[Bug c++/100796] [11 Regression] GCC does not honor #pragma diagnostic ignored when using the integrated preprocessor

[dangelog at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100796

--- Comment #6 from Giuseppe D'Angelo <dangelog at gmail dot com> ---
Hi,

Wow, that was quick!

I can't really judge the merit of the patch, but I've picked it on top of the
GCC 11.1.0 tarball and can confirm that it seems to fix all the warnings for
us. Thank you very much!