https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65524
Arnaud Charlet <charlet at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |INVALID --- Comment #3 from Arnaud Charlet <charlet at gcc dot gnu.org> --- Using a custom runtime change isn't supported by GCC FSF. I suspect the fix if any would be to geenrate the _elabs routine rather than trying to patch the binder, but as you are using a customized runtime, there might be other issues at play and the simplest is for you to remove the use of a 'is null' subprogram.