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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![deny(unconditional_recursion)]
//~^ NOTE lint level defined here
#![allow(dead_code)]
fn foo() { //~ ERROR function cannot return without recurring
foo(); //~ NOTE recursive call site
}
fn bar() {
if true {
bar()
}
}
fn baz() { //~ ERROR function cannot return without recurring
if true {
baz() //~ NOTE recursive call site
} else {
baz() //~ NOTE recursive call site
}
}
fn qux() {
loop {}
}
fn quz() -> bool { //~ ERROR function cannot return without recurring
if true {
while quz() {} //~ NOTE recursive call site
true
} else {
loop { quz(); } //~ NOTE recursive call site
}
}
// Trait method calls.
trait Foo {
fn bar(&self) { //~ ERROR function cannot return without recurring
self.bar() //~ NOTE recursive call site
}
}
impl Foo for Box<Foo+'static> {
fn bar(&self) { //~ ERROR function cannot return without recurring
loop {
self.bar() //~ NOTE recursive call site
}
}
}
// Trait method call with integer fallback after method resolution.
impl Foo for i32 {
fn bar(&self) { //~ ERROR function cannot return without recurring
0.bar() //~ NOTE recursive call site
}
}
impl Foo for u32 {
fn bar(&self) {
0.bar()
}
}
// Trait method calls via paths.
trait Foo2 {
fn bar(&self) { //~ ERROR function cannot return without recurring
Foo2::bar(self) //~ NOTE recursive call site
}
}
impl Foo2 for Box<Foo2+'static> {
fn bar(&self) { //~ ERROR function cannot return without recurring
loop {
Foo2::bar(self) //~ NOTE recursive call site
}
}
}
struct Baz;
impl Baz {
// Inherent method call.
fn qux(&self) { //~ ERROR function cannot return without recurring
self.qux(); //~ NOTE recursive call site
}
// Inherent method call via path.
fn as_ref(&self) -> &Self { //~ ERROR function cannot return without recurring
Baz::as_ref(self) //~ NOTE recursive call site
}
}
// Trait method calls to impls via paths.
impl Default for Baz {
fn default() -> Baz { //~ ERROR function cannot return without recurring
let x = Default::default(); //~ NOTE recursive call site
x
}
}
// Overloaded operators.
impl std::ops::Deref for Baz {
type Target = ();
fn deref(&self) -> &() { //~ ERROR function cannot return without recurring
&**self //~ NOTE recursive call site
}
}
impl std::ops::Index<usize> for Baz {
type Output = Baz;
fn index(&self, x: usize) -> &Baz { //~ ERROR function cannot return without recurring
&self[x] //~ NOTE recursive call site
}
}
// Overloaded autoderef.
struct Quux;
impl std::ops::Deref for Quux {
type Target = Baz;
fn deref(&self) -> &Baz { //~ ERROR function cannot return without recurring
self.as_ref() //~ NOTE recursive call site
}
}
fn all_fine() {
let _f = all_fine;
}
// issue 26333
trait Bar {
fn method<T: Bar>(&self, x: &T) {
x.method(x)
}
}
fn main() {}
|
