std::logic_error (3) - Linux Manuals

std::logic_error: std::logic_error


std::logic_error - std::logic_error


Defined in header <stdexcept>
class logic_error;

Defines a type of object to be thrown as exception. It reports errors that are a consequence of faulty logic within the program such as violating logical preconditions or class invariants and may be preventable.
No standard library components throw this exception directly, but the exception types std::invalid_argument, std::domain_error, std::length_error, std::out_of_range, std::future_error, and std::experimental::bad_optional_access are derived from std::logic_error.
 std-logic error-inheritance.svg
Inheritance diagram

Member functions

              constructs the exception object
constructor (public member function)


explicit logic_error( const std::string& what_arg ); (1)
explicit logic_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::logic_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

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

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