< cpp‎ | error
Error handling
Exception handling
Exception handling failures
(until C++17)
(until C++17)
(C++11)(until C++17)
(until C++17)
Exception categories
Error codes
Error codes
system_error facility
Defined in header <stdexcept>
class range_error;

Defines a type of object to be thrown as exception. It can be used to report range errors (that is, situations where a result of a computation cannot be represented by the destination type)

The only standard library components that throw this exception are std::wstring_convert::from_bytes and std::wstring_convert::to_bytes.

The mathematical functions in the standard library components do not throw this exception (mathematical functions report range errors as specified in math_errhandling).

cpp/error/exceptioncpp/error/runtime errorstd-range error-inheritance.svg

Inheritance diagram

Member functions

constructs the exception object
(public member function)


explicit range_error( const std::string& what_arg );
explicit range_error( const char* what_arg );
(2) (since C++11)

Constructs the exception object with what_arg as explanatory string that can be accessed through what().

Because copying std::range_error is not permitted to throw exceptions, this message is typically stored internally as a separately-allocated reference-counted string. This is also why there is no constructor taking std::string&&: it would have to copy the content anyway.


what_arg - explanatory string


May throw std::bad_alloc

Inherited from std::exception

Member functions

destroys the exception object
(virtual public member function of std::exception)
returns an explanatory string
(virtual public member function of std::exception)