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! { dg-do compile }

! { dg-options "-std=f2008ts" }

!

! PR fortran/48858

! PR fortran/48820

!

! OPTIONAL + BIND(C) is allowed since TS 29113

!

! VALID

subroutine sub(z) bind(C)

  use iso_c_binding

  integer(c_int), value :: z

end subroutine sub

! VALID since TS29113

subroutine sub2(z) bind(C)

  use iso_c_binding

  integer(c_int), optional :: z

end subroutine sub2

! VALID since TS29113

subroutine sub2a(z) bind(C)

  use iso_c_binding

  integer(c_int) :: z

  optional :: z

end subroutine sub2a

! VALID since TS29113

subroutine sub2b(z) bind(C)

  use iso_c_binding

  optional :: z

  integer(c_int) :: z

end subroutine sub2b

! Invalid

subroutine sub3(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }

  use iso_c_binding

  integer(c_int), value, optional :: z

end subroutine sub3

! Invalid

subroutine sub3a(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }

  use iso_c_binding

  integer(c_int) :: z

  optional :: z

  value :: z

end subroutine sub3a

! Invalid

subroutine sub3b(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }

  use iso_c_binding

  optional :: z

  value :: z

  integer(c_int) :: z

end subroutine sub3b

! Invalid

subroutine sub3c(z) bind(C) ! { dg-error "cannot have both the OPTIONAL and the VALUE attribute" }

  use iso_c_binding

  value :: z

  integer(c_int) :: z

  optional :: z

end subroutine sub3c