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! { dg-do run }
!
! PR fortran/51758
!
! Contributed by Mikael Morin
!
! Check whether passing NULL() to an elemental procedure works,
! where NULL() denotes an absent optional argument.
!
program p
integer :: a(2)
integer :: b
a = 0
a = foo((/ 1, 1 /), null())
! print *, a
if (any(a /= 2)) call abort
a = 0
a = bar((/ 1, 1 /), null())
! print *, a
if (any(a /= 2)) call abort
b = 0
b = bar(1, null())
! print *, b
if (b /= 2) call abort
contains
function foo(a, b)
integer :: a(:)
integer, optional :: b(:)
integer :: foo(size(a))
if (present(b)) call abort
foo = 2
end function foo
elemental function bar(a, b)
integer, intent(in) :: a
integer, intent(in), optional :: b
integer :: bar
bar = 2
if (present(b)) bar = 1
end function bar
end program p
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