25 lines
649 B
Rust
25 lines
649 B
Rust
#![feature(const_trait_impl, effects)]
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//@ revisions: yy yn ny nn
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//@[yy] check-pass
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#[cfg_attr(any(yy, yn), const_trait)]
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trait Foo {
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fn a(&self);
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}
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#[cfg_attr(any(yy, ny), const_trait)]
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trait Bar: ~const Foo {}
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//[ny,nn]~^ ERROR: `~const` can only be applied to `#[const_trait]`
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//[ny,nn]~| ERROR: `~const` can only be applied to `#[const_trait]`
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//[ny,nn]~| ERROR: `~const` can only be applied to `#[const_trait]`
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//[yn,nn]~^^^^ ERROR: `~const` is not allowed here
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const fn foo<T: ~const Bar>(x: &T) {
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//[yn,nn]~^ ERROR: `~const` can only be applied to `#[const_trait]`
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x.a();
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//[yn]~^ ERROR: mismatched types
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}
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fn main() {}
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