------- Comment #2 from burnus at gcc dot gnu dot org 2006-12-17 21:20 ------- > As long as the callee doesn't change the value it's probably valid, so this > would need some kind of interprocedural analysis to give a correct error.
I think it is formally seen invalid as you have INTENT([IN]OUT) set. Actually, I just retested with NAG f95 and it gives: Error: test.f90, line 5: Active DO variable I passed to INTENT(OUT) argument I number 1 of MYSUB We could nontheless consider of giving a warning only, if you think the case of INTENT(OUT) with no assignment is much more common than a wrongly used do-variable. By the way, if no value is assigned to an INTENT(OUT) variable, gfortran should follow the other compilers and issue a warning: "INTENT(OUT) dummy argument I never set" "INTENT(OUT) variable 'i' at (1) is never set" "A dummy argument with an explicit INTENT(OUT) declaration is not given an explicit value." -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30146
