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! { dg-do run }

! { dg-options "-Warray-temporaries -fall-intrinsics" }

! Check that LBOUND/UBOUND/SIZE/SHAPE of array-expressions get simplified

! in certain cases.

! There should no array-temporaries warnings pop up, as this means that

! the intrinsic call has not been properly simplified.

! Contributed by Daniel Kraft, d@domob.eu.

PROGRAM main

  IMPLICIT NONE

  ! Some explicitely shaped arrays and allocatable ones.

  INTEGER :: a(2, 3), b(0:1, 4:6)

  INTEGER, ALLOCATABLE :: x(:, :), y(:, :)

  ! Allocate to matching sizes and initialize.

  ALLOCATE (x(-1:0, -3:-1), y(11:12, 3))

  a = 0

  b = 1

  x = 2

  y = 3

  ! Run the checks.  This should be simplified without array temporaries,

  ! and additionally correct (of course).

  ! Shape of expressions known at compile-time.

  IF (ANY (LBOUND (a + b) /= 1)) CALL abort ()

  IF (ANY (UBOUND (2 * b) /= (/ 2, 3 /))) CALL abort ()

  IF (ANY (SHAPE (- b) /= (/ 2, 3 /))) CALL abort ()

  IF (SIZE (a ** 2) /= 6) CALL abort

  ! Shape unknown at compile-time.

  IF (ANY (LBOUND (x + y) /= 1)) CALL abort ()

  IF (SIZE (x ** 2) /= 6) CALL abort ()

  ! Unfortunately, the array-version of UBOUND and SHAPE keep generating

  ! temporary arrays for their results (not for the operation).  Thus we

  ! can not check SHAPE in this case and do UBOUND in the single-dimension

  ! version.

  IF (UBOUND (2 * y, 1) /= 2 .OR. UBOUND (2 * y, 2) /= 3) CALL abort ()

  !IF (ANY (SHAPE (- y) /= (/ 2, 3 /))) CALL abort ()

END PROGRAM main