gcc/testsuite/gfortran.dg/unused_artificial_dummies_1.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-Wunused-variable -Wunused-parameter" }
   3 ! This tests the fix for PR18111 in which some artificial declarations
   4 ! were being listed as unused parameters:
   5 ! (i) Array dummies, where a copy is made;
   6 ! (ii) The dummies of "entry thunks" (ie. the articial procedures that
   7 ! represent ENTRYs and call the "entry_master" function; and
   8 ! (iii) The __entry parameter of the entry_master function, which
   9 ! indentifies the calling entry thunk.
  10 ! All of these have DECL_ARTIFICIAL (tree) set.
  11 !
  12 ! Contributed by Paul Thomas  <pault@gcc.gnu.org>
  13 !
  14 module foo
  15   implicit none
  16 contains
  17
  18 !This is the original problem
  19
  20   subroutine bar(arg1, arg2, arg3, arg4, arg5)
  21     character(len=80), intent(in) :: arg1
  22     character(len=80), dimension(:), intent(in) :: arg2
  23     integer, dimension(arg4), intent(in) :: arg3
  24     integer, intent(in) :: arg4
  25     character(len=arg4), intent(in) :: arg5
  26     print *, arg1, arg2, arg3, arg4, arg5
  27   end subroutine bar
  28
  29 ! This ICED with the first version of the fix because gfc_build_dummy_array_decl
  30 ! sometimes NULLS sym->backend_decl; taken from aliasing_dummy_1.f90
  31
  32   subroutine foo1 (slist, i)
  33     character(*), dimension(*) :: slist
  34     integer i
  35     write (slist(i), '(2hi=,i3)') i
  36   end subroutine foo1
  37
  38 ! This tests the additions to the fix that prevent the dummies of entry thunks
  39 ! and entry_master __entry parameters from being listed as unused.
  40
  41   function f1 (a)
  42     integer, dimension (2, 2) :: a, b, f1, e1
  43     f1 (:, :) = 15 + a
  44     return
  45   entry e1 (b)
  46     e1 (:, :) = 42 + b
  47   end function
  48
  49 end module foo