// Copyright 2012 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // Test a method call where the parameter `B` would (illegally) be // inferred to a region bound in the method argument. If this program // were accepted, then the closure passed to `s.f` could escape its // argument. struct S; impl S { fn f(&self, _: F) where F: FnOnce(&i32) -> B { } } fn main() { let s = S; s.f(|p| p) //~ ERROR cannot infer }