rust/tests/ui/nll/issue-46589.rs
2024-02-16 20:02:50 +00:00

32 lines
770 B
Rust

// This tests passes in Polonius mode, so is skipped in the automated compare-mode.
// We will manually check it passes in Polonius tests, as we can't have a test here
// which conditionally passes depending on a test revision/compile-flags.
//@ ignore-compare-mode-polonius
struct Foo;
impl Foo {
fn get_self(&mut self) -> Option<&mut Self> {
Some(self)
}
fn new_self(&mut self) -> &mut Self {
self
}
fn trigger_bug(&mut self) {
let other = &mut (&mut *self);
*other = match (*other).get_self() {
Some(s) => s,
None => (*other).new_self()
//~^ ERROR cannot borrow `**other` as mutable more than once at a time [E0499]
};
let c = other;
}
}
fn main() {}