129 lines
2.2 KiB
Rust
129 lines
2.2 KiB
Rust
#![allow(
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clippy::deref_addrof,
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dead_code,
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unused,
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clippy::no_effect,
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clippy::unnecessary_struct_initialization
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)]
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#![warn(clippy::unnecessary_operation)]
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use std::fmt::Display;
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use std::ops::Shl;
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struct Tuple(i32);
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struct Struct {
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field: i32,
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}
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enum Enum {
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Tuple(i32),
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Struct { field: i32 },
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}
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struct DropStruct {
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field: i32,
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}
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impl Drop for DropStruct {
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fn drop(&mut self) {}
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}
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struct DropTuple(i32);
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impl Drop for DropTuple {
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fn drop(&mut self) {}
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}
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enum DropEnum {
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Tuple(i32),
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Struct { field: i32 },
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}
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impl Drop for DropEnum {
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fn drop(&mut self) {}
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}
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struct FooString {
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s: String,
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}
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fn get_number() -> i32 {
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0
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}
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const fn get_usize() -> usize {
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0
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}
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fn get_struct() -> Struct {
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Struct { field: 0 }
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}
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fn get_drop_struct() -> DropStruct {
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DropStruct { field: 0 }
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}
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struct Cout;
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impl<T> Shl<T> for Cout
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where
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T: Display,
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{
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type Output = Self;
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fn shl(self, rhs: T) -> Self::Output {
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println!("{}", rhs);
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self
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}
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}
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fn main() {
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get_number();
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get_number();
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get_struct();
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get_number();
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get_number();
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5;get_number();
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get_number();
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get_number();
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5;6;get_number();
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get_number();
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get_number();
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5;get_number();
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42;get_number();
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assert!([42, 55].len() > get_usize());
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42;get_number();
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get_number();
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assert!([42; 55].len() > get_usize());
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get_number();
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String::from("blah");
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// Do not warn
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DropTuple(get_number());
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DropStruct { field: get_number() };
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DropStruct { field: get_number() };
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DropStruct { ..get_drop_struct() };
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DropEnum::Tuple(get_number());
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DropEnum::Struct { field: get_number() };
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// Issue #9954
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fn one() -> i8 {
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1
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}
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macro_rules! use_expr {
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($($e:expr),*) => {{ $($e;)* }}
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}
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use_expr!(isize::MIN / -(one() as isize), i8::MIN / -one());
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// Issue #11885
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Cout << 16;
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// Issue #11575
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// Bad formatting is required to trigger the bug
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#[rustfmt::skip]
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'label: {
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break 'label
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};
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let () = const {
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[42, 55][get_usize()];
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};
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}
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const _: () = {
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[42, 55][get_usize()];
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};
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const fn foo() {
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assert!([42, 55].len() > get_usize());
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//~^ ERROR: unnecessary operation
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}
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