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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
11 | #![deny(unconditional_recursion)] | |
54a0048b SL |
12 | //~^ NOTE lint level defined here |
13 | //~| NOTE lint level defined here | |
14 | //~| NOTE lint level defined here | |
15 | //~| NOTE lint level defined here | |
16 | //~| NOTE lint level defined here | |
17 | //~| NOTE lint level defined here | |
18 | //~| NOTE lint level defined here | |
19 | //~| NOTE lint level defined here | |
20 | //~| NOTE lint level defined here | |
21 | //~| NOTE lint level defined here | |
22 | //~| NOTE lint level defined here | |
23 | //~| NOTE lint level defined here | |
24 | //~| NOTE lint level defined here | |
25 | //~| NOTE lint level defined here | |
85aaf69f SL |
26 | #![allow(dead_code)] |
27 | fn foo() { //~ ERROR function cannot return without recurring | |
28 | foo(); //~ NOTE recursive call site | |
29 | } | |
30 | ||
31 | fn bar() { | |
32 | if true { | |
33 | bar() | |
34 | } | |
35 | } | |
36 | ||
37 | fn baz() { //~ ERROR function cannot return without recurring | |
38 | if true { | |
39 | baz() //~ NOTE recursive call site | |
40 | } else { | |
41 | baz() //~ NOTE recursive call site | |
42 | } | |
43 | } | |
44 | ||
45 | fn qux() { | |
46 | loop {} | |
47 | } | |
48 | ||
49 | fn quz() -> bool { //~ ERROR function cannot return without recurring | |
50 | if true { | |
51 | while quz() {} //~ NOTE recursive call site | |
52 | true | |
53 | } else { | |
54 | loop { quz(); } //~ NOTE recursive call site | |
55 | } | |
56 | } | |
57 | ||
c1a9b12d | 58 | // Trait method calls. |
85aaf69f SL |
59 | trait Foo { |
60 | fn bar(&self) { //~ ERROR function cannot return without recurring | |
61 | self.bar() //~ NOTE recursive call site | |
62 | } | |
63 | } | |
64 | ||
65 | impl Foo for Box<Foo+'static> { | |
66 | fn bar(&self) { //~ ERROR function cannot return without recurring | |
67 | loop { | |
68 | self.bar() //~ NOTE recursive call site | |
69 | } | |
70 | } | |
c1a9b12d SL |
71 | } |
72 | ||
73 | // Trait method call with integer fallback after method resolution. | |
74 | impl Foo for i32 { | |
75 | fn bar(&self) { //~ ERROR function cannot return without recurring | |
76 | 0.bar() //~ NOTE recursive call site | |
77 | } | |
78 | } | |
79 | ||
80 | impl Foo for u32 { | |
81 | fn bar(&self) { | |
82 | 0.bar() | |
83 | } | |
84 | } | |
85 | ||
86 | // Trait method calls via paths. | |
87 | trait Foo2 { | |
88 | fn bar(&self) { //~ ERROR function cannot return without recurring | |
89 | Foo2::bar(self) //~ NOTE recursive call site | |
90 | } | |
91 | } | |
85aaf69f | 92 | |
c1a9b12d SL |
93 | impl Foo2 for Box<Foo2+'static> { |
94 | fn bar(&self) { //~ ERROR function cannot return without recurring | |
95 | loop { | |
96 | Foo2::bar(self) //~ NOTE recursive call site | |
97 | } | |
98 | } | |
85aaf69f SL |
99 | } |
100 | ||
101 | struct Baz; | |
102 | impl Baz { | |
c1a9b12d | 103 | // Inherent method call. |
85aaf69f SL |
104 | fn qux(&self) { //~ ERROR function cannot return without recurring |
105 | self.qux(); //~ NOTE recursive call site | |
106 | } | |
c1a9b12d SL |
107 | |
108 | // Inherent method call via path. | |
109 | fn as_ref(&self) -> &Self { //~ ERROR function cannot return without recurring | |
110 | Baz::as_ref(self) //~ NOTE recursive call site | |
111 | } | |
112 | } | |
113 | ||
114 | // Trait method calls to impls via paths. | |
115 | impl Default for Baz { | |
116 | fn default() -> Baz { //~ ERROR function cannot return without recurring | |
117 | let x = Default::default(); //~ NOTE recursive call site | |
118 | x | |
119 | } | |
120 | } | |
121 | ||
122 | // Overloaded operators. | |
123 | impl std::ops::Deref for Baz { | |
124 | type Target = (); | |
125 | fn deref(&self) -> &() { //~ ERROR function cannot return without recurring | |
126 | &**self //~ NOTE recursive call site | |
127 | } | |
128 | } | |
129 | ||
130 | impl std::ops::Index<usize> for Baz { | |
131 | type Output = Baz; | |
132 | fn index(&self, x: usize) -> &Baz { //~ ERROR function cannot return without recurring | |
133 | &self[x] //~ NOTE recursive call site | |
134 | } | |
135 | } | |
136 | ||
137 | // Overloaded autoderef. | |
138 | struct Quux; | |
139 | impl std::ops::Deref for Quux { | |
140 | type Target = Baz; | |
141 | fn deref(&self) -> &Baz { //~ ERROR function cannot return without recurring | |
142 | self.as_ref() //~ NOTE recursive call site | |
143 | } | |
144 | } | |
145 | ||
146 | fn all_fine() { | |
147 | let _f = all_fine; | |
148 | } | |
149 | ||
150 | // issue 26333 | |
151 | trait Bar { | |
152 | fn method<T: Bar>(&self, x: &T) { | |
153 | x.method(x) | |
154 | } | |
85aaf69f SL |
155 | } |
156 | ||
157 | fn main() {} |