https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108056
--- Comment #11 from Gilles Gouaillardet <gilles.gouaillardet at gmail dot com> --- gfortran-11 compiles and run correctly when it uses libgfortran-11. To be perfectly clear, compilation always work: the issue occurs at runtime when gfortran-11 compiled code uses libgfortran-12).
