[Bug c++/124823] Dollar signs should generate a pedantic warning

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124823

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
This expected
https://gcc.gnu.org/onlinedocs/gcc-15.2.0/cpp/Implementation-defined-behavior.html#Identifier-characters