add test for 141764

Author: jdonszelmann

tests/ui/macros/auxiliary/borrowck-error-in-macro.rs

@@ -0,0 +1,10 @@
+#[macro_export]
+macro_rules! ice {
+    () => {
+        fn main() {
+            let d = &mut 0;
+            let c = || *d += 1;
+            c();
+        }
+    };
+}

tests/ui/macros/borrowck-error-in-macro.rs

@@ -0,0 +1,5 @@
+//@ aux-build: borrowck-error-in-macro.rs
+
+extern crate borrowck_error_in_macro as a;
+
+a::ice! {}