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! { dg-do run }
!
! PR fortran/52151
!
! Check that the bounds/shape/strides are correctly set
! for (re)alloc on assignment, if the LHS is either not
! allocated or has the wrong shape. This test is for
! code which is only invoked for libgfortran intrinsic
! such as RESHAPE.
!
! Based on the example of PR 52117 by Steven Hirshman
!
PROGRAM RESHAPEIT
call unalloc ()
call wrong_shape ()
contains
subroutine unalloc ()
INTEGER, PARAMETER :: n1=2, n2=2, n3=2
INTEGER :: m1, m2, m3, lc
REAL, ALLOCATABLE :: A(:,:), B(:,:,:)
REAL :: val
ALLOCATE (A(n1,n2*n3))
! << B is not allocated
val = 0
lc = 0
DO m3=1,n3
DO m2=1,n2
lc = lc+1
DO m1=1,n1
val = val+1
A(m1, lc) = val
END DO
END DO
END DO
B = RESHAPE(A, [n1,n2,n3])
if (any (shape (B) /= [n1,n2,n3])) call abort ()
if (any (ubound (B) /= [n1,n2,n3])) call abort ()
if (any (lbound (B) /= [1,1,1])) call abort ()
lc = 0
DO m3=1,n3
DO m2=1,n2
lc = lc+1
DO m1=1,n1
! PRINT *,'A(',m1,',',lc,') = ',A(m1,lc),' B = ',B(m1,m2,m3)
if (A(m1,lc) /= B(m1,m2,m3)) call abort ()
END DO
END DO
END DO
DEALLOCATE(A, B)
end subroutine unalloc
subroutine wrong_shape ()
INTEGER, PARAMETER :: n1=2, n2=2, n3=2
INTEGER :: m1, m2, m3, lc
REAL, ALLOCATABLE :: A(:,:), B(:,:,:)
REAL :: val
ALLOCATE (A(n1,n2*n3))
ALLOCATE (B(1,1,1)) ! << shape differs from RHS
val = 0
lc = 0
DO m3=1,n3
DO m2=1,n2
lc = lc+1
DO m1=1,n1
val = val+1
A(m1, lc) = val
END DO
END DO
END DO
B = RESHAPE(A, [n1,n2,n3])
if (any (shape (B) /= [n1,n2,n3])) call abort ()
if (any (ubound (B) /= [n1,n2,n3])) call abort ()
if (any (lbound (B) /= [1,1,1])) call abort ()
lc = 0
DO m3=1,n3
DO m2=1,n2
lc = lc+1
DO m1=1,n1
! PRINT *,'A(',m1,',',lc,') = ',A(m1,lc),' B = ',B(m1,m2,m3)
if (A(m1,lc) /= B(m1,m2,m3)) call abort ()
END DO
END DO
END DO
DEALLOCATE(A, B)
end subroutine wrong_shape
END PROGRAM RESHAPEIT
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