[Bug preprocessor/94127] #pragma system_header marks unrelated files as system headers

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94127

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think it's intended.

You should put the pragma after including other headers if you don't want them
to be affected.