Reject closures in patterns

src/test/ui/consts/closure-structural-match-issue-90013.rs

@@ -0,0 +1,8 @@
+// Regression test for issue 90013.
+// check-pass
+#![allow(incomplete_features)]
+#![feature(inline_const)]
+
+fn main() {
+    const { || {} };
+}

src/test/ui/pattern/non-structural-match-types.rs

@@ -0,0 +1,14 @@
+// edition:2021
+#![allow(incomplete_features)]
+#![allow(unreachable_code)]
+#![feature(const_async_blocks)]
+#![feature(inline_const)]
+
+fn main() {
+    match loop {} {
+        const { || {} } => {}, //~ ERROR cannot be used in patterns
+    }
+    match loop {} {
+        const { async {} } => {}, //~ ERROR cannot be used in patterns
+    }
+}

src/test/ui/pattern/non-structural-match-types.stderr

@@ -0,0 +1,14 @@
+error: `[closure@$DIR/non-structural-match-types.rs:9:17: 9:22]` cannot be used in patterns
+  --> $DIR/non-structural-match-types.rs:9:9
+   |
+LL |         const { || {} } => {},
+   |         ^^^^^^^^^^^^^^^
+
+error: `impl Future` cannot be used in patterns
+  --> $DIR/non-structural-match-types.rs:12:9
+   |
+LL |         const { async {} } => {},
+   |         ^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 2 previous errors
+