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Add a test for failed inference of const types
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src/test/ui/const-generics/cannot-infer-type-for-const-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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// We should probably be able to infer the types here. However, this test is checking that we don't | ||
// get an ICE in this case. It may be modified later to not be an error. | ||
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struct Foo<const NUM_BYTES: usize>(pub [u8; NUM_BYTES]); | ||
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fn main() { | ||
let _ = Foo::<3>([1, 2, 3]); //~ ERROR type annotations needed | ||
} |
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src/test/ui/const-generics/cannot-infer-type-for-const-param.stderr
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warning: the feature `const_generics` is incomplete and may cause the compiler to crash | ||
--> $DIR/cannot-infer-type-for-const-param.rs:1:12 | ||
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LL | #![feature(const_generics)] | ||
| ^^^^^^^^^^^^^^ | ||
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error[E0282]: type annotations needed | ||
--> $DIR/cannot-infer-type-for-const-param.rs:10:19 | ||
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LL | let _ = Foo::<3>([1, 2, 3]); | ||
| ^ cannot infer type for `{integer}` | ||
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error: aborting due to previous error | ||
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For more information about this error, try `rustc --explain E0282`. |