[Bug c++/91476] [9/10 Regression] const reference variables sharing the same name in two anonymous namespaces cause a multiple definition error

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91476

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:25d62480c89d6db90a66ba69f6dbaa820a1ac90b

commit r10-6307-g25d62480c89d6db90a66ba69f6dbaa820a1ac90b
Author: Jason Merrill <ja...@redhat.com>
Date:   Tue Jan 28 15:15:20 2020 -0500

    c++: Fix guard variable and attribute weak.

    My patch for PR 91476 worked for decls that are implicitly comdat/weak due
    to C++ linkage rules, but broke variables explicitly marked weak.

        PR c++/93477
        PR c++/91476
        * decl2.c (copy_linkage): Do copy DECL_ONE_ONLY and DECL_WEAK.