupts data, which they havn't yet tracked down the cause of.

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Issue History

Date Modified Username Field Change
2025-11-01 23:19 Beardy New Issue
2025-11-02 02:25 Ziusudra Note Added: 0042953
2025-11-02 11:44 Beardy Note Added: 0042954
2025-11-02 18:27 Ziusudra Note Added: 0042955