gcc/testsuite/gfortran.dg/interface_23.f90

   1 ! { dg-do compile }
   2 !
   3 ! This tests the fix for PR36325, which corrected for the fact that a
   4 ! specific or generic INTERFACE statement implies the EXTERNAL attibute.
   5 !
   6 ! Contributed by Janus Weil <janus@gcc.gnu.org>
   7
   8 module a
   9   interface
  10     subroutine foo
  11     end subroutine
  12   end interface
  13   external foo  ! { dg-error "Duplicate EXTERNAL attribute" }
  14 end module
  15
  16 module b
  17   interface
  18     function sin (x)
  19       real :: sin, x
  20     end function
  21   end interface
  22   intrinsic sin  ! { dg-error "EXTERNAL attribute conflicts with INTRINSIC attribute" }
  23 end module
  24
  25 ! argument checking was not done for external procedures with explicit interface
  26 program c
  27   interface
  28     subroutine bar(x)
  29       real :: x
  30     end subroutine
  31   end interface
  32   call bar()  ! { dg-error "Missing actual argument" }
  33 end program