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//@ aux-build:lifetime_bound_will_change_warning_lib.rs
// Test that various corner cases cause an error. These are tests
// that used to pass before we tweaked object defaults.
#![allow(dead_code)]
#![allow(unused_variables)]
extern crate lifetime_bound_will_change_warning_lib as lib;
fn just_ref(x: &dyn Fn()) {
}
fn ref_obj(x: &Box<dyn Fn()>) {
// this will change to &Box<Fn()+'static>...
// Note: no warning is issued here, because the type of `x` will change to 'static
if false { ref_obj(x); }
}
fn test1<'a>(x: &'a Box<dyn Fn() + 'a>) {
// just_ref will stay the same.
just_ref(&**x)
}
fn test1cc<'a>(x: &'a Box<dyn Fn() + 'a>) {
// same as test1, but cross-crate
lib::just_ref(&**x)
}
fn test2<'a>(x: &'a Box<dyn Fn() + 'a>) {
// but ref_obj will not, so warn.
ref_obj(x)
//~^ ERROR borrowed data escapes
}
fn test2cc<'a>(x: &'a Box<dyn Fn() + 'a>) {
// same as test2, but cross crate
lib::ref_obj(x)
//~^ ERROR borrowed data escapes
}
fn test3<'a>(x: &'a Box<dyn Fn() + 'static>) {
// here, we have a 'static bound, so even when ref_obj changes, no error results
ref_obj(x)
}
fn test3cc<'a>(x: &'a Box<dyn Fn() + 'static>) {
// same as test3, but cross crate
lib::ref_obj(x)
}
fn main() {
}
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