129c129
<     void do_write(Sink& sink, const char* s, std::streamsize n) 

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>     void do_write(Sink& sink, const Ch* s, std::streamsize n) 

137c137
<     void do_write(Sink& sink, const char* s, std::streamsize n, mpl::true_) 

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>     void do_write(Sink& sink, const Ch* s, std::streamsize n, mpl::true_) 

141c141
<     void do_write(Sink&, const char*, std::streamsize, mpl::false_) { }

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>     void do_write(Sink&, const Ch*, std::streamsize, mpl::false_) { }