flang/test/Semantics/structconst03.f90

   1 ! RUN: %python %S/test_errors.py %s %flang_fc1
   2 ! Error tests for structure constructors: C1594 violations
   3 ! from assigning globally-visible data to POINTER components.
   4 ! test/Semantics/structconst04.f90 is this same test without type
   5 ! parameters.
   6
   7 module usefrom
   8   real, target :: usedfrom1
   9 end module usefrom
  10
  11 module module1
  12   use usefrom
  13   implicit none
  14   type :: has_pointer1
  15     real, pointer :: ptop
  16     type(has_pointer1), allocatable :: link1 ! don't loop during analysis
  17   end type has_pointer1
  18   type :: has_pointer2
  19     type(has_pointer1) :: pnested
  20     type(has_pointer2), allocatable :: link2
  21   end type has_pointer2
  22   type, extends(has_pointer2) :: has_pointer3
  23     type(has_pointer3), allocatable :: link3
  24   end type has_pointer3
  25   type :: t1(k)
  26     integer, kind :: k
  27     real, pointer :: pt1
  28     type(t1(k)), allocatable :: link
  29   end type t1
  30   type :: t2(k)
  31     integer, kind :: k
  32     type(has_pointer1) :: hp1
  33     type(t2(k)), allocatable :: link
  34   end type t2
  35   type :: t3(k)
  36     integer, kind :: k
  37     type(has_pointer2) :: hp2
  38     type(t3(k)), allocatable :: link
  39   end type t3
  40   type :: t4(k)
  41     integer, kind :: k
  42     type(has_pointer3) :: hp3
  43     type(t4(k)), allocatable :: link
  44   end type t4
  45   real, target :: modulevar1
  46   type(has_pointer1) :: modulevar2
  47   type(has_pointer2) :: modulevar3
  48   type(has_pointer3) :: modulevar4
  49
  50  contains
  51
  52   pure subroutine ps1(dummy1, dummy2, dummy3, dummy4)
  53     real, target :: local1
  54     type(t1(0)) :: x1
  55     type(t2(0)) :: x2
  56     type(t3(0)) :: x3
  57     type(t4(0)) :: x4
  58     real, intent(in), target :: dummy1
  59     real, intent(inout), target :: dummy2
  60     real, pointer :: dummy3
  61     real, intent(inout), target :: dummy4[*]
  62     real, target :: commonvar1
  63     common /cblock/ commonvar1
  64     x1 = t1(0)(local1)
  65     !ERROR: Externally visible object 'usedfrom1' may not be associated with pointer component 'pt1' in a pure procedure
  66     x1 = t1(0)(usedfrom1)
  67     !ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'pt1' in a pure procedure
  68     x1 = t1(0)(modulevar1)
  69     !ERROR: Externally visible object 'cblock' may not be associated with pointer component 'pt1' in a pure procedure
  70     x1 = t1(0)(commonvar1)
  71     !ERROR: Externally visible object 'dummy1' may not be associated with pointer component 'pt1' in a pure procedure
  72     x1 = t1(0)(dummy1)
  73     x1 = t1(0)(dummy2)
  74     x1 = t1(0)(dummy3)
  75 ! TODO when semantics handles coindexing:
  76 ! TODO !ERROR: Externally visible object may not be associated with a pointer in a pure procedure
  77 ! TODO x1 = t1(0)(dummy4[0])
  78     x1 = t1(0)(dummy4)
  79     !ERROR: Externally visible object 'modulevar2' may not be associated with pointer component 'ptop' in a pure procedure
  80     x2 = t2(0)(modulevar2)
  81     !ERROR: Externally visible object 'modulevar3' may not be associated with pointer component 'ptop' in a pure procedure
  82     x3 = t3(0)(modulevar3)
  83     !ERROR: Externally visible object 'modulevar4' may not be associated with pointer component 'ptop' in a pure procedure
  84     x4 = t4(0)(modulevar4)
  85    contains
  86     pure subroutine subr(dummy1a, dummy2a, dummy3a, dummy4a)
  87       real, target :: local1a
