68 lines
1.2 KiB
Rust
68 lines
1.2 KiB
Rust
trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
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fn a(&self) -> i32 {
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10
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}
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fn z(&self) -> i32 {
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11
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}
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fn y(&self) -> i32 {
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12
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}
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}
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trait Bar: Foo {
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fn b(&self) -> i32 {
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20
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}
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fn w(&self) -> i32 {
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21
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}
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}
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trait Baz: Bar {
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fn c(&self) -> i32 {
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30
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}
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}
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impl Foo for i32 {
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fn a(&self) -> i32 {
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100
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}
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}
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impl Bar for i32 {
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fn b(&self) -> i32 {
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200
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}
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}
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impl Baz for i32 {
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fn c(&self) -> i32 {
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300
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}
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}
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fn main() {
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let baz: &dyn Baz = &1;
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let bar: &dyn Bar = baz;
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bar.c();
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//~^ ERROR no method named `c` found for reference `&dyn Bar` in the current scope [E0599]
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let foo: &dyn Foo = baz;
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foo.b();
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//~^ ERROR no method named `b` found for reference `&dyn Foo` in the current scope [E0599]
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foo.c();
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//~^ ERROR no method named `c` found for reference `&dyn Foo` in the current scope [E0599]
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let foo: &dyn Foo = bar;
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foo.b();
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//~^ ERROR no method named `b` found for reference `&dyn Foo` in the current scope [E0599]
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foo.c();
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//~^ ERROR no method named `c` found for reference `&dyn Foo` in the current scope [E0599]
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}
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