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- ////
- Copyright 2003-2017 Beman Dawes
- Distributed under the Boost Software License, Version 1.0.
- See accompanying file LICENSE_1_0.txt or copy at
- http://www.boost.org/LICENSE_1_0.txt
- ////
- [#history]
- # History
- :idprefix: history_
- http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1975.html[N1975],
- Filesystem Library Proposal for TR2, accepted for Library Technical
- Report 2 (TR2) at the Berlin meeting, included additional components to
- supplement the Standard Library's Diagnostics clause. Since then, these error
- reporting components have received wider public scrutiny and enhancements have
- been made to the design. The enhanced version has been used by
- http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2054.pdf[N2054],
- Networking Library Proposal for TR2, demonstrating that these error reporting
- components are useful beyond the original Filesystem Library.
- The original proposal viewed error categories as a binary choice between
- `errno` (i.e. POSIX-style) and the native operating system's error
- codes. The proposed components now allow as many additional error categories as
- are needed by either implementations or by users. The need to support additional
- error categories, for example, occurs in some networking library implementations
- because they are built on top of the POSIX `getaddrinfo` API that
- uses error codes not based on `errno`.
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