Windows: Fix SDL_GetBasePath() truncating paths #4437
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SDL_GetBasePath grows its path buffer for long paths, but GetModuleFileNameExW always truncates and succeeds,
so `len` was always equal to (buflen - 1) which is 127. This is easily fixed by checking for (buflen - 1) instead of buflen.
For paths longer than MAX_PATH, this problem sometimes got hidden by Windows path shortening ("C:\PROGRA~1\" etc.).
Tested on Windows 10 x64 19041 and 10586.
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Tested on Windows 10 x64, versions 19041 and 10586.
Description
SDL_GetBasePathtries to reallocate its temporary buffer for long paths, butGetModuleFileNameExWalways truncates and succeeds, solenwas always equal tobuflen - 1which is 127.Easily fixed by checking for
buflen - 1instead ofbuflen.For paths longer than MAX_PATH, this problem sometimes got hidden by Windows path shortening (
C:\PROGRA~1\etc.).Existing Issue(s)
No issue for this bug AFAICT.EDIT: Fixes #4439.
Originally caused by the patch written for #1390.