https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109500
--- Comment #15 from anlauf at gcc dot gnu.org --- (In reply to Steve Kargl from comment #13) > Note 1 in Fortran 2023, Sec. 8.5.3, p. 100, is non-normative > text. I suppose one can claim that gfortran should throw an > error when a function result is marked with the allocatable > attribute. You mean when the function result is not allocated in that case? > Unfortunately, it is likely a catch-22 situation > in that gfortran needs to know the function result is allocatable > so it can do the allocaton within the function, but it is not > an allocatable outside of the function. Not sure gfortran > can mark an internal symbol to do both. I checked how to implement a run-time check for a non-allocated function result, but did this in the wrong place - in the caller. This did work when I did allocate and the deallocate before return, otherwise the result variable is simply undefined, and the check does not work. So a run-time check needs to be put where the function return is generated.