191d48723f
Establish a set of optional usage warnings, and enable some only in "-pedantic" mode that, in our subjective experience with application codes, seem to issue frequently without indicating usage that really needs to be corrected. By default, with this patch the compiler should appear to be somewhat less persnickety but not less informative. Differential Revision: https://reviews.llvm.org/D150710
184 lines
7.8 KiB
Fortran
184 lines
7.8 KiB
Fortran
! RUN: %python %S/test_errors.py %s %flang_fc1 -pedantic
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! Error tests for structure constructors: C1594 violations
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! from assigning globally-visible data to POINTER components.
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! test/Semantics/structconst04.f90 is this same test without type
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! parameters.
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module usefrom
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real, target :: usedfrom1
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end module usefrom
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module module1
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use usefrom
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implicit none
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type :: has_pointer1
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real, pointer :: ptop
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type(has_pointer1), allocatable :: link1 ! don't loop during analysis
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end type has_pointer1
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type :: has_pointer2
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type(has_pointer1) :: pnested
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type(has_pointer2), allocatable :: link2
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end type has_pointer2
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type, extends(has_pointer2) :: has_pointer3
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type(has_pointer3), allocatable :: link3
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end type has_pointer3
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type :: t1(k)
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integer, kind :: k
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real, pointer :: pt1
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type(t1(k)), allocatable :: link
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end type t1
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type :: t2(k)
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integer, kind :: k
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type(has_pointer1) :: hp1
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type(t2(k)), allocatable :: link
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end type t2
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type :: t3(k)
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integer, kind :: k
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type(has_pointer2) :: hp2
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type(t3(k)), allocatable :: link
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end type t3
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type :: t4(k)
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integer, kind :: k
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type(has_pointer3) :: hp3
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type(t4(k)), allocatable :: link
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end type t4
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real, target :: modulevar1 = 0.
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type(has_pointer1) :: modulevar2 = has_pointer1(modulevar1)
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type(has_pointer2) :: modulevar3 = has_pointer2(has_pointer1(modulevar1))
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type(has_pointer3) :: modulevar4 = has_pointer3(has_pointer1(modulevar1))
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contains
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pure subroutine ps1(dummy1, dummy2, dummy3, dummy4)
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real, target :: local1
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type(t1(0)) :: x1
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type(t2(0)) :: x2
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type(t3(0)) :: x3
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type(t4(0)) :: x4
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real, intent(in), target :: dummy1
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real, intent(inout), target :: dummy2
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real, pointer :: dummy3
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real, intent(inout), target :: dummy4[*]
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real, target :: commonvar1
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common /cblock/ commonvar1
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x1 = t1(0)(local1)
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!ERROR: Externally visible object 'usedfrom1' may not be associated with pointer component 'pt1' in a pure procedure
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x1 = t1(0)(usedfrom1)
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'pt1' in a pure procedure
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x1 = t1(0)(modulevar1)
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!ERROR: Externally visible object 'cblock' may not be associated with pointer component 'pt1' in a pure procedure
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x1 = t1(0)(commonvar1)
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!ERROR: Externally visible object 'dummy1' may not be associated with pointer component 'pt1' in a pure procedure
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x1 = t1(0)(dummy1)
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x1 = t1(0)(dummy2)
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x1 = t1(0)(dummy3)
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! TODO when semantics handles coindexing:
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! TODO !ERROR: Externally visible object may not be associated with a pointer in a pure procedure
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! TODO x1 = t1(0)(dummy4[0])
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x1 = t1(0)(dummy4)
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'ptop' in a pure procedure
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x2 = t2(0)(has_pointer1(modulevar1))
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'ptop' in a pure procedure
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x3 = t3(0)(has_pointer2(has_pointer1(modulevar1)))
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'ptop' in a pure procedure
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x4 = t4(0)(has_pointer3(has_pointer1(modulevar1)))
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!ERROR: The externally visible object 'modulevar2' may not be used in a pure procedure as the value for component 'hp1' which has the pointer component 'ptop'
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x2 = t2(0)(modulevar2)
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!ERROR: The externally visible object 'modulevar3' may not be used in a pure procedure as the value for component 'hp2' which has the pointer component 'ptop'
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x3 = t3(0)(modulevar3)
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!ERROR: The externally visible object 'modulevar4' may not be used in a pure procedure as the value for component 'hp3' which has the pointer component 'ptop'
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x4 = t4(0)(modulevar4)
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contains
