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! RUN: not %flang_fc1 -fsyntax-only %s 2>&1 | FileCheck %s
! Test WhyNotModifiable() explanations
module prot
real, protected :: prot
type :: ptype
real, pointer :: ptr
real :: x
end type
type(ptype), protected :: protptr
contains
subroutine ok
prot = 0. ! ok
end subroutine
end module
module m
use iso_fortran_env
use prot
type :: t1
type(lock_type) :: lock
end type
type :: t2
type(t1) :: x1
real :: x2
end type
type(t2) :: t2static
character(*), parameter :: internal = '0'
contains
subroutine test1(dummy)
real :: arr(2)
integer, parameter :: j3 = 666
type(ptype), intent(in) :: dummy
type(t2) :: t2var
associate (a => 3+4)
!CHECK: error: Input variable 'a' must be definable
!CHECK: 'a' is construct associated with an expression
read(internal,*) a
end associate
associate (a => arr([1])) ! vector subscript
!CHECK: error: Input variable 'a' must be definable
!CHECK: 'a' is construct associated with an expression
read(internal,*) a
end associate
associate (a => arr(2:1:-1))
read(internal,*) a ! ok
end associate
!CHECK: error: Input variable 'j3' must be definable
!CHECK: '666_4' is not a variable
read(internal,*) j3
!CHECK: error: Left-hand side of assignment is not modifiable
!CHECK: 't2var' is an entity with either an EVENT_TYPE or LOCK_TYPE
t2var = t2static
t2var%x2 = 0. ! ok
!CHECK: error: Left-hand side of assignment is not modifiable
!CHECK: 'prot' is protected in this scope
prot = 0.
protptr%ptr = 0. ! ok
!CHECK: error: Left-hand side of assignment is not modifiable
!CHECK: 'dummy' is an INTENT(IN) dummy argument
dummy%x = 0.
dummy%ptr = 0. ! ok
end subroutine
pure subroutine test2(ptr)
integer, pointer, intent(in) :: ptr
!CHECK: error: Input variable 'ptr' must be definable
!CHECK: 'ptr' is externally visible and referenced in a pure procedure
read(internal,*) ptr
end subroutine
end module
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