https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64866
--- Comment #5 from simon at pushface dot org --- (In reply to Arnaud Charlet from comment #2) > Visibility in the Ada runtime do not follow standard Ada rules. In other > words, the Ada runtime isn't implemented in Ada, but in a different > dialect very close to Ada, with additional restrictions. Are these additional restrictions documented anywhere, please?