[PATCH][c++] Do not warn about unused macros while processing #pragma GCC optimize

[Jeff Law]

On 8/5/19 7:53 PM, Piotr H. Dabrowski wrote:
> Fixes c++/91318.
>
> libcpp/ChangeLog:
>
> 2019-08-06  Piotr Henryk Dabrowski  <phd@phd.re>
>
> 	PR c++/91318
> 	* include/cpplib.h: Added cpp_define_unused(), cpp_define_formatted_unused()
> 	* directives.c: Likewise.
>
> gcc/c-family/ChangeLog:
>
> 2019-08-06  Piotr Henryk Dabrowski  <phd@phd.re>
>
> 	PR c++/91318
> 	* c-cppbuiltin.c: c_cpp_builtins_optimize_pragma(): use cpp_define_unused()

THanks.  I've bootstrapped and regression tested this patch and pushed
it to the trunk.  Sorry about the long delay.

jeff