<system_error>

Backports and interfaces related to Standard header <system_error>

#include <cxxomfort/system_error.hpp>

(or automatically by including <cxxomfort/backports.hpp> / <cxxomfort/cxxomfort.hpp>)

In new C++, <system_error> provides general facilities for dealing with error codes and categorization of error types and error returns (eg.: errno ) using a schema alternative and complimentary to eg.: exceptions.

Interfaces

Interfaces defined in this file:

• errc - enumerator type for error codes, basically a typesafe version of errno .
• error_category() , generic_category() , system_category() - marker functions that reference the category object that an error is being implemented in.
• error_condition - a sort of platform-agnostic error code.
• cxxomfort::cxxostd::error_code platform-dependent "error_code" .
• make_error_code()
• POSIX error codes that might be missing in some compilers (eg.: older versions of MSVC).

Non-backport interfaces (cxxomfort::fix):

• errc - Alias to errc::errc in MSVC 2010, normal std::errc otherwise.
• to_errc() - Create an errc value from a native integer, a sort of safe type cast.

errc codes

The listing of error codes that cxxomfort supports is compiler-specific and mostly depends on the operating system and C++ Standard conformance level. In general, when in >=C++11 mode the listing present at https://en.cppreference.com/w/cpp/error/errc is supporte.

In pre-C++11 mode (or in eg.: MSVC on Windows), a subset of those names are detected automatically and the extension cxxomfort::fix::errc provides access to some other names not normally provided by the compiler.

Client Code

For sections of cxxomfort making use of these facilities (even in C++03 mode), see: cxxo-sup-iterator , at_or, fixed_vector , cxxo_array_ref .

Also

• header/system_error @ cppreference
• error/errc @ cppreference (definition and values of the enumeration type)

File system_error.hpp