https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119632
--- Comment #7 from Simon Sobisch <simonsobisch at gnu dot org> --- I think https://gitlab.cobolworx.com/COBOLworx/gcc-cobol/-/commit/9c2fcd3606662e550aea6173b06bc2a500b2ac52 is the right approach (adding a warning later, syntax-check if not iso, otherwise abort). But it should really do that - and allow it for _any_ other standard, not only ibm.
