// Modified regression test for Issue #30438 that exposed an // independent issue (see discussion on ticket). use std::ops::Index; struct Test<'a> { s: &'a String } impl <'a> Index for Test<'a> { type Output = Test<'a>; fn index(&self, _: usize) -> &Self::Output { &Test { s: &self.s} //~^ ERROR: cannot return reference to temporary value } } fn main() { let s = "Hello World".to_string(); let test = Test{s: &s}; let r = &test[0]; println!("{}", test.s); // OK since test is valid println!("{}", r.s); // Segfault since value pointed by r has already been dropped }