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The latest version of this topic can be found at <system_error>.
Include the header <system_error> to define the exception class system_error and related templates for processing low-level system errors.
Syntax
#include <system_error>
Objects
| generic_category | Represents the category for generic errors. |
| system_category | Represents the category for errors caused by low-level system overflows. |
Typedefs
| generic_errno | A type that represents the enumeration that provides the symbolic names for all the error-code macros defined by Posix in <errno.h>. |
Functions
| make_error_code | Creates an error_code object. |
| make_error_condition | Creates an error_condition object. |
Operators
| operator== | Tests if the object on the left side of the operator is equal to the object on the right side. |
| operator!= | Tests if the object on the left side of the operator is not equal to the object on the right side. |
| operator< | Tests if an object is less than the object passed in for comparison. |
Enumerations
| errc | Provides symbolic names for all the error-code macros defined by Posix in <errno.h>. |
Classes and Structs
| error_category | Represents the abstract, common base for objects that describes a category of error codes. |
| error_code | Represents low-level system errors that are implementation-specific. |
| error_condition | Represents user-defined error codes. |
| is_error_code_enum | Represents a type predicate that tests for the error_code Class enumeration. |
| is_error_condition_enum | Represents a type predicate that tests for the error_condition Class enumeration. |
| system_error | Represents the base class for all exceptions thrown to report a low-level system overflow. |
Requirements
Header: <system_error>
Namespace: std