Add tests (currently broken) for unsafe + inline const pat

src/test/ui/inline-const/pat-unsafe-err.rs

@@ -0,0 +1,17 @@
+// ignore-test This is currently broken
+// revisions: mir thir
+// [thir]compile-flags: -Z thir-unsafeck
+
+#![allow(incomplete_features)]
+#![feature(inline_const_pat)]
+
+const unsafe fn require_unsafe() -> usize { 1 }
+
+fn main() {
+    match () {
+        const {
+            require_unsafe();
+            //~^ ERROR [E0133]
+        } => (),
+    }
+}

src/test/ui/inline-const/pat-unsafe.rs

@@ -0,0 +1,22 @@
+// ignore-test This is currently broken
+// check-pass
+// revisions: mir thir
+// [thir]compile-flags: -Z thir-unsafeck
+
+#![allow(incomplete_features)]
+#![warn(unused_unsafe)]
+#![feature(inline_const_pat)]
+
+const unsafe fn require_unsafe() -> usize { 1 }
+
+fn main() {
+    unsafe {
+        match () {
+            const {
+                require_unsafe();
+                unsafe {}
+                //~^ WARNING unnecessary `unsafe` block
+            } => (),
+        }
+    }
+}