45 lines
517 B
Rust
45 lines
517 B
Rust
// build-fail
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#![feature(rustc_attrs)]
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#[rustc_dump_vtable]
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trait A {
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fn foo_a(&self) {}
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}
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#[rustc_dump_vtable]
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trait B: A {
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fn foo_b(&self) {}
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}
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#[rustc_dump_vtable]
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trait C: A {
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//~^ error vtable
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fn foo_c(&self) {}
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}
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#[rustc_dump_vtable]
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trait D: B + C {
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//~^ error vtable
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fn foo_d(&self) {}
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}
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struct S;
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impl A for S {}
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impl B for S {}
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impl C for S {}
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impl D for S {}
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fn foo(d: &dyn D) {
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d.foo_d();
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}
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fn bar(d: &dyn C) {
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d.foo_c();
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}
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fn main() {
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foo(&S);
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bar(&S);
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}
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