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