https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103357
--- Comment #2 from Arnaud Charlet <charlet at gcc dot gnu.org> --- If you mean that you are building version X of gcc version version Y (newer than X) of gcc/gnat, then this is as expected and documented: this combination will not always work and isn't supported. You need to use version X or less recent to build GNAT. See https://gcc.gnu.org/install/prerequisites.html (GNAT section). If this is not what you meant, can you clarify?
