[creduce-bugs] another crash

[John Regehr <regehr@cs.utah.edu>]

"/home/regehr/creduce-install/libexec/clang_delta" 
--transformation=move-global-var --counter=1 small.cpp
Segmentation fault

namespace std {
template <typename> class basic_istream;
}
namespace boost {
template <class> class rv {
} __attribute__((__may_alias__));
template <class T> rv<T> &move(T);
namespace log {
namespace v2_mt_posix {
template <typename> class basic_settings {
public:
  basic_settings();
  basic_settings(rv<basic_settings> &) {}
};
template <typename CharT>
basic_settings<CharT> parse_settings(std::basic_istream<CharT> &) {
  basic_settings<CharT> b;
  return move(b);
}
template basic_settings<char> parse_settings(std::basic_istream<char> &);
}
}
}