gcc/testsuite/gfortran.dg/select_type_1.f03

   1 ! { dg-do compile }
   2 !
   3 ! Error checking for the SELECT TYPE statement
   4 !
   5 ! Contributed by Janus Weil <janus@gcc.gnu.org>
   6
   7   type :: t1
   8     integer :: i = 42
   9     class(t1),pointer :: cp
  10   end type
  11
  12   type, extends(t1) :: t2
  13     integer :: j = 99
  14   end type
  15
  16   type :: t3
  17     real :: r
  18   end type
  19
  20   type :: ts
  21     sequence
  22     integer :: k = 5
  23   end type
  24
  25   class(t1), pointer :: a => NULL()
  26   type(t1), target :: b
  27   type(t2), target :: c
  28   a => b
  29   print *, a%i
  30
  31   type is (t1)  ! { dg-error "Unexpected TYPE IS statement" }
  32
  33   select type (3.5)  ! { dg-error "is not a named variable" }
  34   select type (a%cp) ! { dg-error "is not a named variable" }
  35   select type (b)    ! { dg-error "Selector shall be polymorphic" }
  36   end select
  37
  38   select type (a)
  39     print *,"hello world!"  ! { dg-error "Expected TYPE IS, CLASS IS or END SELECT" }
  40   type is (t1)
  41     print *,"a is TYPE(t1)"
  42   type is (t2)
  43     print *,"a is TYPE(t2)"
  44   class is (ts)  ! { dg-error "must be extensible" }
  45     print *,"a is TYPE(ts)"
  46   type is (t3)   ! { dg-error "must be an extension of" }
  47     print *,"a is TYPE(t3)"
  48   type is (t4)   ! { dg-error "error in TYPE IS specification" }
  49     print *,"a is TYPE(t3)"
  50   class is (t1)
  51     print *,"a is CLASS(t1)"
  52   class is (t2) label  ! { dg-error "Syntax error" }
  53     print *,"a is CLASS(t2)"
  54   class default  ! { dg-error "cannot be followed by a second DEFAULT CASE" }
  55     print *,"default"
  56   class default  ! { dg-error "cannot be followed by a second DEFAULT CASE" }
  57     print *,"default2"
  58   end select
  59
  60 label: select type (a)
  61   type is (t1) label
  62     print *,"a is TYPE(t1)"
  63   type is (t2)  ! { dg-error "overlaps with CASE label" }
  64     print *,"a is TYPE(t2)"
  65   type is (t2)  ! { dg-error "overlaps with CASE label" }
  66     print *,"a is still TYPE(t2)"
  67   class is (t1) labe   ! { dg-error "Expected block name" }
  68     print *,"a is CLASS(t1)"
  69   end select label
  70
  71 end