[Bug c++/81609] incompatible extern C declarations of the same extern function at local scope accepted

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81609

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=32042

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
It does look similar or related to bug 32042.

The C front-end does the right thing and rejects the mismatched declarations,
so G++ doesn't match its behavior for the equivalent extern "C" case.  G++ only
rejects the conflicting declarations if they both have C++ linkage.