[Bug lto/47423] New: Many testsuite failures caused by missing gxx_visibility_sj0

[ktietz at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47423

           Summary: Many testsuite failures caused by missing
                    gxx_visibility_sj0
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ktietz@gcc.gnu.org


By using lto-plugin via ld a lot of testcases failing in g++.dg testsuite as
gxx_visibility_sj0 can be resolved by linker in one-pass linking.
The g++ frontend doesn't add here for LTO linker-plugin case the pass-through
options. For the standard C case this is done in gcc.c in spec.
As COFF targets aren't able to use gold as linker, Ian's additions aren't here
of much help.
So for making things at least consistent, we should either remove from gcc.c
the pass-through part from spec, or add them for other libraries (like gomp,
etc) and for FE specific libraries, too.
Patch for this was sent recent by my to add the pass-through options for C++
FE, which solved that issue.