mirror of https://github.com/rust-lang/rust.git
48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
// Basic test for free regions in the NLL code. This test ought to
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// report an error due to a reborrowing constraint.
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//@ ignore-compare-mode-polonius (explicit revisions)
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//@ revisions: nll polonius legacy
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//@ [polonius] compile-flags: -Z polonius=next
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//@ [legacy] compile-flags: -Z polonius=legacy
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struct Map {
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}
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impl Map {
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fn get(&self) -> Option<&String> { None }
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fn set(&mut self, v: String) { }
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}
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fn ok(map: &mut Map) -> &String {
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loop {
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match map.get() {
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Some(v) => {
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return v;
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}
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None => {
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map.set(String::new()); // Ideally, this would not error.
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//[nll]~^ ERROR borrowed as immutable
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}
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}
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}
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}
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fn err(map: &mut Map) -> &String {
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loop {
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match map.get() {
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Some(v) => {
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map.set(String::new()); // We always expect an error here.
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//~^ ERROR borrowed as immutable
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return v;
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}
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None => {
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map.set(String::new()); // Ideally, this would not error.
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//[nll]~^ ERROR borrowed as immutable
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}
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}
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}
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}
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fn main() { }
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