std::invalid_argument (3) - Linux Manuals

std::invalid_argument: std::invalid_argument


std::invalid_argument - std::invalid_argument


Defined in header <stdexcept>
class invalid_argument;

Defines a type of object to be thrown as exception. It reports errors that arise because an argument value has not been accepted.
This exception is thrown by std::bitset::bitset, and the std::stoi and std::stof families of functions.
 std-invalid argument-inheritance.svg
Inheritance diagram

Member functions

              constructs the exception object
constructor (public member function)


explicit invalid_argument( const std::string& what_arg ); (1)
explicit invalid_argument( 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::invalid_argument 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

destructor destroys the exception object
             (virtual public member function of std::exception)

what returns an explanatory string
             (virtual public member function of std::exception)


The purpose of this exception type is similar to the error condition std::errc::invalid_argument (thrown in std::system_error from member functions of std::thread) and the related errno constant EINVAL.