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Peter Dimov
2021-06-13 04:39:39 +03:00
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////
Copyright 2018 Peter Dimov
Copyright 2018-2021 Peter Dimov
Distributed under the Boost Software License, Version 1.0.
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# Revision History
:idprefix:
## Changes in Boost 1.77
* The conversion operator from `error_category` to `std::error_category`
has been improved and no longer requires `<map>` or `<mutex>`.
* The comparison operators of `error_category` are now inline friends
instead of member functions (a side effect of the previous change.)
* `error_condition` now defers calling `generic_category()` to avoid
instantiating the object until it's actually needed.
* `error_condition::failed` and `error_condition::message` have been
undeprecated, and `operator bool()` now once again returns `failed()`.
* The system category now doesn't call `generic_category()`, to avoid
instantiating the object.
* The return value of `default_error_condition` changes in some cases into
an `error_condition` from the generic category, instead of from the system
category. This happens on POSIX when the input `error_code` is from
the system category and does not correspond to any `errc_t` value.
## Changes in Boost 1.76
* `windows_error.hpp` is no longer deprecated.
## Changes in Boost 1.75
* The platform-specific headers `windows_error.hpp`, `linux_error.hpp`,