gcc/testsuite/gfortran.dg/byte_1.f90

! { dg-do compile }
! { dg-options " -std=f95" }
program testbyte
  integer(1) :: ii = 7
  call foo(ii)
end program testbyte

subroutine foo(ii)
  integer(1) ii
  byte b          ! { dg-error "BYTE type" }
  b = ii
  call bar(ii,b)
end subroutine foo

subroutine bar(ii,b)
  integer (1) ii
  byte b          ! { dg-error "BYTE type" }
  if (b.ne.ii) then
!     print *,"Failed"
     STOP 1
  end if
end subroutine bar