[Bug preprocessor/89142] Allow poisoning identifier from the command line

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89142

Florian Weimer <fw at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fw at gcc dot gnu.org

--- Comment #2 from Florian Weimer <fw at gcc dot gnu.org> ---
And with bash, you don't even need a separate file, you can use something like
this:

  -include <(echo '#pragma GCC poison IDENTIFIER')