https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102458
--- Comment #4 from anlauf at gcc dot gnu.org --- (In reply to kargl from comment #3) > Well, it is a pure function. Fortran 2018, page 327, > > All standard intrinsic functions are pure. Of course you are correct. I wanted to express that in this context one cannot interpret PURE == (compile time) constant.