gcc/testsuite/gfortran.dg/reshape_zerosize_3.f90

   1 ! { dg-do run }
   2 ! PR 49479 - this used not to print anything.
   3 ! Test case by Joost VandeVondele.
   4 MODULE M1
   5   IMPLICIT NONE
   6   type foo
   7      character(len=5) :: x
   8   end type foo
   9 CONTAINS
  10   SUBROUTINE S1(data)
  11     INTEGER, DIMENSION(:), INTENT(IN), &
  12          OPTIONAL                               :: DATA
  13     character(20) :: line
  14     IF (.not. PRESENT(data)) STOP 1
  15     write (unit=line,fmt='(I5)') size(data)
  16     if (line /= '    0               ') STOP 2
  17   END SUBROUTINE S1
  18
  19   subroutine s_type(data)
  20     type(foo), dimension(:), intent(in), optional :: data
  21     character(20) :: line
  22     IF (.not. PRESENT(data)) STOP 3
  23     write (unit=line,fmt='(I5)') size(data)
  24     if (line /= '    0               ') STOP 4
  25   end subroutine s_type
  26
  27   SUBROUTINE S2(N)
  28     INTEGER :: N
  29     INTEGER, ALLOCATABLE, DIMENSION(:, :)    :: blki
  30     type(foo), allocatable, dimension(:, :)  :: bar
  31     ALLOCATE(blki(3,N))
  32     allocate (bar(3,n))
  33     blki=0
  34     CALL S1(RESHAPE(blki,(/3*N/)))
  35     call s_type(reshape(bar, (/3*N/)))
  36   END SUBROUTINE S2
  37
  38 END MODULE M1
  39
  40 USE M1
  41 CALL S2(0)
  42 END