mirror of https://github.com/rust-lang/rust.git
43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
#![allow(dead_code)]
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#![deny(unused_results, unused_must_use)]
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//~^ NOTE: the lint level is defined here
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//~| NOTE: the lint level is defined here
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#[must_use]
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enum MustUse { Test }
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#[must_use = "some message"]
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enum MustUseMsg { Test2 }
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fn foo<T>() -> T { panic!() }
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fn bar() -> isize { return foo::<isize>(); }
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fn baz() -> MustUse { return foo::<MustUse>(); }
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fn qux() -> MustUseMsg { return foo::<MustUseMsg>(); }
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#[allow(unused_results)]
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fn test() {
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foo::<isize>();
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foo::<MustUse>(); //~ ERROR: unused `MustUse` that must be used
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foo::<MustUseMsg>(); //~ ERROR: unused `MustUseMsg` that must be used
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//~^ NOTE: some message
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}
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#[allow(unused_results, unused_must_use)]
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fn test2() {
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foo::<isize>();
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foo::<MustUse>();
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foo::<MustUseMsg>();
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}
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fn main() {
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foo::<isize>(); //~ ERROR: unused result of type `isize`
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foo::<MustUse>(); //~ ERROR: unused `MustUse` that must be used
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foo::<MustUseMsg>(); //~ ERROR: unused `MustUseMsg` that must be used
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//~^ NOTE: some message
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let _ = foo::<isize>();
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let _ = foo::<MustUse>();
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let _ = foo::<MustUseMsg>();
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}
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