[Bug libstdc++/66006] New: [6 regression] abi_check FAILs

["ro at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66006

            Bug ID: 66006
           Summary: [6 regression] abi_check FAILs
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
                CC: redi at gcc dot gnu.org
  Target Milestone: ---
              Host: *-*-solaris2.*
            Target: *-*-solaris2.*
             Build: *-*-solaris2.*

Within the last few days, the libstdc++-v3 abi_check started to FAIL on
Solaris:

libstdc++.log has

2 incompatible symbols
0
_ZNSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEED2Ev
std::__cxx11::basic_stringbuf<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t> >::~basic_stringbuf()
version status: incompatible
GLIBCXX_3.4.21
type: function
status: added


1
_ZNSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEED2Ev
std::__cxx11::basic_stringbuf<char, std::char_traits<char>,
std::allocator<char> >::~basic_stringbuf()
version status: incompatible
GLIBCXX_3.4.21
type: function
status: added

I have no idea what's going on here: those symbols are in the gcc 5
libstdc++.so
already, no idea why they are considered incompatible.

  Rainer