Add test for issue-52437

Author: JohnTitor

src/test/ui/closures/issue-52437.rs

@@ -0,0 +1,5 @@
+fn main() {
+    [(); &(&'static: loop { |x| {}; }) as *const _ as usize]
+    //~^ ERROR: invalid label name `'static`
+    //~| ERROR: type annotations needed
+}

src/test/ui/closures/issue-52437.stderr

@@ -0,0 +1,15 @@
+error: invalid label name `'static`
+  --> $DIR/issue-52437.rs:2:13
+   |
+LL |     [(); &(&'static: loop { |x| {}; }) as *const _ as usize]
+   |             ^^^^^^^
+
+error[E0282]: type annotations needed
+  --> $DIR/issue-52437.rs:2:30
+   |
+LL |     [(); &(&'static: loop { |x| {}; }) as *const _ as usize]
+   |                              ^ consider giving this closure parameter a type
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0282`.