gcc/testsuite/gfortran.dg/derived_function_interface_1.f90

   1 ! { dg-do compile }
   2 ! Tests the fix for PR29634, in which an ICE would occur in the
   3 ! interface declaration of a function with an 'old-style' type
   4 ! declaration.  When fixed, it was found that the error message
   5 ! was not very helpful - this was fixed.
   6 !
   7 ! Contributed by Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
   8 !
   9 module kinds
  10   type foo
  11     integer :: i
  12   end type foo
  13 end module
  14
  15 type(foo) function ext_fun()
  16   use kinds
  17   ext_fun%i = 1
  18 end function ext_fun
  19
  20   use kinds
  21
  22   interface fun_interface
  23     type(foo) function fun()
  24       use kinds
  25     end function fun
  26   end interface
  27
  28   interface ext_fun_interface
  29     type(foo) function ext_fun()
  30       use kinds
  31     end function ext_fun
  32   end interface
  33
  34   type(foo) :: x
  35
  36   x = ext_fun ()
  37   print *, x%i
  38
  39 contains
  40
  41   type(foo) function fun() ! { dg-error "already has an explicit interface" }
  42   end function fun  ! { dg-error "Expecting END PROGRAM" }
  43
  44 end