Error while clicking on tittle bar

[SPancerfaustyna]

So i was making my first window and i found anoying error while trying to move the window with the mouse. Error is always appearing while trying to click on title bar of the window. I check every example you posted and it also is appearing. On official version this is not present.

Zig version - 0.14.0

D:\ZigProjects\snake\zig-out\bin>snake.exe
thread 13296 panic: left shift of negative value -13
C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\video\windows\SDL_windowsevents.c:1643:0: 0x7ff766e40cd6 in WIN_WindowProc (SDL3.lib)
PostMessage(hwnd, WM_MOUSEMOVE, 0, cursorPos.x | cursorPos.y << 16);

???:?:?: 0x7ffdd85152a0 in ??? (USER32.dll)
???:?:?: 0x7ffdd8512e0c in ??? (USER32.dll)
C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\video\windows\SDL_windowsevents.c:2539:0: 0x7ff766e50d8f in WIN_PumpEvents (SDL3.lib)
DispatchMessage(&msg);

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\events\SDL_events.c:1453:0: 0x7ff766c2c099 in SDL_PumpEventsInternal (SDL3.lib)
_this->PumpEvents(_this);

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\events\SDL_events.c:1475:0: 0x7ff766c2bfd0 in SDL_PumpEvents_REAL (SDL3.lib)
SDL_PumpEventsInternal(false);

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\main\SDL_main_callbacks.c:124:0: 0x7ff7672b062c in SDL_IterateMainCallbacks (SDL3.lib)
SDL_PumpEvents();

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\main\generic\SDL_sysmain_callbacks.c:51:0: 0x7ff766de369f in GenericIterateMainCallbacks (SDL3.lib)
return SDL_IterateMainCallbacks(!iterate_after_waitevent);

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\main\generic\SDL_sysmain_callbacks.c:62:0: 0x7ff766de349e in SDL_EnterAppMainCallbacks_REAL (SDL3.lib)
while ((rc = GenericIterateMainCallbacks()) == SDL_APP_CONTINUE) {

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\dynapi\SDL_dynapi_procs.h:207:0: 0x7ff766b4808b in SDL_EnterAppMainCallbacks (SDL3.lib)
SDL_DYNAPI_PROC(int,SDL_EnterAppMainCallbacks,(int a, char *b[], SDL_AppInit_func c, SDL_AppIterate_func d, SDL_AppEvent_func e, SDL_AppQuit_func f),(a,b,c,d,e,f),return)

D:\ZigProjects\snake.zig-cache\o\7b87f4b87ed5fdc3d09a46b59a3d7b20\SDL3\SDL_main_impl.h:59:0: 0x7ff766b41042 in SDL_main (snake.obj)
return SDL_EnterAppMainCallbacks(argc, argv, SDL_AppInit, SDL_AppIterate, SDL_AppEvent, SDL_AppQuit);

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\main\windows\SDL_sysmain_runapp.c:88:0: 0x7ff766e53432 in SDL_RunApp_REAL (SDL3.lib)
result = mainFunction(argc, argv);

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\dynapi\SDL_dynapi_procs.h:804:0: 0x7ff766b8a1a6 in SDL_RunApp_DEFAULT (SDL3.lib)
SDL_DYNAPI_PROC(int,SDL_RunApp,(int a, char *b[], SDL_main_func c, void *d),(a,b,c,d),return)

C:\Users\miern\AppData\Local\zig\p\sdl-0.2.0+3.2.8-7uIn9FxHfQE325TK7b0qpgt10G3x1xl-3ZMOfTzxUg3C\src\dynapi\SDL_dynapi_procs.h:804:0: 0x7ff766b568f1 in SDL_RunApp (SDL3.lib)
SDL_DYNAPI_PROC(int,SDL_RunApp,(int a, char *b[], SDL_main_func c, void *d),(a,b,c,d),return)

D:\ZigProjects\snake.zig-cache\o\7b87f4b87ed5fdc3d09a46b59a3d7b20\SDL3\SDL_main_impl.h:125:0: 0x7ff766b41f86 in WinMain (snake.obj)
return SDL_RunApp(0, NULL, SDL_main, NULL);

C:\Program Files\Zig\zig-windows-x86_64-0.14.0\lib\libc\mingw\crt\crtexewin.c:67:0: 0x7ff766b977a2 in main (mingw32.lib)
return _tWinMain (hInstance, NULL, lpCmdLine, nShowCmd);

C:\Program Files\Zig\zig-windows-x86_64-0.14.0\lib\libc\mingw\crt\crtexe.c:266:0: 0x7ff766b43ddb in __tmainCRTStartup (crt2.obj)
mainret = _tmain (argc, argv, envp);

C:\Program Files\Zig\zig-windows-x86_64-0.14.0\lib\libc\mingw\crt\crtexe.c:186:0: 0x7ff766b43e3b in mainCRTStartup (crt2.obj)
ret = __tmainCRTStartup ();

???:?:?: 0x7ffdd895e8d6 in ??? (KERNEL32.DLL)
???:?:?: 0x7ffdd923bf2b in ??? (ntdll.dll)

[castholm]

The crash is due to a bug/undefined behavior in SDL which is caught by Zig enabling UBSan in safety-checked release modes, see #8 for details.

It has already been fixed in the upstream SDL repo (libsdl-org#12505) and will be included here once SDL 3.2.10 is released, which shouldn't take too long.

In the meantime you can either build with ReleaseFast or ReleaseSmall (pass .optimize = ReleaseFast in your build.zig), or use rohlem's fork of this repo which includes the fix: https://github.com/rohlem/SDL/tree/PR-fix-ub-windowsevents-leftshift-negative