mirror of https://github.com/rust-lang/rust
108 lines
3.8 KiB
Plaintext
108 lines
3.8 KiB
Plaintext
error[E0277]: `fn() {main}` can't be used as a const parameter type
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--> $DIR/const_param_ty_bad.rs:7:11
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LL | check(main);
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| ----- ^^^^ the trait `ConstParamTy` is not implemented for fn item `fn() {main}`
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| |
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| required by a bound introduced by this call
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note: required by a bound in `check`
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--> $DIR/const_param_ty_bad.rs:4:18
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LL | fn check(_: impl std::marker::ConstParamTy) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `check`
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help: use parentheses to call this function
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LL | check(main());
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| ++
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error[E0277]: `{closure@$DIR/const_param_ty_bad.rs:8:11: 8:13}` can't be used as a const parameter type
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--> $DIR/const_param_ty_bad.rs:8:11
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LL | check(|| {});
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| ----- ^^^^^ the trait `ConstParamTy` is not implemented for closure `{closure@$DIR/const_param_ty_bad.rs:8:11: 8:13}`
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| |
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| required by a bound introduced by this call
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note: required by a bound in `check`
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--> $DIR/const_param_ty_bad.rs:4:18
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LL | fn check(_: impl std::marker::ConstParamTy) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `check`
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help: use parentheses to call this closure
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LL | check(|| {}());
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| ++
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error[E0277]: `fn()` can't be used as a const parameter type
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--> $DIR/const_param_ty_bad.rs:9:11
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LL | check(main as fn());
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| ----- ^^^^^^^^^^^^ the trait `ConstParamTy` is not implemented for `fn()`
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| |
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| required by a bound introduced by this call
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note: required by a bound in `check`
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--> $DIR/const_param_ty_bad.rs:4:18
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LL | fn check(_: impl std::marker::ConstParamTy) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `check`
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help: use parentheses to call this function pointer
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LL | check(main as fn()());
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| ++
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error[E0277]: `&mut ()` can't be used as a const parameter type
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--> $DIR/const_param_ty_bad.rs:10:11
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LL | check(&mut ());
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| ----- ^^^^^^^ the trait `ConstParamTy` is not implemented for `&mut ()`
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| |
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| required by a bound introduced by this call
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= note: `ConstParamTy` is implemented for `&()`, but not for `&mut ()`
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note: required by a bound in `check`
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--> $DIR/const_param_ty_bad.rs:4:18
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LL | fn check(_: impl std::marker::ConstParamTy) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `check`
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help: consider removing the leading `&`-reference
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LL - check(&mut ());
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LL + check(());
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error[E0277]: `*mut ()` can't be used as a const parameter type
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--> $DIR/const_param_ty_bad.rs:11:11
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LL | check(&mut () as *mut ());
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| ----- ^^^^^^^^^^^^^^^^^^ the trait `ConstParamTy` is not implemented for `*mut ()`
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| required by a bound introduced by this call
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= help: the trait `ConstParamTy` is implemented for `()`
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note: required by a bound in `check`
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--> $DIR/const_param_ty_bad.rs:4:18
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LL | fn check(_: impl std::marker::ConstParamTy) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `check`
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error[E0277]: `*const ()` can't be used as a const parameter type
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--> $DIR/const_param_ty_bad.rs:12:11
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LL | check(&() as *const ());
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| ----- ^^^^^^^^^^^^^^^^ the trait `ConstParamTy` is not implemented for `*const ()`
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| |
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| required by a bound introduced by this call
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= help: the trait `ConstParamTy` is implemented for `()`
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note: required by a bound in `check`
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--> $DIR/const_param_ty_bad.rs:4:18
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LL | fn check(_: impl std::marker::ConstParamTy) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `check`
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error: aborting due to 6 previous errors
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For more information about this error, try `rustc --explain E0277`.
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