gcc/testsuite/gfortran.dg/bind_c_usage_22.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-std=f2008ts" }
   3 !
   4 ! PR fortran/48858
   5 ! PR fortran/48820
   6 !
   7 ! OPTIONAL + BIND(C) is allowed since TS 29113
   8 !
   9
  10 ! VALID
  11 subroutine sub(z) bind(C)
  12   use iso_c_binding
  13   integer(c_int), value :: z
  14 end subroutine sub
  15
  16 ! VALID since TS29113
  17 subroutine sub2(z) bind(C)
  18   use iso_c_binding
  19   integer(c_int), optional :: z
  20 end subroutine sub2
  21
  22 ! VALID since TS29113
  23 subroutine sub2a(z) bind(C)
  24   use iso_c_binding
  25   integer(c_int) :: z
  26   optional :: z
  27 end subroutine sub2a
  28
  29 ! VALID since TS29113
  30 subroutine sub2b(z) bind(C)
  31   use iso_c_binding
  32   optional :: z
  33   integer(c_int) :: z
  34 end subroutine sub2b
  35
  36 ! Invalid
  37 subroutine sub3(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }
  38   use iso_c_binding
  39   integer(c_int), value, optional :: z
  40 end subroutine sub3
  41
  42 ! Invalid
  43 subroutine sub3a(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }
  44   use iso_c_binding
  45   integer(c_int) :: z
  46   optional :: z
  47   value :: z
  48 end subroutine sub3a
  49
  50 ! Invalid
  51 subroutine sub3b(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }
  52   use iso_c_binding
  53   optional :: z
  54   value :: z
  55   integer(c_int) :: z
  56 end subroutine sub3b
  57
  58 ! Invalid
  59 subroutine sub3c(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }
  60   use iso_c_binding
  61   value :: z
  62   integer(c_int) :: z
  63   optional :: z
  64 end subroutine sub3c