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pure subroutine subr(dummy1a, dummy2a, dummy3a, dummy4a)
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real, target :: local1a
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type(t1(0)) :: x1a
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type(t2(0)) :: x2a
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type(t3(0)) :: x3a
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type(t4(0)) :: x4a
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real, intent(in), target :: dummy1a
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real, intent(inout), target :: dummy2a
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real, pointer :: dummy3a
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real, intent(inout), target :: dummy4a[*]
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x1a = t1(0)(local1a)
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!ERROR: Externally visible object 'usedfrom1' may not be associated with pointer component 'pt1' in a pure procedure
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x1a = t1(0)(usedfrom1)
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'pt1' in a pure procedure
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x1a = t1(0)(modulevar1)
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!ERROR: Externally visible object 'commonvar1' may not be associated with pointer component 'pt1' in a pure procedure
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x1a = t1(0)(commonvar1)
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!ERROR: Externally visible object 'dummy1' may not be associated with pointer component 'pt1' in a pure procedure
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x1a = t1(0)(dummy1)
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!ERROR: Externally visible object 'dummy1a' may not be associated with pointer component 'pt1' in a pure procedure
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x1a = t1(0)(dummy1a)
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x1a = t1(0)(dummy2a)
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x1a = t1(0)(dummy3)
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x1a = t1(0)(dummy3a)
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! TODO when semantics handles coindexing:
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! TODO !ERROR: Externally visible object may not be associated with a pointer in a pure procedure
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! TODO x1a = t1(0)(dummy4a[0])
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x1a = t1(0)(dummy4a)
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'ptop' in a pure procedure
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x2a = t2(0)(has_pointer1(modulevar1))
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'ptop' in a pure procedure
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x3a = t3(0)(has_pointer2(has_pointer1(modulevar1)))
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!ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'ptop' in a pure procedure
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x4a = t4(0)(has_pointer3(has_pointer1(modulevar1)))
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!ERROR: The externally visible object 'modulevar2' may not be used in a pure procedure as the value for component 'hp1' which has the pointer component 'ptop'
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x2a = t2(0)(modulevar2)
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!ERROR: The externally visible object 'modulevar3' may not be used in a pure procedure as the value for component 'hp2' which has the pointer component 'ptop'
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x3a = t3(0)(modulevar3)
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!ERROR: The externally visible object 'modulevar4' may not be used in a pure procedure as the value for component 'hp3' which has the pointer component 'ptop'
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x4a = t4(0)(modulevar4)
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end subroutine subr
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end subroutine
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pure integer function pf1(dummy3)
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real, pointer :: dummy3
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type(t1(0)) :: x1
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pf1 = 0
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!ERROR: Externally visible object 'dummy3' may not be associated with pointer component 'pt1' in a pure procedure
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x1 = t1(0)(dummy3)
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contains
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pure subroutine subr(dummy3a)
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real, pointer :: dummy3a
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type(t1(0)) :: x1a
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!ERROR: Externally visible object 'dummy3' may not be associated with pointer component 'pt1' in a pure procedure
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x1a = t1(0)(dummy3)
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x1a = t1(0)(dummy3a)
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end subroutine
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end function
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impure real function ipf1(dummy1, dummy2, dummy3, dummy4)
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real, target :: local1
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type(t1(0)) :: x1
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type(t2(0)) :: x2
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type(t3(0)) :: x3
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type(t4(0)) :: x4
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real, intent(in), target :: dummy1
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real, intent(inout), target :: dummy2
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real, pointer :: dummy3
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real, intent(inout), target :: dummy4[*]
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real, target :: commonvar1
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common /cblock/ commonvar1
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ipf1 = 0.
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x1 = t1(0)(local1)
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x1 = t1(0)(usedfrom1)
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x1 = t1(0)(modulevar1)
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x1 = t1(0)(commonvar1)
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!WARNING: Pointer target is not a definable variable
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!BECAUSE: 'dummy1' is an INTENT(IN) dummy argument
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x1 = t1(0)(dummy1)
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x1 = t1(0)(dummy2)
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x1 = t1(0)(dummy3)
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! TODO when semantics handles coindexing:
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! TODO x1 = t1(0)(dummy4[0])
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x1 = t1(0)(dummy4)
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x2 = t2(0)(has_pointer1(modulevar1))
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x3 = t3(0)(has_pointer2(has_pointer1(modulevar1)))
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x4 = t4(0)(has_pointer3(has_pointer1(modulevar1)))
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x2 = t2(0)(modulevar2)
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x3 = t3(0)(modulevar3)
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x4 = t4(0)(modulevar4)
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end function ipf1
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end module module1
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