0c64cb6d08
Summary: C7113 States that "An ac-value shall not be unlimited polymorphic." We failed to detect this situation which resulted in a crash when trying to get the underlying derived type specification of the unlimited polymorphic value. I added code to avoid the crash, code to emit an error message, and a test. Reviewers: klausler, tskeith, DavidTruby Subscribers: llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D83793
76 lines
2.3 KiB
Fortran
76 lines
2.3 KiB
Fortran
! RUN: %S/test_errors.sh %s %t %f18
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! C703 (R702) The derived-type-spec shall not specify an abstract type (7.5.7).
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! This constraint refers to the derived-type-spec in a type-spec. A type-spec
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! can appear in an ALLOCATE statement, an ac-spec for an array constructor, and
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! in the type specifier of a TYPE GUARD statement
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!
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! C706 TYPE(derived-type-spec) shall not specify an abstract type (7.5.7).
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! This is for a declaration-type-spec
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!
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! C796 (R756) The derived-type-spec shall not specify an abstract type (7.5.7).
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!
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! C705 (R703) In a declaration-type-spec that uses the CLASS keyword,
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! derived-type-spec shall specify an extensible type (7.5.7).
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subroutine s()
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type, abstract :: abstractType
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end type abstractType
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type, extends(abstractType) :: concreteType
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end type concreteType
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! declaration-type-spec
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!ERROR: ABSTRACT derived type may not be used here
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type (abstractType), allocatable :: abstractVar
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! ac-spec for an array constructor
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!ERROR: ABSTRACT derived type may not be used here
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!ERROR: ABSTRACT derived type may not be used here
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type (abstractType), parameter :: abstractArray(*) = (/ abstractType :: /)
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class(*), allocatable :: selector
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! Structure constructor
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!ERROR: ABSTRACT derived type may not be used here
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!ERROR: ABSTRACT derived type 'abstracttype' may not be used in a structure constructor
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type (abstractType) :: abstractVar1 = abstractType()
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! Allocate statement
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!ERROR: ABSTRACT derived type may not be used here
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allocate(abstractType :: abstractVar)
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select type(selector)
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! Type specifier for a type guard statement
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!ERROR: ABSTRACT derived type may not be used here
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type is (abstractType)
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end select
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end subroutine s
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subroutine s1()
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type :: extensible
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end type
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type, bind(c) :: inextensible
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end type
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! This one's OK
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class(extensible), allocatable :: y
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!ERROR: Non-extensible derived type 'inextensible' may not be used with CLASS keyword
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class(inextensible), allocatable :: x
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end subroutine s1
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subroutine s2()
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type t
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integer i
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end type t
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type, extends(t) :: t2
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real x
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end type t2
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contains
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function f1(dummy)
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class(*) dummy
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type(t) f1(1)
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!ERROR: Cannot have an unlimited polymorphic value in an array constructor
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f1 = [ (dummy) ]
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end function f1
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end subroutine s2
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