Hello,

I'm having trouble compiling simple test program on windows 10 with long
list of includes provided via '@response_file' argument

The full error is:

gcc.exe: fatal error: cannot execute
'C:/Tools/x86_64-12.2.0-release-win32-seh-rt_v10-rev0/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/../../../../x86_64-w64-mingw32/bin/as.exe':
CreateProcess: No such file or directory

compilation terminated.

Above path to the assembler program is valid therefore I don't understand
what is the issue here?

You can try to recreate the problem by compiling simple main.c file with
nothing in it but main function using command:
gcc @includes.txt main.c

I assume it has something to do with windows 32k CreateProcess command
length limitation? But isn't that the reason why respone files were
invented?

Regards,
Filip