181 lines
2.6 KiB
Rust
181 lines
2.6 KiB
Rust
#![feature(tool_lints)]
|
|
|
|
#![allow(clippy::single_match, unused_assignments, unused_variables, clippy::while_immutable_condition)]
|
|
|
|
fn test1() {
|
|
let mut x = 0;
|
|
loop { // clippy::never_loop
|
|
x += 1;
|
|
if x == 1 {
|
|
return
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
fn test2() {
|
|
let mut x = 0;
|
|
loop {
|
|
x += 1;
|
|
if x == 1 {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
fn test3() {
|
|
let mut x = 0;
|
|
loop { // never loops
|
|
x += 1;
|
|
break
|
|
}
|
|
}
|
|
|
|
fn test4() {
|
|
let mut x = 1;
|
|
loop {
|
|
x += 1;
|
|
match x {
|
|
5 => return,
|
|
_ => (),
|
|
}
|
|
}
|
|
}
|
|
|
|
fn test5() {
|
|
let i = 0;
|
|
loop { // never loops
|
|
while i == 0 { // never loops
|
|
break
|
|
}
|
|
return
|
|
}
|
|
}
|
|
|
|
fn test6() {
|
|
let mut x = 0;
|
|
'outer: loop {
|
|
x += 1;
|
|
loop { // never loops
|
|
if x == 5 { break }
|
|
continue 'outer
|
|
}
|
|
return
|
|
}
|
|
}
|
|
|
|
fn test7() {
|
|
let mut x = 0;
|
|
loop {
|
|
x += 1;
|
|
match x {
|
|
1 => continue,
|
|
_ => (),
|
|
}
|
|
return
|
|
}
|
|
}
|
|
|
|
fn test8() {
|
|
let mut x = 0;
|
|
loop {
|
|
x += 1;
|
|
match x {
|
|
5 => return,
|
|
_ => continue,
|
|
}
|
|
}
|
|
}
|
|
|
|
fn test9() {
|
|
let x = Some(1);
|
|
while let Some(y) = x { // never loops
|
|
return
|
|
}
|
|
}
|
|
|
|
fn test10() {
|
|
for x in 0..10 { // never loops
|
|
match x {
|
|
1 => break,
|
|
_ => return,
|
|
}
|
|
}
|
|
}
|
|
|
|
fn test11<F: FnMut() -> i32>(mut f: F) {
|
|
loop {
|
|
return match f() {
|
|
1 => continue,
|
|
_ => (),
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn test12(a: bool, b: bool) {
|
|
'label: loop {
|
|
loop {
|
|
if a {
|
|
continue 'label;
|
|
}
|
|
if b {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
pub fn test13() {
|
|
let mut a = true;
|
|
loop { // infinite loop
|
|
while a {
|
|
if true {
|
|
a = false;
|
|
continue;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn test14() {
|
|
let mut a = true;
|
|
'outer: while a { // never loops
|
|
while a {
|
|
if a {
|
|
a = false;
|
|
continue
|
|
}
|
|
}
|
|
break 'outer;
|
|
}
|
|
}
|
|
|
|
// Issue #1991: the outter loop should not warn.
|
|
pub fn test15() {
|
|
'label: loop {
|
|
while false {
|
|
break 'label;
|
|
}
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
test1();
|
|
test2();
|
|
test3();
|
|
test4();
|
|
test5();
|
|
test6();
|
|
test7();
|
|
test8();
|
|
test9();
|
|
test10();
|
|
test11(|| 0);
|
|
test12(true, false);
|
|
test13();
|
|
test14();
|
|
}
|
|
|