[Bug libstdc++/108969] New: [13 Regression] Initializing iostreams in the library needs a GLIBCXX_3.4.31 versioned symbol

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108969

            Bug ID: 108969
           Summary: [13 Regression] Initializing iostreams in the library
                    needs a GLIBCXX_3.4.31 versioned symbol
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ABI
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
  Target Milestone: ---

The fix for PR 44952 is an ABI change because code compiled with GCC 13 relies
on the init happening once in the library. If a binary compiled with GCC 13
uses libstdc++.so.6.0.30 at runtime then it will segfault when trying to use
the streams. Even though this scenario is unsupported, it would be much better
to get an error from ld.so