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// This test checks that the error messages you get for this example
// at least mention `'a` and `'static`. The precise messages can drift
// over time, but this test used to exhibit some pretty bogus messages
// that were not remotely helpful.
// error-pattern:argument requires that `'a` must outlive `'static`
struct Invariant<'a>(Option<&'a mut &'a mut ()>);
fn mk_static() -> Invariant<'static> { Invariant(None) }
fn unify<'a>(x: Option<Invariant<'a>>, f: fn(Invariant<'a>)) {
let bad = if x.is_some() {
x.unwrap() //~ ERROR borrowed data escapes outside of function [E0521]
} else {
mk_static()
};
f(bad);
}
fn main() {}
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