// __attribute__((__weak__)) doesn't work, because cplus_demangle_v3_callback
// is exported by an object file in libiberty.a, and the ELF spec says
// "The link editor does not extract archive members to resolve undefined weak
// __attribute__((__weak__)) doesn't work, because cplus_demangle_v3_callback
// is exported by an object file in libiberty.a, and the ELF spec says
// "The link editor does not extract archive members to resolve undefined weak