mirror of https://github.com/rust-lang/rust
42 lines
629 B
Rust
42 lines
629 B
Rust
//@ run-pass
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// Test calling methods on an impl for a bare trait.
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//@ aux-build:traitimpl.rs
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extern crate traitimpl;
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use traitimpl::Bar;
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static mut COUNT: usize = 1;
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trait T {
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fn t(&self) {} //~ WARN method `t` is never used
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}
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impl<'a> dyn T+'a {
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fn foo(&self) {
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unsafe { COUNT *= 2; }
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}
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fn bar() {
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unsafe { COUNT *= 3; }
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}
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}
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impl T for isize {}
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struct Foo;
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impl<'a> Bar<'a> for Foo {}
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fn main() {
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let x: &dyn T = &42;
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x.foo();
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<dyn T>::foo(x);
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<dyn T>::bar();
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unsafe { assert_eq!(COUNT, 12); }
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// Cross-crait case
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let x: &dyn Bar = &Foo;
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x.bar();
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}
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