[Bug c++/87380] Explicit instantations should use weak symbols on darwin

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87380

--- Comment #19 from Iain Sandoe <iains at gcc dot gnu.org> ---
Author: iains
Date: Thu Dec  6 20:09:26 2018
New Revision: 266866

URL: https://gcc.gnu.org/viewcvs?rev=266866&root=gcc&view=rev
Log:
Darwin - fix PR c++/87380

This is [intentionally] broken C++ ABI, that was catering for a
tool problem that existed in a very old Darwin toolchain.

The issue is not present after Darwin7 (using default system
tools) so confine the fix to that revision or earlier.

2018-12-06  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/87380
        * config/darwin.h (TARGET_WEAK_NOT_IN_ARCHIVE_TOC) Remove; use the
        default.
        * config/rs6000/darwin7.h (TARGET_WEAK_NOT_IN_ARCHIVE_TOC): New.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/darwin.h
    trunk/gcc/config/rs6000/darwin7.h