[Bug c++/91318] [C++][PATCH] warnings about unused internal macros with -Wunused-macros and #pragma GCC optimize

[phd at phd dot re]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91318

--- Comment #3 from Piotr Henryk Dabrowski <phd at phd dot re> ---
Sent:
https://gcc.gnu.org/ml/gcc-patches/2019-08/msg00325.html