forked from OSchip/llvm-project
162 lines
6.8 KiB
Fortran
162 lines
6.8 KiB
Fortran
! RUN: %S/test_errors.sh %s %t %flang_fc1
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! Check for semantic errors in ALLOCATE statements
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! TODO: Function Pointer in allocate and derived types!
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! Rules I should know when working with coarrays and derived type:
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! C736: If EXTENDS appears and the type being defined has a coarray ultimate
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! component, its parent type shall have a coarray ultimate component.
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! C746: (R737) If a coarray-spec appears, it shall be a deferred-coshape-spec-list
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! and the component shall have the ALLOCATABLE attribute.
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! C747: If a coarray-spec appears, the component shall not be of type C_PTR or
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! C_FUNPTR from the intrinsic module ISO_C_BINDING (18.2), or of type TEAM_TYPE from the
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! intrinsic module ISO_FORTRAN_ENV (16.10.2).
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! C748: A data component whose type has a coarray ultimate component shall be a
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! nonpointer nonallocatable scalar and shall not be a coarray.
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! 7.5.4.3 Coarray components
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! 7.5.6 Final subroutines: C786
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! C825 An entity whose type has a coarray ultimate component shall be a
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! nonpointer nonallocatable scalar, shall not be a coarray, and shall not be a function result.
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! C826 A coarray or an object with a coarray ultimate component shall be an
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! associate name, a dummy argument, or have the ALLOCATABLE or SAVE attribute.
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subroutine C937(var)
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! Type-spec shall not specify a type that has a coarray ultimate component.
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type A
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real, allocatable :: x[:]
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end type
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type B
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type(A) y
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!ERROR: A component with a POINTER or ALLOCATABLE attribute may not be of a type with a coarray ultimate component (named 'y%x')
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type(B), pointer :: forward
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real :: u
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end type
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type C
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type(B) z
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end type
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type D
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!ERROR: A component with a POINTER or ALLOCATABLE attribute may not be of a type with a coarray ultimate component (named 'x')
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type(A), pointer :: potential
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end type
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class(*), allocatable :: var
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! unlimited polymorphic is the ONLY way to get an allocatable/pointer 'var' that can be
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! allocated with a type-spec T that has coarray ultimate component without
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! violating other rules than C937.
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! Rationale:
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! C934 => var must be type compatible with T.
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! => var type is T, a type P extended by T, or unlimited polymorphic
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! C825 => var cannot be of type T.
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! C736 => all parent types P of T must have a coarray ultimate component
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! => var cannot be of type P (C825)
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! => if var can be defined, it can only be unlimited polymorphic
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! Also, as per C826 or C852, var can only be an allocatable, not a pointer
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! OK, x is not an ultimate component
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allocate(D:: var)
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!ERROR: Type-spec in ALLOCATE must not specify a type with a coarray ultimate component
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allocate(A:: var)
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!ERROR: Type-spec in ALLOCATE must not specify a type with a coarray ultimate component
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allocate(B:: var)
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!ERROR: Type-spec in ALLOCATE must not specify a type with a coarray ultimate component
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allocate(C:: var)
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end subroutine
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!TODO: type extending team_type !? subcomponents !?
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subroutine C938_C947(var2, ptr, ptr2, fptr, my_team, srca)
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! If an allocate-object is a coarray, type-spec shall not specify type C_PTR or
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! C_FUNPTR from the intrinsic module ISO_C_BINDING, or type TEAM_TYPE from the intrinsic module
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! ISO_FORTRAN_ENV.
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use ISO_FORTRAN_ENV
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use ISO_C_BINDING
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type A(k, l)
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integer, kind :: k
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integer, len :: l
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real(kind=k) x(l,l)
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end type
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! Again, I do not see any other way to violate this rule and not others without
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! having var being an unlimited polymorphic.
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! Suppose var of type P and T, the type in type-spec
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! Per C934, P must be compatible with T. P cannot be a forbidden type per C824.
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! Per C728 and 7.5.7.1, P cannot extend a c_ptr or _c_funptr. hence, P has to be
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! unlimited polymorphic or a type that extends TEAM_TYPE.
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class(*), allocatable :: var[:], var2(:)[:]
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class(*), allocatable :: varok, varok2(:)
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Type(C_PTR) :: ptr, ptr2(2:10)
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Type(C_FUNPTR) fptr
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Type(TEAM_TYPE) my_team
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Type(A(4, 10)) :: srca
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! Valid constructs
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allocate(real:: var[5:*])
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allocate(A(4, 10):: var[5:*])
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allocate(TEAM_TYPE:: varok, varok2(2))
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allocate(C_PTR:: varok, varok2(2))
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allocate(C_FUNPTR:: varok, varok2(2))
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!ERROR: Type-Spec in ALLOCATE must not be TEAM_TYPE from ISO_FORTRAN_ENV when an allocatable object is a coarray
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allocate(TEAM_TYPE:: var[5:*])
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!ERROR: Type-Spec in ALLOCATE must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(C_PTR:: varok, var[5:*])
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!ERROR: Type-Spec in ALLOCATE must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(C_FUNPTR:: var[5:*])
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!ERROR: Type-Spec in ALLOCATE must not be TEAM_TYPE from ISO_FORTRAN_ENV when an allocatable object is a coarray
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allocate(TEAM_TYPE:: var2(2)[5:*])
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!ERROR: Type-Spec in ALLOCATE must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(C_PTR:: var2(2)[5:*])
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!ERROR: Type-Spec in ALLOCATE must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(C_FUNPTR:: varok2(2), var2(2)[5:*])
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! C947: The declared type of source-expr shall not be C_PTR or C_FUNPTR from the
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! intrinsic module ISO_C_BINDING, or TEAM_TYPE from the intrinsic module
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! ISO_FORTRAN_ENV, if an allocateobject is a coarray.
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!
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! ! Valid constructs
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allocate(var[5:*], SOURCE=cos(0.5_4))
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allocate(var[5:*], MOLD=srca)
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allocate(varok, varok2(2), SOURCE=ptr)
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allocate(varok2, MOLD=ptr2)
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allocate(varok, varok2(2), SOURCE=my_team)
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allocate(varok, varok2(2), MOLD=fptr)
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!ERROR: SOURCE or MOLD expression type must not be TEAM_TYPE from ISO_FORTRAN_ENV when an allocatable object is a coarray
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allocate(var[5:*], SOURCE=my_team)
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!ERROR: SOURCE or MOLD expression type must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(var[5:*], SOURCE=ptr)
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!ERROR: SOURCE or MOLD expression type must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(varok, var[5:*], MOLD=ptr2(1))
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!ERROR: SOURCE or MOLD expression type must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(var[5:*], MOLD=fptr)
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!ERROR: SOURCE or MOLD expression type must not be TEAM_TYPE from ISO_FORTRAN_ENV when an allocatable object is a coarray
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allocate(var2(2)[5:*], MOLD=my_team)
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!ERROR: SOURCE or MOLD expression type must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(var2(2)[5:*], MOLD=ptr)
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!ERROR: SOURCE or MOLD expression type must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(var2(2)[5:*], SOURCE=ptr2)
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!ERROR: SOURCE or MOLD expression type must not be C_PTR or C_FUNPTR from ISO_C_BINDING when an allocatable object is a coarray
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allocate(varok2(2), var2(2)[5:*], SOURCE=fptr)
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end subroutine
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