Add tests from #10134

Author: smoelius

tests/ui/crashes/possible_borrower.rs

@@ -0,0 +1,24 @@
+// https://github.com/rust-lang/rust-clippy/issues/10134
+
+fn meow(_s: impl AsRef<str>) {}
+
+macro_rules! quad {
+    ($x:stmt) => {
+        $x
+        $x
+        $x
+        $x
+    };
+}
+
+fn main() {
+    let i = 0;
+    quad!(quad!(quad!(quad!(quad!(meow(format!("abc{i}")))))));
+}
+
+// https://github.com/rust-lang/rust-clippy/issues/10134#issuecomment-1374480660
+fn second_testcase() {
+    quad!(quad!(quad!(for i in 0..4 {
+        quad!(quad!(meow(format!("abc{i}"))));
+    })));
+}