gcc/testsuite/gfortran.dg/interface_8.f90

   1 ! { dg-do compile }
   2 ! One of the tests of the patch for PR30068.
   3 ! Taken from comp.lang.fortran 3rd December 2006.
   4 !
   5 ! Although the generic procedure is not referenced and it would
   6 ! normally be permissible for it to be ambiguous, the USE, ONLY
   7 ! statement is effectively a reference and is invalid.
   8 !
   9 module mod1
  10    interface generic
  11       subroutine foo(a)
  12          real :: a
  13       end subroutine
  14    end interface generic
  15 end module  mod1
  16
  17 module mod2
  18    interface generic
  19       subroutine bar(a)
  20          real :: a
  21       end subroutine
  22    end interface generic
  23 end module  mod2
  24
  25 program main
  26   use mod1, only: generic   ! { dg-warning "has ambiguous interfaces" }
  27   use mod2
  28 end program main