https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91413
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |burnus at gcc dot gnu.org
--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Currently, direct recursive use is still not permitted:
Error: Function ‘faculty’ at (1) cannot be called recursively, as it is not
RECURSIVE
This has to be turned into "Error: Fortran 2018: ... without RECURSIVE".
We also have to think about how to handle the -f(no-)automatic -frecursive etc.
with this change. – As "SAVE" is also allowed in recursive functions, we just
need to ensure that the old semantic stays the same and write a few more words
to the documentation.
Regarding -fmax-stack-var-size=n and -fstack-arrays, one also needs to should
point out the implications regarding recursive use, possibly the effect of an
explicit RECURSIVE and Fortran >= 2018.
Regarding the stack to static handling: I think we currently also print the
message if the user has explicitly given "NON_RECURSIVE" as the flag is
currently binary (recursive - true/false) but it should keep track of
(nonspecified, recursive, non_recursive).
