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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
// run-pass
#![deny(rust_2021_incompatible_closure_captures)]
#[derive(Debug)]
struct Foo(i32);
impl Drop for Foo {
fn drop(&mut self) {
println!("{:?} dropped", self.0);
}
}
struct ConstainsDropField(Foo, Foo);
// Test that if all paths starting at root variable that implement Drop are captured
// then it doesn't trigger the lint.
fn test_precise_analysis_simple_1() {
let t = (Foo(10), Foo(20), Foo(30));
let c = || {
let _t = t.0;
let _t = t.1;
let _t = t.2;
};
c();
}
// Test that if all paths starting at root variable that implement Drop are captured
// then it doesn't trigger the lint.
fn test_precise_analysis_simple_2() {
let t = ConstainsDropField(Foo(10), Foo(20));
let c = || {
let _t = t.0;
let _t = t.1;
};
c();
}
#[derive(Debug)]
struct ContainsAndImplsDrop(Foo);
impl Drop for ContainsAndImplsDrop {
fn drop(&mut self) {
println!("{:?} dropped", self.0);
}
}
// If a path isn't directly captured but requires Drop, then this tests that migrations aren't
// needed if the a parent to that path is captured.
fn test_precise_analysis_parent_captured_1() {
let t = ConstainsDropField(Foo(10), Foo(20));
let c = || {
let _t = t;
};
c();
}
// If a path isn't directly captured but requires Drop, then this tests that migrations aren't
// needed if the a parent to that path is captured.
fn test_precise_analysis_parent_captured_2() {
let t = ContainsAndImplsDrop(Foo(10));
let c = || {
let _t = t;
};
c();
}
struct S;
impl Drop for S {
fn drop(&mut self) {}
}
struct T(S, S);
struct U(T, T);
// Test that if the path is longer than just one element, precise analysis works correctly.
fn test_precise_analysis_long_path() {
let u = U(T(S, S), T(S, S));
let c = || {
let _x = u.0.0;
let _x = u.0.1;
let _x = u.1.0;
let _x = u.1.1;
};
c();
}
fn main() {
test_precise_analysis_simple_1();
test_precise_analysis_simple_2();
test_precise_analysis_parent_captured_1();
test_precise_analysis_parent_captured_2();
test_precise_analysis_long_path();
}
|
