Method c_str

Bcore/src/main/cpp/Dobby/tests/catch.hpp:9591–9595

}

auto StringRef::c_str() const -> char const * {
  if (isSubstring())
    const_cast<StringRef *>(this)->takeOwnership();
  return m_start;
}
auto StringRef::currentData() const noexcept -> char const * {
  return m_start;
}