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! { dg-do compile }
! { dg-options "-fdump-tree-original" }
!
! Test the fix for PR43243, where unnecessary calls to internal_pack/unpack
! were being produced below. These references are contiguous and so do not
! need a temporary. In addition, the final call to 'bar' required a pack/unpack
! which had been missing since r156680, at least.
!
! Contributed Tobias Burnus <burnus@gcc.gnu.org>
!
module m
type t
integer, allocatable :: a(:)
integer, pointer :: b(:)
integer :: c(5)
end type t
end module m
subroutine foo(a,d,e,n)
use m
implicit none
integer :: n
type(t) :: a
type(t), allocatable :: d(:)
type(t), pointer :: e(:)
call bar( a%a) ! OK - no array temp needed
call bar( a%c) ! OK - no array temp needed
call bar( a%a(1:n)) ! Missed: No pack needed
call bar( a%b(1:n)) ! OK: pack needed
call bar( a%c(1:n)) ! Missed: No pack needed
call bar(d(1)%a(1:n)) ! Missed: No pack needed
call bar(d(1)%b(1:n)) ! OK: pack needed
call bar(d(1)%c(1:n)) ! Missed: No pack needed
call bar(e(1)%a(1:n)) ! Missed: No pack needed
call bar(e(1)%b(1:n)) ! OK: pack needed
call bar(e(1)%c(1:n)) ! Missed: No pack needed
end subroutine foo
use m
implicit none
integer :: i
integer, target :: z(6)
type(t) :: y
z = [(i, i=1,6)]
y%b => z(::2)
call bar(y%b) ! Missed: Pack needed
end
subroutine bar(x)
integer :: x(1:*)
print *, x(1:3)
if (any (x(1:3) /= [1,3,5])) call abort ()
end subroutine bar
! { dg-final { scan-tree-dump-times "unpack" 4 "original" } }
! { dg-final { cleanup-tree-dump "original" } }
! { dg-final { cleanup-modules "m" } }
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