Peter Klausler d5285fef00
[flang] Downgrade error message to a portability warning (#98368)
f18 current emits an error when an assignment is made to an array
section with a vector subscript, and the array is finalized with a
non-elemental final subroutine. Some other compilers emit this error
because (I think) they want variables to only be finalized in place, not
by a subroutine call involving copy-in & copy-out of the finalized
elements.

Since many other Fortran compilers can handle this case, and there's
nothing in the standards to preclude it, let's downgrade this error
message to a portability warning.

This patch got complicated because the API for the WhyNotDefinable()
utility routine was such that it would return a message only in error
cases, and there was no provision for returning non-fatal messages. It
now returns either nothing, a fatal message, or a non-fatal warning
message, and all of its call sites have been modified to cope.
2024-07-11 13:12:00 -07:00

28 lines
709 B
Fortran

! RUN: %python %S/test_errors.py %s %flang_fc1 -pedantic -Werror
! PDT sensitivity of FINAL subroutines
module m
type :: pdt(k)
integer, kind :: k
contains
final :: finalArr, finalElem
end type
contains
subroutine finalArr(x)
type(pdt(1)), intent(in out) :: x(:)
end
elemental subroutine finalElem(x)
type(pdt(3)), intent(in out) :: x
end
end
program test
use m
type(pdt(1)) x1(1)
type(pdt(2)) x2(1)
type(pdt(3)) x3(1)
!PORTABILITY: Variable 'x1([INTEGER(8)::1_8])' has a vector subscript and will be finalized by non-elemental subroutine 'finalarr'
x1([1]) = pdt(1)()
x2([1]) = pdt(2)() ! ok, doesn't match either
x3([1]) = pdt(3)() ! ok, calls finalElem
end