`pacman -S mingw-w64-x86_64-gcc` makes build error on Processing 4.5.7

[ffunatsu]

In my environment (Windows 11 25H2 26200), pacman -S mingw-w64-x86_64-gcc makes build error on Processing 4.5.7. Showing just red empty error message.

In my environment, default g++ would be C:\ProgramData\mingw64\mingw64\bin\g++.exe (Probably installed by chocolatey, choco install mingw.)

Just workaround, removing mingw-w64-x86_64-gcc or copying C:\ProgramData\mingw64\mingw64 into %AppData%\CppMode\gcc\mingw64 solved this.

(CppMode version is 0.6.1.)

[ffunatsu]

copying C:\ProgramData\mingw64\mingw64 into %AppData%\CppMode\gcc\mingw64 solved this.

This caused other runtime troubles, while default g++ working nice.
So I chose removing mingw-w64-x86_64-gcc, but now I cannot use mingw-w64-x86_64-gcc from others in MSYS2.

[ffunatsu]

I tried removing cache on C:\Users\xxx\Documents\Processing\modes\CppMode\cache\, but had no effect.

And also removing CppMode and reinstalling, had no effect.

[ffunatsu]

I think this issue won't occur in a clean environment. It seemed to me that the problem likely stemmed from the fact that g++ was already present but was added later.

Therefore, I think it would be appropriate to close this issue as “unplanned.”

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I checked on another environment, the same problem still occurs.