Auto merge of #82153 - jonas-schievink:rollup-ls5r943, r=jonas-schievink

Rollup of 19 pull requests

Successful merges:

 - #81503 (Suggest to create a new `const` item if the `fn` in the array is a `const fn`)
 - #81897 (Add match pattern diagnostics regression test)
 - #81975 (Seal the CommandExt, OsStrExt and OsStringExt traits)
 - #82009 (const_generics: Dont evaluate array length const when handling errors)
 - #82060 (Fix typos in BTreeSet::{first, last} docs)
 - #82061 (CTFE validation: catch ReadPointerAsBytes and better error)
 - #82063 (Fixed minor typo in catch_unwind docs)
 - #82067 (const_generics: Fix incorrect ty::ParamEnv::empty() usage)
 - #82077 (Edit `rustc_arena::DropArena` docs)
 - #82096 (Fix a typo)
 - #82106 (Remove unnecessary `Option` in `default_doc`)
 - #82107 (expand: Some cleanup)
 - #82118 (Add missing env!-decl variant)
 - #82119 (Fix typo in link to CreateSymbolicLinkW documentation.)
 - #82120 (Stabilize Arguments::as_str)
 - #82129 (Remove redundant bool_to_option feature gate)
 - #82133 (Update link for extern prelude.)
 - #82141 (32-bit ARM: Emit `lr` instead of `r14` when specified as an `asm!` output register.)
 - #82147 (:arrow_up: rust-analyzer)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

2 files changed, 29 insertions, 0 deletions

diff --git a/src/test/ui/pattern/usefulness/issue-72377.rs b/src/test/ui/pattern/usefulness/issue-72377.rs
new file mode 100644
index 00000000000..b0d8a53ed93
--- /dev/null
+++ b/src/test/ui/pattern/usefulness/issue-72377.rs
@@ -0,0 +1,17 @@
+#[derive(PartialEq, Eq)]
+enum X { A, B, C, }
+
+fn main() {
+    let x = X::A;
+    let y = Some(X::A);
+
+    match (x, y) {
+        //~^ ERROR non-exhaustive patterns: `(A, Some(A))`, `(A, Some(B))`, `(B, Some(B))` and 2
+        //~| more not covered
+        (_, None) => false,
+        (v, Some(w)) if v == w => true,
+        (X::B, Some(X::C)) => false,
+        (X::B, Some(X::A)) => false,
+        (X::A, Some(X::C)) | (X::C, Some(X::A)) => false,
+    };
+}
diff --git a/src/test/ui/pattern/usefulness/issue-72377.stderr b/src/test/ui/pattern/usefulness/issue-72377.stderr
new file mode 100644
index 00000000000..b4a68333967
--- /dev/null
+++ b/src/test/ui/pattern/usefulness/issue-72377.stderr
@@ -0,0 +1,12 @@
+error[E0004]: non-exhaustive patterns: `(A, Some(A))`, `(A, Some(B))`, `(B, Some(B))` and 2 more not covered
+  --> $DIR/issue-72377.rs:8:11
+   |
+LL |     match (x, y) {
+   |           ^^^^^^ patterns `(A, Some(A))`, `(A, Some(B))`, `(B, Some(B))` and 2 more not covered
+   |
+   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   = note: the matched value is of type `(X, Option<X>)`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.