rust/tests/ui/binding/expr-match-generic.rs

30 lines
685 B
Rust

//@ run-pass
#![allow(non_camel_case_types)]
type compare<T> = extern "Rust" fn(T, T) -> bool;
fn test_generic<T:Clone>(expected: T, eq: compare<T>) {
let actual: T = match true { true => { expected.clone() }, _ => panic!("wat") };
assert!((eq(expected, actual)));
}
fn test_bool() {
fn compare_bool(b1: bool, b2: bool) -> bool { return b1 == b2; }
test_generic::<bool>(true, compare_bool);
}
#[derive(Clone)]
struct Pair {
a: isize,
b: isize,
}
fn test_rec() {
fn compare_rec(t1: Pair, t2: Pair) -> bool {
t1.a == t2.a && t1.b == t2.b
}
test_generic::<Pair>(Pair {a: 1, b: 2}, compare_rec);
}
pub fn main() { test_bool(); test_rec(); }