rust/src/test/compile-fail/loop-pred-constraints.rs
Tim Chevalier 3f3c9caf4d Handle poststates of breaking loops correctly in typestate
The poststate should be one where all predicates are assumed false,
rather than the unchanged prestate.

Closes #2374
2012-05-29 18:22:38 -07:00

17 lines
341 B
Rust

// https://github.com/mozilla/rust/issues/2374
// error-pattern:unsatisfied precondition constraint (for example, even(y
fn print_even(y: int) : even(y) { log(debug, y); }
pure fn even(y: int) -> bool { true }
fn main() {
let mut y = 42;
check (even(y));
loop {
print_even(y);
loop { y += 1; break; }
}
}