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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 18:31:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 18:31:44 +0000 |
commit | c23a457e72abe608715ac76f076f47dc42af07a5 (patch) | |
tree | 2772049aaf84b5c9d0ed12ec8d86812f7a7904b6 /tests/ui/rfcs/rfc-2294-if-let-guard/guard-mutability-2.rs | |
parent | Releasing progress-linux version 1.73.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-c23a457e72abe608715ac76f076f47dc42af07a5.tar.xz rustc-c23a457e72abe608715ac76f076f47dc42af07a5.zip |
Merging upstream version 1.74.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | tests/ui/rfcs/rfc-2294-if-let-guard/guard-mutability-2.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/ui/rfcs/rfc-2294-if-let-guard/guard-mutability-2.rs b/tests/ui/rfcs/rfc-2294-if-let-guard/guard-mutability-2.rs new file mode 100644 index 000000000..4efa02f57 --- /dev/null +++ b/tests/ui/rfcs/rfc-2294-if-let-guard/guard-mutability-2.rs @@ -0,0 +1,14 @@ +// Check mutable reference bindings cannot be mutated by an if-let guard. + +#![feature(if_let_guard)] + +fn main() { + let mut x: Option<Option<i32>> = Some(Some(6)); + match x { + Some(ref mut y) if let Some(ref mut z) = *y => { + //~^ ERROR cannot borrow `y.0` as mutable, as it is immutable for the pattern guard + let _: &mut i32 = z; + } + _ => {} + } +} |