Bug 20810 – Freshly built DMD fails to read config file

$ C:\dev\dmd\src>rdmd build.d -v ..\generated\windows\release\64\dmd.exe It tries to get the canonical name of this path: C:\dev\dmd\generated\windows\release\64\sc.ini But it fails at this assertion: > core.exception.AssertError@dmd\root\filename.d(1011): Assertion failure This assert fails: assert(length == fullPathLength); I've read the docs here: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getfullpathnamew It seems on the second call the count will actually not include the null character, specifically this note from MSDN: > Note Although the return value in this case is a length that includes the terminating null character, the return value on success does not include the terminating null character in the count. I'll submit a PR.

@AndrejMitrovic updated dlang/dmd pull request #11111 "Fix issue 20810: Freshly built DMD fails to read config file " fixing this issue: - Fix getting canonical path in GetFullPathNameW According to MSDN docs, the return value of GetFullPathName does *not* count the terminating null character. In the first call, it *does* include this count because a buffer was not specified in that initial call. Fix Issue 20810 https://github.com/dlang/dmd/pull/11111

Fixed by https://github.com/dlang/dmd/pull/11293