bd928a0b5e
Such implementations are usually mistakes and are not used in the compiler or standard library (after this commit) so forbid them with `min_specialization`.
58 lines
834 B
Rust
58 lines
834 B
Rust
// Tests that `T: ~const Foo` in a specializing impl is treated as equivalent to
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// `T: Foo` in the default impl for the purposes of specialization (i.e., it
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// does not think that the user is attempting to specialize on trait `Foo`).
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// check-pass
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#![feature(rustc_attrs)]
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#![feature(min_specialization)]
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#![feature(const_trait_impl)]
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#[rustc_specialization_trait]
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trait Specialize {}
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#[const_trait]
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trait Foo {}
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#[const_trait]
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trait Bar {
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fn bar();
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}
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impl<T> Bar for T
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where
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T: Foo,
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{
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default fn bar() {}
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}
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impl<T> const Bar for T
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where
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T: ~const Foo,
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T: Specialize,
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{
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fn bar() {}
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}
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#[const_trait]
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trait Baz {
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fn baz();
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}
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impl<T> const Baz for T
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where
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T: Foo,
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{
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default fn baz() {}
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}
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impl<T> const Baz for T
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where
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T: ~const Foo,
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T: Specialize,
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{
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fn baz() {}
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}
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fn main() {}
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