https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119632
--- Comment #9 from Simon Sobisch <simonsobisch at gnu dot org> --- Note: GnuCOBOL also support that, just in case a paying customer comes around :-) To not break NIST85 gcobol should set -std=cobol85 to -dialect ibm, with the current implementation. (Note: "stacking" -dialect is something that not a single COBOL compiler I'm aware of does; but I also think something like -std=gnu85 -std=gnumf would be more reasonable)
