std::length_error (3) - Linux Manuals
Defined in header <stdexcept>
Defines a type of object to be thrown as exception. It reports errors that result from attempts to exceed implementation defined length limits for some object.
This exception is thrown by member functions of std::basic_string and std::vector::reserve
constructor (public member function)
explicit length_error( const std::string& what_arg ); (1)
explicit length_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::length_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
destructor destroys the exception object
what returns an explanatory string
resize (public member function of std::basic_string<CharT,Traits,Allocator>)