Defined in header <stdexcept> | ||
---|---|---|
class runtime_error; |
Defines a type of object to be thrown as exception. It reports errors that are due to events beyond the scope of the program and can not be easily predicted.
Exceptions of type std::runtime_error
are thrown by the following standard library components: std::locale::locale
and std::locale::combine
.
In addition, the standard exception types std::range_error
, std::overflow_error
, std::underflow_error
, std::regex_error
, and std::system_error
are derived from std::runtime_error
.
Inheritance diagram.
(constructor) | constructs the exception object (public member function) |
explicit runtime_error( const std::string& what_arg ); | (1) | |
explicit runtime_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::exception
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
.
[virtual] | destructs the exception object (virtual public member function of std::exception ) |
[virtual] | returns an explanatory string (virtual public member function of std::exception ) |
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