Defined in header <system_error> | ||
---|---|---|
class system_error; | (since C++11) |
std::system_error
is the type of the exception thrown by various library functions (typically the functions that interface with the OS facilities, e.g. the constructor of std::thread
) when the exception has an associated std::error_code
, which may be reported.
Inheritance diagram.
Member functions
constructs the system_error object (public member function) | |
returns error code (public member function) | |
[virtual] | returns explanatory string (virtual public member function) |
Inherited from std::exception
Member functions
(destructor)
[virtual] | destructs the exception object (virtual public member function of std::exception ) |
[virtual] | returns an explanatory string (virtual public member function of std::exception ) |
Example
#include <thread> #include <iostream> #include <system_error> int main() { try { std::thread().detach(); // attempt to detach a non-thread } catch(const std::system_error& e) { std::cout << "Caught system_error with code " << e.code() << " meaning " << e.what() << '\n'; } }
Output:
Caught system_error with code generic:22 meaning Invalid argument
Please login to continue.