[Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69331

--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You can have a look e.g. how libgomp/testsuite/lib/*.exp finds -L options it
wants to add to find libstdc++ or libgfortran.  That said, I think better would
be not to add this unconditionally to all libstdc++ tests, but add some
dg-add-libatomic-options or similar tcl code that would append it if some test
requests it.