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Add a test for const parameters with type parameters as types
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src/test/ui/const-generics/const-param-type-depends-on-type-param.rs
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#![feature(const_generics)] | ||
//~^ WARN the feature `const_generics` is incomplete and may cause the compiler to crash | ||
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pub struct Dependent<T, const X: T>([(); X]); //~ ERROR const parameters | ||
//~^ ERROR parameter `T` is never used | ||
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fn main() {} |
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src/test/ui/const-generics/const-param-type-depends-on-type-param.stderr
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warning: the feature `const_generics` is incomplete and may cause the compiler to crash | ||
--> $DIR/const-param-type-depends-on-type-param.rs:1:12 | ||
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LL | #![feature(const_generics)] | ||
| ^^^^^^^^^^^^^^ | ||
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error[E0671]: const parameters cannot depend on type parameters | ||
--> $DIR/const-param-type-depends-on-type-param.rs:4:34 | ||
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LL | pub struct Dependent<T, const X: T>([(); X]); | ||
| ^ const parameter depends on type parameter | ||
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error[E0392]: parameter `T` is never used | ||
--> $DIR/const-param-type-depends-on-type-param.rs:4:22 | ||
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LL | pub struct Dependent<T, const X: T>([(); X]); | ||
| ^ unused parameter | ||
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= help: consider removing `T` or using a marker such as `std::marker::PhantomData` | ||
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error: aborting due to 2 previous errors | ||
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Some errors have detailed explanations: E0392, E0671. | ||
For more information about an error, try `rustc --explain E0392`. |