https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40678
--- Comment #5 from G. Steinmetz <gs...@t-online.de> ---
Following program compiles smoothly and runs ...
Invocations of function h need obligatoric parenthesis, and a dummy.
On the other hand, "implicit none" would force variable h to be
explicitly declared.
$ cat z2.f90
module m
implicit none
contains
logical function f()
f = h
end function
logical function g()
g = .not. h
end function
logical function h(x)
logical, intent(in) :: x
h = .not. x
end function
end
program p
use m
print *, f()
print *, g() ! .not. f()
end
$ gfortran-9-20181021-chk -Wall -Wextra -fcheck=all -static-libgfortran -g
z2.f90
$ a.out
F
F
