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! { dg-do run }

! Tests the fix for pr32880, in which 'res' was deallocated

! before it could be used in the concatenation.

! Adapted from vst28.f95, in Lawrie Schonfeld's iso_varying_string

! testsuite, by Tobias Burnus.

!

module iso_varying_string

  type varying_string

     character(LEN=1), dimension(:), allocatable :: chars

  end type varying_string

  interface assignment(=)

     module procedure op_assign_VS_CH

  end interface assignment(=)

  interface operator(//)

     module procedure op_concat_VS_CH

  end interface operator(//)

contains

  elemental subroutine op_assign_VS_CH (var, exp)

    type(varying_string), intent(out) :: var

    character(LEN=*), intent(in)      :: exp

    integer                      :: length

    integer                      :: i_char

    length = len(exp)

    allocate(var%chars(length))

    forall(i_char = 1:length)

       var%chars(i_char) = exp(i_char:i_char)

    end forall

  end subroutine op_assign_VS_CH

  elemental function op_concat_VS_CH (string_a, string_b) result (concat_string)

    type(varying_string), intent(in) :: string_a

    character(LEN=*), intent(in)     :: string_b

    type(varying_string)             :: concat_string

    len_string_a = size(string_a%chars)

    allocate(concat_string%chars(len_string_a+len(string_b)))

    if (len_string_a >0) &

       concat_string%chars(:len_string_a) = string_a%chars

    if (len (string_b) > 0) &

       concat_string%chars(len_string_a+1:) = string_b

  end function op_concat_VS_CH

end module iso_varying_string

program VST28

  use iso_varying_string

  character(len=10) :: char_a

  type(VARYING_STRING) :: res

  char_a = "abcdefghij"

  res = char_a(5:5)

  res = res//char_a(6:6)

  if(size(res%chars) /= 2 .or. any(res%chars /= ['e','f'])) then

    write(*,*) 'ERROR: should be ef, got: ', res%chars, size(res%chars)

    call abort ()

  end if

end program VST28

! { dg-final { cleanup-modules "iso_varying_string" } }