rust/src/test/compile-fail/pred-assign.rs
2012-03-05 17:05:20 -08:00

17 lines
306 B
Rust

// -*- rust -*-
// error-pattern:unsatisfied precondition constraint (for example, lt(a, b)
fn f(a: int, b: int) : lt(a, b) { }
pure fn lt(a: int, b: int) -> bool { ret a < b; }
fn main() {
let a: int = 10;
let b: int = 23;
let c: int = 77;
check (lt(a, b));
a = 24;
f(a, b);
}