mirror of https://github.com/rust-lang/rust
23 lines
422 B
Rust
23 lines
422 B
Rust
// Check that we correctly prevent users from making trait objects
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// form traits that make use of `Self` in an argument or return position.
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trait Bar<T> {
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fn bar(&self, x: &T);
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}
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trait Baz : Bar<Self> {
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//~^ ERROR the size for values of type `Self` cannot be known
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}
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fn make_bar<T:Bar<u32>>(t: &T) -> &dyn Bar<u32> {
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t
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}
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fn make_baz<T:Baz>(t: &T) -> &dyn Baz {
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//~^ ERROR E0038
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t
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}
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fn main() {
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}
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