rust/tests/ui/regions/regions-bounded-by-trait-requiring-static.rs
2023-01-11 09:32:08 +00:00

70 lines
1.6 KiB
Rust

// Test which of the builtin types are considered sendable. The tests
// in this file all test region bound and lifetime violations that are
// detected during type check.
trait Dummy : 'static { }
fn assert_send<T:'static>() { }
// lifetime pointers with 'static lifetime are ok
fn static_lifime_ok<'a,T,U:Send>(_: &'a isize) {
assert_send::<&'static isize>();
assert_send::<&'static str>();
assert_send::<&'static [isize]>();
// whether or not they are mutable
assert_send::<&'static mut isize>();
}
// otherwise lifetime pointers are not ok
fn param_not_ok<'a>(x: &'a isize) {
assert_send::<&'a isize>();
//~^ ERROR lifetime may not live long enough
}
fn param_not_ok1<'a>(_: &'a isize) {
assert_send::<&'a str>();
//~^ ERROR lifetime may not live long enough
}
fn param_not_ok2<'a>(_: &'a isize) {
assert_send::<&'a [isize]>();
//~^ ERROR lifetime may not live long enough
}
// boxes are ok
fn box_ok() {
assert_send::<Box<isize>>();
assert_send::<String>();
assert_send::<Vec<isize>>();
}
// but not if they own a bad thing
fn box_with_region_not_ok<'a>() {
assert_send::<Box<&'a isize>>();
//~^ ERROR lifetime may not live long enough
}
// raw pointers are ok unless they point at unsendable things
fn unsafe_ok1<'a>(_: &'a isize) {
assert_send::<*const isize>();
assert_send::<*mut isize>();
}
fn unsafe_ok2<'a>(_: &'a isize) {
assert_send::<*const &'a isize>();
//~^ ERROR lifetime may not live long enough
}
fn unsafe_ok3<'a>(_: &'a isize) {
assert_send::<*mut &'a isize>();
//~^ ERROR lifetime may not live long enough
}
fn main() {
}