[Bug preprocessor/60875] `_Pragma("message \"foo\")"` doesn't work in expression contexts.

[foss+gcc--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60875

--- Comment #9 from Alejandro Colomar <foss+...@alejandro-colomar.es> ---
Is this a defect in the standard?

6.10.11p1 says:

> The original four preprocessing tokens in the unary operator expression are 
> removed.

Without making any mention to different kinds of pragmas.  Maybe it should say
that it is implementation defined whether the tokens are removed?