std::system_error
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std::system_error
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.
std-system error-inheritance.svg
Inheritance diagram
[edit] Member functions
Inherited from std::exception
Member functions
[edit] Example
Run this code
#include <iostream> #include <system_error> #include <thread> 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"; } }
Possible output:
Caught system_error with code [generic:22] meaning [Invalid argument]