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
|
#![warn(clippy::only_used_in_recursion)]
fn _with_inner(flag: u32, a: u32, b: u32) -> usize {
fn inner(flag: u32, a: u32) -> u32 {
if flag == 0 { 0 } else { inner(flag, a) }
}
let x = inner(flag, a);
if flag == 0 { 0 } else { _with_inner(flag, a, b + x) }
}
fn _with_closure(a: Option<u32>, b: u32, f: impl Fn(u32, u32) -> Option<u32>) -> u32 {
if let Some(x) = a.and_then(|x| f(x, x)) {
_with_closure(Some(x), b, f)
} else {
0
}
}
// Issue #8560
trait D {
fn foo(&mut self, arg: u32) -> u32;
}
mod m {
pub struct S(u32);
impl S {
pub fn foo(&mut self, arg: u32) -> u32 {
arg + self.0
}
}
}
impl D for m::S {
fn foo(&mut self, arg: u32) -> u32 {
self.foo(arg)
}
}
// Issue #8782
fn only_let(x: u32) {
let y = 10u32;
let _z = x * y;
}
trait E<T: E<()>> {
fn method(flag: u32, a: usize) -> usize {
if flag == 0 {
0
} else {
<T as E<()>>::method(flag - 1, a)
}
}
}
impl E<()> for () {
fn method(flag: u32, a: usize) -> usize {
if flag == 0 { 0 } else { a }
}
}
fn overwritten_param(flag: u32, mut a: usize) -> usize {
if flag == 0 {
return 0;
} else if flag > 5 {
a += flag as usize;
} else {
a = 5;
}
overwritten_param(flag, a)
}
fn field_direct(flag: u32, mut a: (usize,)) -> usize {
if flag == 0 {
0
} else {
a.0 += 5;
field_direct(flag - 1, a)
}
}
fn field_deref(flag: u32, a: &mut Box<(usize,)>) -> usize {
if flag == 0 {
0
} else {
a.0 += 5;
field_deref(flag - 1, a)
}
}
fn main() {}
|
