98eb7d0a8d
Constraint C1529 requires that the base object of a type-bound procedure reference be a scalar if the TBP has the NOPASS attribute. Most compilers do not enforce this constraint and it does not appear to have any implementation justification, so emit portability warning. On the other hand, we fail to enforce C919 for references to procedure pointer components, whose base objects must of course be scalars in order to avoid ambiguity and empty arrays, whether NOPASS is present or not. Differential Revision: https://reviews.llvm.org/D140148
243 lines
6.1 KiB
Fortran
243 lines
6.1 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1
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! Confirm enforcement of constraints and restrictions in 7.5.7.3
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! and C733, C734 and C779, C780, C782, C783, C784, and C785.
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module m
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!ERROR: An ABSTRACT derived type must be extensible
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!PORTABILITY: A derived type with the BIND attribute is empty
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type, abstract, bind(c) :: badAbstract1
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end type
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!ERROR: An ABSTRACT derived type must be extensible
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type, abstract :: badAbstract2
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sequence
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real :: badAbstract2Field
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end type
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type, abstract :: abstract
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contains
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!ERROR: DEFERRED is required when an interface-name is provided
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procedure(s1), pass :: ab1
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!ERROR: Type-bound procedure 'ab3' may not be both DEFERRED and NON_OVERRIDABLE
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procedure(s1), deferred, non_overridable :: ab3
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!ERROR: DEFERRED is only allowed when an interface-name is provided
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procedure, deferred, non_overridable :: ab4 => s1
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end type
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type :: nonoverride
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contains
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procedure, non_overridable, nopass :: no1 => s1
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end type
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type, extends(nonoverride) :: nonoverride2
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end type
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type, extends(nonoverride2) :: nonoverride3
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contains
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!ERROR: Override of NON_OVERRIDABLE 'no1' is not permitted
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procedure, nopass :: no1 => s1
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end type
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type, abstract :: missing
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contains
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procedure(s4), deferred :: am1
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end type
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!ERROR: Non-ABSTRACT extension of ABSTRACT derived type 'missing' lacks a binding for DEFERRED procedure 'am1'
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type, extends(missing) :: concrete
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end type
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type, extends(missing) :: intermediate
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contains
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procedure :: am1 => s7
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end type
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type, extends(intermediate) :: concrete2 ! ensure no false missing binding error
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end type
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!WARNING: A derived type with the BIND attribute is empty
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type, bind(c) :: inextensible1
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end type
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!ERROR: The parent type is not extensible
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type, extends(inextensible1) :: badExtends1
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end type
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type :: inextensible2
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sequence
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real :: inextensible2Field
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end type
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!ERROR: The parent type is not extensible
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type, extends(inextensible2) :: badExtends2
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end type
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!ERROR: Derived type 'real' not found
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type, extends(real) :: badExtends3
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end type
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type :: base
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real :: component
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contains
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!ERROR: Procedure bound to non-ABSTRACT derived type 'base' may not be DEFERRED
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procedure(s2), deferred :: bb1
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!ERROR: DEFERRED is only allowed when an interface-name is provided
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procedure, deferred :: bb2 => s2
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end type
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type, extends(base) :: extension
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contains
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!ERROR: A type-bound procedure binding may not have the same name as a parent component
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procedure :: component => s3
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end type
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type :: nopassBase
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contains
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procedure, nopass :: tbp => s1
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end type
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type, extends(nopassBase) :: passExtends
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contains
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!ERROR: A passed-argument type-bound procedure may not override a NOPASS procedure
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procedure :: tbp => s5
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end type
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type :: passBase
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contains
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procedure :: tbp => s6
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end type
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type, extends(passBase) :: nopassExtends
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contains
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!ERROR: A NOPASS type-bound procedure may not override a passed-argument procedure
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procedure, nopass :: tbp => s1
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end type
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contains
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subroutine s1(x)
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class(abstract), intent(in) :: x
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end subroutine s1
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subroutine s2(x)
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class(base), intent(in) :: x
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end subroutine s2
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subroutine s3(x)
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class(extension), intent(in) :: x
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end subroutine s3
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subroutine s4(x)
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class(missing), intent(in) :: x
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end subroutine s4
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subroutine s5(x)
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class(passExtends), intent(in) :: x
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end subroutine s5
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subroutine s6(x)
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class(passBase), intent(in) :: x
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end subroutine s6
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subroutine s7(x)
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class(intermediate), intent(in) :: x
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end subroutine s7
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end module
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module m1
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implicit none
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interface g
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module procedure mp
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end interface g
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type t
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contains
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!ERROR: The binding of 'tbp' ('g') must be either an accessible module procedure or an external procedure with an explicit interface
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procedure,pass(x) :: tbp => g
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end type t
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contains
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subroutine mp(x)
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class(t),intent(in) :: x
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end subroutine
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end module m1
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module m2
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type parent
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real realField
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contains
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!ERROR: Procedure binding 'proc' with no dummy arguments must have NOPASS attribute
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procedure proc
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end type parent
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type,extends(parent) :: child
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contains
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!ERROR: Procedure binding 'proc' with no dummy arguments must have NOPASS attribute
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procedure proc
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end type child
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contains
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subroutine proc
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end subroutine
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end module m2
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module m3
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type t
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contains
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procedure b
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end type
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contains
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!ERROR: Cannot use an alternate return as the passed-object dummy argument
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subroutine b(*)
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return 1
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end subroutine
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end module m3
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module m4
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type t
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contains
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procedure b
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end type
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contains
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! Check to see that alternate returns work with default PASS arguments
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subroutine b(this, *)
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class(t) :: this
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return 1
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end subroutine
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end module m4
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module m5
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type t
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contains
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!ERROR: Passed-object dummy argument 'passarg' of procedure 'b' must be of type 't' but is 'INTEGER(4)'
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procedure, pass(passArg) :: b
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end type
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contains
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subroutine b(*, passArg)
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integer :: passArg
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return 1
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end subroutine
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end module m5
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module m6
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type t
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contains
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!ERROR: Passed-object dummy argument 'passarg' of procedure 'b' must be polymorphic because 't' is extensible
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procedure, pass(passArg) :: b
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end type
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contains
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subroutine b(*, passArg)
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type(t) :: passArg
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return 1
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end subroutine
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end module m6
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module m7
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type t
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contains
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! Check to see that alternate returns work with PASS arguments
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procedure, pass(passArg) :: b
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end type
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contains
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subroutine b(*, passArg)
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class(t) :: passArg
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return 1
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end subroutine
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end module m7
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module m8 ! C1529 - warning only
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type t
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procedure(mysubr), pointer, nopass :: pp
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contains
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procedure, nopass :: tbp => mysubr
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end type
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contains
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subroutine mysubr
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end subroutine
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subroutine test
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type(t) a(2)
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!PORTABILITY: Base of NOPASS type-bound procedure reference should be scalar
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call a%tbp
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!ERROR: Base of procedure component reference must be scalar
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call a%pp
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end subroutine
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end module
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program test
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use m1
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type,extends(t) :: t2
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end type
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type(t2) a
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call a%tbp
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end program
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