mirror of https://github.com/rust-lang/rust
111 lines
2.6 KiB
Rust
111 lines
2.6 KiB
Rust
#![no_std]
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#![allow(unused_variables)]
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#![allow(non_camel_case_types)]
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#![allow(non_upper_case_globals)]
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#![deny(dead_code)]
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#![crate_type="lib"]
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pub use foo2::Bar2;
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mod foo {
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pub struct Bar; //~ ERROR: struct `Bar` is never constructed
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}
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mod foo2 {
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pub struct Bar2;
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}
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pub static pub_static: isize = 0;
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static priv_static: isize = 0; //~ ERROR: static `priv_static` is never used
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const used_static: isize = 0;
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pub static used_static2: isize = used_static;
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const USED_STATIC: isize = 0;
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const STATIC_USED_IN_ENUM_DISCRIMINANT: isize = 10;
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pub const pub_const: isize = 0;
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const priv_const: isize = 0; //~ ERROR: constant `priv_const` is never used
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const used_const: isize = 0;
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pub const used_const2: isize = used_const;
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const USED_CONST: isize = 1;
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const CONST_USED_IN_ENUM_DISCRIMINANT: isize = 11;
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pub type typ = *const UsedStruct4;
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pub struct PubStruct;
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struct PrivStruct; //~ ERROR: struct `PrivStruct` is never constructed
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struct UsedStruct1 {
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#[allow(dead_code)]
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x: isize
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}
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struct UsedStruct2(#[allow(dead_code)] isize);
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struct UsedStruct3;
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pub struct UsedStruct4;
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// this struct is never used directly, but its method is, so we don't want
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// to warn it
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struct SemiUsedStruct;
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impl SemiUsedStruct {
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fn la_la_la() {}
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}
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struct StructUsedAsField;
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pub struct StructUsedInEnum;
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struct StructUsedInGeneric;
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pub struct PubStruct2 {
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#[allow(dead_code)]
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struct_used_as_field: *const StructUsedAsField
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}
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pub enum pub_enum { foo1, bar1 }
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pub enum pub_enum2 { a(*const StructUsedInEnum) }
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pub enum pub_enum3 {
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Foo = STATIC_USED_IN_ENUM_DISCRIMINANT,
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Bar = CONST_USED_IN_ENUM_DISCRIMINANT,
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}
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enum priv_enum { foo2, bar2 } //~ ERROR: enum `priv_enum` is never used
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enum used_enum {
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foo3,
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bar3 //~ ERROR variant `bar3` is never constructed
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}
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fn f<T>() {}
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pub fn pub_fn() {
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used_fn();
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let used_struct1 = UsedStruct1 { x: 1 };
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let used_struct2 = UsedStruct2(1);
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let used_struct3 = UsedStruct3;
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let e = used_enum::foo3;
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SemiUsedStruct::la_la_la();
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let i = 1;
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match i {
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USED_STATIC => (),
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USED_CONST => (),
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_ => ()
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}
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f::<StructUsedInGeneric>();
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}
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fn priv_fn() { //~ ERROR: function `priv_fn` is never used
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let unused_struct = PrivStruct;
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}
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fn used_fn() {}
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fn foo() { //~ ERROR: function `foo` is never used
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bar();
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let unused_enum = priv_enum::foo2;
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}
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fn bar() { //~ ERROR: function `bar` is never used
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foo();
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}
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fn baz() -> impl Copy { //~ ERROR: function `baz` is never used
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"I'm unused, too"
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}
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// Code with #[allow(dead_code)] should be marked live (and thus anything it
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// calls is marked live)
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#[allow(dead_code)]
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fn g() { h(); }
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fn h() {}
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