diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/nll/get_default.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/nll/get_default.rs')
-rw-r--r-- | src/test/ui/nll/get_default.rs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/test/ui/nll/get_default.rs b/src/test/ui/nll/get_default.rs new file mode 100644 index 000000000..ffac8a33d --- /dev/null +++ b/src/test/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() { } |