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| error_code  | make_error_code (coroutines::coroutine_errc e) | 
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| error_condition  | make_error_condition (coroutines::coroutine_errc e) | 
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BOOST_SYSTEM_DECL const  
error_category &  | system_category () BOOST_NOEXCEPT | 
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BOOST_SYSTEM_DECL const  
error_category &  | generic_category () BOOST_NOEXCEPT | 
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| const error_category &  | get_system_category () | 
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| const error_category &  | get_generic_category () | 
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| const error_category &  | get_posix_category () | 
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| bool  | operator!= (const error_code &lhs, const error_code &rhs) BOOST_NOEXCEPT | 
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| bool  | operator!= (const error_condition &lhs, const error_condition &rhs) BOOST_NOEXCEPT | 
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| bool  | operator== (const error_code &code, const error_condition &condition) BOOST_NOEXCEPT | 
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| bool  | operator!= (const error_code &lhs, const error_condition &rhs) BOOST_NOEXCEPT | 
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| bool  | operator== (const error_condition &condition, const error_code &code) BOOST_NOEXCEPT | 
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| bool  | operator!= (const error_condition &lhs, const error_code &rhs) BOOST_NOEXCEPT | 
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| template<class charT , class traits >  | 
std::basic_ostream< charT,  
traits > &  | operator<< (std::basic_ostream< charT, traits > &os, error_code ec) | 
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| std::size_t  | hash_value (const error_code &ec) | 
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| error_code  | make_error_code (future_errc e) BOOST_NOEXCEPT | 
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| error_condition  | make_error_condition (future_errc e) BOOST_NOEXCEPT | 
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