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 ! { dg-do run } ! { dg-options "-fdump-tree-original" } ! ! PR fortran/35681 ! Test the use of temporaries in case of elemental subroutines. PROGRAM main IMPLICIT NONE INTEGER, PARAMETER :: sz = 5 INTEGER :: i INTEGER :: a(sz) = (/ (i, i=1,sz) /) INTEGER :: b(sz) b = a CALL double(a(sz-b+1), a) ! { dg-warning "might interfere with actual" } ! Don't check the result, as the above is invalid ! and might produce unexpected results (overlapping vector subscripts). b = a CALL double (a, a) ! same range, no temporary IF (ANY(a /= 2*b)) STOP 1 b = a CALL double (a+1, a) ! same range, no temporary IF (ANY(a /= 2*b+2)) STOP 2 b = a CALL double ((a(1:sz)), a(1:sz)) ! same range, no temporary IF (ANY(a /= 2*b)) STOP 3 b = a CALL double(a(1:sz-1), a(2:sz)) ! { dg-warning "might interfere with actual" } ! Don't check the result, as the above is invalid, ! and might produce unexpected results (arguments overlap). b = a CALL double((a(1:sz-1)), a(2:sz)) ! paren expression, temporary created ! { dg-final { scan-tree-dump-times "A\.16\\\[4\\\]" 1 "original" } } IF (ANY(a /= (/ b(1), (2*b(i), i=1,sz-1) /))) STOP 4 b = a CALL double(a(1:sz-1)+1, a(2:sz)) ! op expression, temporary created ! { dg-final { scan-tree-dump-times "A\.25\\\[4\\\]" 1 "original" } } IF (ANY(a /= (/ b(1), (2*b(i)+2, i=1,sz-1) /))) STOP 5 b = a CALL double(self(a), a) ! same range, no temporary IF (ANY(a /= 2*b)) STOP 6 b = a CALL double(self(a(1:sz-1)), a(2:sz)) ! function expr, temporary created ! { dg-final { scan-tree-dump-times "A\.37\\\[4\\\]" 1 "original" } } IF (ANY(a /= (/ b(1), (2*b(i), i=1,sz-1) /))) STOP 7 CONTAINS ELEMENTAL SUBROUTINE double(a, b) IMPLICIT NONE INTEGER, INTENT(IN) :: a INTEGER, INTENT(OUT) :: b b = 2 * a END SUBROUTINE double ELEMENTAL FUNCTION self(a) IMPLICIT NONE INTEGER, INTENT(IN) :: a INTEGER :: self self = a END FUNCTION self END PROGRAM main ! { dg-final { scan-tree-dump-times "_gfortran_internal_unpack" 3 "original" } }