third_party/llvm-project/clang/test/SemaCXX/friend-class-nodecl.cpp

// RUN: %clang_cc1 -ast-print %s -o %t
// RUN: not grep '^ *class B' %t

// Tests that the tag decls in friend declarations aren't added to the
// declaring class's decl chain.

class A {
  friend class B;
};