1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
! Test self-referencing array section assignments with --realloc-lhs-arrays
! This tests the fix for use-after-free when arr = arr(i:j) causes realloc
! to free/move memory before the copy completes.
program array_section_08
implicit none
call test_simple_array()
call test_struct_array()
print *, "PASS"
contains
subroutine test_simple_array()
real, allocatable :: arr(:)
integer :: i
allocate(arr(5))
do i = 1, 5
arr(i) = real(i * 10)
end do
arr = arr(3:5) ! Self-referencing - was causing use-after-free
if (size(arr) /= 3) error stop "simple: size should be 3"
if (arr(1) /= 30.0) error stop "simple: arr(1) should be 30"
if (arr(2) /= 40.0) error stop "simple: arr(2) should be 40"
if (arr(3) /= 50.0) error stop "simple: arr(3) should be 50"
end subroutine
subroutine test_struct_array()
type :: item_t
character(len=:), allocatable :: name
integer :: value
end type item_t
type(item_t), allocatable :: items(:)
integer :: i
allocate(items(3))
do i = 1, 3
allocate(character(len=10) :: items(i)%name)
items(i)%name = "item" // char(48 + i)
items(i)%value = i * 10
end do
items = items(2:3) ! Self-referencing struct array
if (size(items) /= 2) error stop "struct: size should be 2"
if (items(1)%value /= 20) error stop "struct: items(1)%value should be 20"
if (items(2)%value /= 30) error stop "struct: items(2)%value should be 30"
end subroutine
end program array_section_08
|
