From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/nll/get_default.rs | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 tests/ui/nll/get_default.rs (limited to 'tests/ui/nll/get_default.rs') diff --git a/tests/ui/nll/get_default.rs b/tests/ui/nll/get_default.rs new file mode 100644 index 000000000..ffac8a33d --- /dev/null +++ b/tests/ui/nll/get_default.rs @@ -0,0 +1,44 @@ +// Basic test for free regions in the NLL code. This test ought to +// report an error due to a reborrowing constraint. Right now, we get +// a variety of errors from the older, AST-based machinery (notably +// borrowck), and then we get the NLL error at the end. + +struct Map { +} + +impl Map { + fn get(&self) -> Option<&String> { None } + fn set(&mut self, v: String) { } +} + +fn ok(map: &mut Map) -> &String { + loop { + match map.get() { + Some(v) => { + return v; + } + None => { + map.set(String::new()); // Ideally, this would not error. + //~^ ERROR borrowed as immutable + } + } + } +} + +fn err(map: &mut Map) -> &String { + loop { + match map.get() { + Some(v) => { + map.set(String::new()); // Both AST and MIR error here + //~^ ERROR borrowed as immutable + return v; + } + None => { + map.set(String::new()); // Ideally, just AST would error here + //~^ ERROR borrowed as immutable + } + } + } +} + +fn main() { } -- cgit v1.2.3