mirror of https://github.com/rust-lang/rust
43 lines
873 B
Rust
43 lines
873 B
Rust
// Check that we correctly prevent users from making trait objects
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// from traits with generic methods, unless `where Self : Sized` is
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// present.
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//@ revisions: curr object_safe_for_dispatch
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#![cfg_attr(object_safe_for_dispatch, feature(object_safe_for_dispatch))]
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trait Bar {
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fn bar<T>(&self, t: T);
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}
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trait Quux {
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fn bar<T>(&self, t: T)
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where Self : Sized;
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}
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fn make_bar<T:Bar>(t: &T) -> &dyn Bar {
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//[curr]~^ ERROR E0038
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t
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//[object_safe_for_dispatch]~^ ERROR E0038
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//[curr]~^^ ERROR E0038
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}
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fn make_bar_explicit<T:Bar>(t: &T) -> &dyn Bar {
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//[curr]~^ ERROR E0038
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t as &dyn Bar
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//[object_safe_for_dispatch]~^ ERROR E0038
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//[curr]~^^ ERROR E0038
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//[curr]~| ERROR E0038
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}
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fn make_quux<T:Quux>(t: &T) -> &dyn Quux {
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t
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}
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fn make_quux_explicit<T:Quux>(t: &T) -> &dyn Quux {
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t as &dyn Quux
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}
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fn main() {
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}
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