[Bug c++/105512] compilation with -fmodules-ts and std=c++20 leads to segfault

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105512

Patrick Palka <ppalka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-03-06
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=110730
             Status|UNCONFIRMED                 |ASSIGNED
                 CC|                            |ppalka at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |ppalka at gcc dot gnu.org

--- Comment #3 from Patrick Palka <ppalka at gcc dot gnu.org> ---
(In reply to David Truby from comment #1)
> Interestingly the issue also goes away if -D_GLIBCXX_USE_CXX11_ABI=0 is
> passed to both TUs so I suspect there's an issue with the module file not
> exporting the correct ABI for `std::string`

Good catch, so this is the same underlying issue as in PR110730.