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#![allow(
unused_variables,
unused_assignments,
clippy::similar_names,
clippy::disallowed_names,
clippy::branches_sharing_code,
clippy::needless_late_init
)]
#![warn(clippy::useless_let_if_seq)]
//@no-rustfix
fn f() -> bool {
true
}
fn g(x: i32) -> i32 {
x + 1
}
fn issue985() -> i32 {
let mut x = 42;
if f() {
x = g(x);
}
x
}
fn issue985_alt() -> i32 {
let mut x = 42;
if f() {
f();
} else {
x = g(x);
}
x
}
#[allow(clippy::manual_strip)]
fn issue975() -> String {
let mut udn = "dummy".to_string();
if udn.starts_with("uuid:") {
udn = String::from(&udn[5..]);
}
udn
}
fn early_return() -> u8 {
// FIXME: we could extend the lint to include such cases:
let foo;
if f() {
return 42;
} else {
foo = 0;
}
foo
}
fn allow_works() -> i32 {
#[allow(clippy::useless_let_if_seq)]
let x;
if true {
x = 1;
} else {
x = 2;
}
x
}
fn main() {
early_return();
issue975();
issue985();
issue985_alt();
let mut foo = 0;
//~^ useless_let_if_seq
if f() {
foo = 42;
}
let mut bar = 0;
//~^ useless_let_if_seq
if f() {
f();
bar = 42;
} else {
f();
}
let quz;
//~^ useless_let_if_seq
if f() {
quz = 42;
} else {
quz = 0;
}
// `toto` is used several times
let mut toto;
if f() {
toto = 42;
} else {
for i in &[1, 2] {
toto = *i;
}
toto = 2;
}
// found in libcore, the inner if is not a statement but the block's expr
let mut ch = b'x';
if f() {
ch = b'*';
if f() {
ch = b'?';
}
}
// baz needs to be mut
let mut baz = 0;
//~^ useless_let_if_seq
if f() {
baz = 42;
}
baz = 1337;
// issue 3043 - types with interior mutability should not trigger this lint
use std::cell::Cell;
let mut val = Cell::new(1);
if true {
val = Cell::new(2);
}
println!("{}", val.get());
}
|
