mirror of https://github.com/rust-lang/rust
64 lines
1.3 KiB
Rust
64 lines
1.3 KiB
Rust
// Unit test for the "user substitutions" that are annotated on each
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// node.
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trait Bazoom<T>: Sized {
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fn method<U>(self, arg: T, arg2: U) { }
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}
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impl<T, U> Bazoom<U> for T {
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}
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fn annot_underscore() {
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let a = 22;
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let b = 44;
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let c = 66;
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<_ as Bazoom<_>>::method(a, &b, c); // OK
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}
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fn annot_reference_any_lifetime() {
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let a = 22;
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let b = 44;
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let c = 66;
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<_ as Bazoom<&u32>>::method(a, &b, c); // OK
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}
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fn annot_reference_static_lifetime() {
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let a = 22;
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let b = 44;
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let c = 66;
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let x = <&'static u32 as Bazoom<_>>::method;
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x(&a, b, c); //~ ERROR
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}
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fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
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let a = 22;
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let b = 44;
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let c = 66;
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<_ as Bazoom<&'a u32>>::method(a, &b, c); //~ ERROR
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}
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fn annot_reference_named_lifetime_ok<'a>(b: &'a u32) {
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let a = 44;
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let c = 66;
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<_ as Bazoom<&'a u32>>::method(a, &b, c);
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}
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fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
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let a = 22;
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let b = 44;
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let _closure = || {
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let c = 66;
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<_ as Bazoom<&'a u32>>::method(a, &b, c); //~ ERROR
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};
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}
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fn annot_reference_named_lifetime_in_closure_ok<'a>(b: &'a u32) {
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let a = 44;
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let c = 66;
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let _closure = || {
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<_ as Bazoom<&'a u32>>::method(a, &b, c);
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};
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}
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fn main() { }
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