[libc++abi] Get rid of warnings when running the tests with GCC
diff --git a/libcxxabi/test/catch_pointer_reference.pass.cpp b/libcxxabi/test/catch_pointer_reference.pass.cpp
index 5ebcc12..e50135e 100644
--- a/libcxxabi/test/catch_pointer_reference.pass.cpp
+++ b/libcxxabi/test/catch_pointer_reference.pass.cpp
@@ -14,11 +14,11 @@
// (ignoring the top-level cv-qualifiers), or
// * the handler is of type cv T or cv T& and T is an unambiguous base
// class of E, or
-// / * the handler is of type cv1 T* cv2 and E is a pointer type that can \
-// | be converted to the type of the handler by either or both of |
-// | o a standard pointer conversion (4.10 [conv.ptr]) not involving |
-// | conversions to private or protected or ambiguous classes |
-// \ o a qualification conversion /
+// > * the handler is of type cv1 T* cv2 and E is a pointer type that can <
+// > be converted to the type of the handler by either or both of <
+// > o a standard pointer conversion (4.10 [conv.ptr]) not involving <
+// > conversions to private or protected or ambiguous classes <
+// > o a qualification conversion <
// * the handler is a pointer or pointer to member type and E is
// std::nullptr_t
//
