115 lines
4.0 KiB
Rust
115 lines
4.0 KiB
Rust
#![feature(plugin, box_syntax, inclusive_range_syntax)]
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#![plugin(clippy)]
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#![deny(no_effect, unnecessary_operation)]
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#![allow(dead_code)]
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#![allow(path_statements)]
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struct Unit;
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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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fn get_number() -> i32 { 0 }
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fn get_struct() -> Struct { Struct { field: 0 } }
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unsafe fn unsafe_fn() -> i32 { 0 }
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fn main() {
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let s = get_struct();
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let s2 = get_struct();
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0; //~ERROR statement with no effect
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s2; //~ERROR statement with no effect
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Unit; //~ERROR statement with no effect
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Tuple(0); //~ERROR statement with no effect
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Struct { field: 0 }; //~ERROR statement with no effect
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Struct { ..s }; //~ERROR statement with no effect
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Enum::Tuple(0); //~ERROR statement with no effect
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Enum::Struct { field: 0 }; //~ERROR statement with no effect
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5 + 6; //~ERROR statement with no effect
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*&42; //~ERROR statement with no effect
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&6; //~ERROR statement with no effect
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(5, 6, 7); //~ERROR statement with no effect
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box 42; //~ERROR statement with no effect
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..; //~ERROR statement with no effect
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5..; //~ERROR statement with no effect
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..5; //~ERROR statement with no effect
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5..6; //~ERROR statement with no effect
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5...6; //~ERROR statement with no effect
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[42, 55]; //~ERROR statement with no effect
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[42, 55][1]; //~ERROR statement with no effect
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(42, 55).1; //~ERROR statement with no effect
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[42; 55]; //~ERROR statement with no effect
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[42; 55][13]; //~ERROR statement with no effect
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let mut x = 0;
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|| x += 5; //~ERROR statement with no effect
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// Do not warn
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get_number();
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unsafe { unsafe_fn() };
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Tuple(get_number()); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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Struct { field: get_number() }; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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Struct { ..get_struct() }; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_struct();
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Enum::Tuple(get_number()); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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Enum::Struct { field: get_number() }; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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5 + get_number(); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION 5;get_number();
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*&get_number(); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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&get_number(); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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(5, 6, get_number()); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION 5;6;get_number();
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box get_number(); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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get_number()..; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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..get_number(); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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5..get_number(); //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION 5;get_number();
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[42, get_number()]; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION 42;get_number();
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[42, 55][get_number() as usize]; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION [42, 55];get_number() as usize;
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(42, get_number()).1; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION 42;get_number();
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[get_number(); 55]; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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[42; 55][get_number() as usize]; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION [42; 55];get_number() as usize;
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{get_number()}; //~ERROR statement can be reduced
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//~^HELP replace it with
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//~|SUGGESTION get_number();
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}
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