Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide-diagnostics/src/handlers/mutability_errors.rs')
| -rw-r--r-- | crates/ide-diagnostics/src/handlers/mutability_errors.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/crates/ide-diagnostics/src/handlers/mutability_errors.rs b/crates/ide-diagnostics/src/handlers/mutability_errors.rs index 8795afc2d9..f61460e317 100644 --- a/crates/ide-diagnostics/src/handlers/mutability_errors.rs +++ b/crates/ide-diagnostics/src/handlers/mutability_errors.rs @@ -994,6 +994,27 @@ fn f() { } #[test] + fn slice_pattern() { + check_diagnostics( + r#" +//- minicore: coerce_unsized, deref_mut, slice, copy +fn x(t: &[u8]) { + match t { + &[a, mut b] | &[a, _, mut b] => { + //^^^^^ 💡 weak: variable does not need to be mutable + + a = 2; + //^^^^^ 💡 error: cannot mutate immutable variable `a` + + } + _ => {} + } +} + "#, + ); + } + + #[test] fn boxes() { check_diagnostics( r#" |