https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119111
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Why do you think this is a bug?
https://eel.is/c++draft/dcl.decl#dcl.fct-1.sentence-5
says that the attribute-specifier-seq in your old{4,5,6,7} declarations
appertains to the function type.
And https://eel.is/c++draft/dcl.attr.deprecated#2 lists to what entities it may
be applied, and function type is not one of those.
GCC 15 will error on those 4 lines with -pedantic-errors, I think clang++
rejects it by default.