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/borrowck/issue-51348-multi-ref-mut-in-guard.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/borrowck/issue-51348-multi-ref-mut-in-guard.rs')
-rw-r--r-- | src/test/ui/borrowck/issue-51348-multi-ref-mut-in-guard.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/issue-51348-multi-ref-mut-in-guard.rs b/src/test/ui/borrowck/issue-51348-multi-ref-mut-in-guard.rs new file mode 100644 index 000000000..7d5acb957 --- /dev/null +++ b/src/test/ui/borrowck/issue-51348-multi-ref-mut-in-guard.rs @@ -0,0 +1,21 @@ +// We used to ICE if you had a single match arm with multiple +// candidate patterns with `ref mut` identifiers used in the arm's +// guard. +// +// Also, this test expands on the original bug's example by actually +// trying to double check that we are matching against the right part +// of the input data based on which candidate pattern actually fired. + +// run-pass + +fn foo(x: &mut Result<(u32, u32), (u32, u32)>) -> u32 { + match *x { + Ok((ref mut v, _)) | Err((_, ref mut v)) if *v > 0 => { *v } + _ => { 0 } + } +} + +fn main() { + assert_eq!(foo(&mut Ok((3, 4))), 3); + assert_eq!(foo(&mut Err((3, 4))), 4); +} |