  88       type(t1(0)) :: x1a
  89       type(t2(0)) :: x2a
  90       type(t3(0)) :: x3a
  91       type(t4(0)) :: x4a
  92       real, intent(in), target :: dummy1a
  93       real, intent(inout), target :: dummy2a
  94       real, pointer :: dummy3a
  95       real, intent(inout), target :: dummy4a[*]
  96       x1a = t1(0)(local1a)
  97       !ERROR: Externally visible object 'usedfrom1' may not be associated with pointer component 'pt1' in a pure procedure
  98       x1a = t1(0)(usedfrom1)
  99       !ERROR: Externally visible object 'modulevar1' may not be associated with pointer component 'pt1' in a pure procedure
 100       x1a = t1(0)(modulevar1)
 101       !ERROR: Externally visible object 'commonvar1' may not be associated with pointer component 'pt1' in a pure procedure
 102       x1a = t1(0)(commonvar1)
 103       !ERROR: Externally visible object 'dummy1' may not be associated with pointer component 'pt1' in a pure procedure
 104       x1a = t1(0)(dummy1)
 105       !ERROR: Externally visible object 'dummy1a' may not be associated with pointer component 'pt1' in a pure procedure
 106       x1a = t1(0)(dummy1a)
 107       x1a = t1(0)(dummy2a)
 108       x1a = t1(0)(dummy3)
 109       x1a = t1(0)(dummy3a)
 110 ! TODO when semantics handles coindexing:
 111 ! TODO !ERROR: Externally visible object may not be associated with a pointer in a pure procedure
 112 ! TODO x1a = t1(0)(dummy4a[0])
 113       x1a = t1(0)(dummy4a)
 114       !ERROR: Externally visible object 'modulevar2' may not be associated with pointer component 'ptop' in a pure procedure
 115       x2a = t2(0)(modulevar2)
 116       !ERROR: Externally visible object 'modulevar3' may not be associated with pointer component 'ptop' in a pure procedure
 117       x3a = t3(0)(modulevar3)
 118       !ERROR: Externally visible object 'modulevar4' may not be associated with pointer component 'ptop' in a pure procedure
 119       x4a = t4(0)(modulevar4)
 120     end subroutine subr
 121   end subroutine
 122
 123   pure integer function pf1(dummy3)
 124     real, pointer :: dummy3
 125     type(t1(0)) :: x1
 126     pf1 = 0
 127     !ERROR: Externally visible object 'dummy3' may not be associated with pointer component 'pt1' in a pure procedure
 128     x1 = t1(0)(dummy3)
 129    contains
 130     pure subroutine subr(dummy3a)
 131       real, pointer :: dummy3a
 132       type(t1(0)) :: x1a
 133       !ERROR: Externally visible object 'dummy3' may not be associated with pointer component 'pt1' in a pure procedure
 134       x1a = t1(0)(dummy3)
 135       x1a = t1(0)(dummy3a)
 136     end subroutine
 137   end function
 138
 139   impure real function ipf1(dummy1, dummy2, dummy3, dummy4)
 140     real, target :: local1
 141     type(t1(0)) :: x1
 142     type(t2(0)) :: x2
 143     type(t3(0)) :: x3
 144     type(t4(0)) :: x4
 145     real, intent(in), target :: dummy1
 146     real, intent(inout), target :: dummy2
 147     real, pointer :: dummy3
 148     real, intent(inout), target :: dummy4[*]
 149     real, target :: commonvar1
 150     common /cblock/ commonvar1
 151     ipf1 = 0.
 152     x1 = t1(0)(local1)
 153     x1 = t1(0)(usedfrom1)
 154     x1 = t1(0)(modulevar1)
 155     x1 = t1(0)(commonvar1)
 156     x1 = t1(0)(dummy1)
 157     x1 = t1(0)(dummy2)
 158     x1 = t1(0)(dummy3)
 159 ! TODO when semantics handles coindexing:
 160 ! TODO x1 = t1(0)(dummy4[0])
 161     x1 = t1(0)(dummy4)
 162     x2 = t2(0)(modulevar2)
 163     x3 = t3(0)(modulevar3)
 164     x4 = t4(0)(modulevar4)
 165   end function ipf1
 166 end module module1