std::system_error
From cppreference.com
Defined in header
<system_error>
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class system_error;
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(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 needs to be reported.
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[edit] Member functions
constructs the system_error object (public member function) |
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returns error code (public member function) |
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[virtual]
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returns explanatory string (virtual public member function) |
Inherited from std::exception
Member functions
[virtual]
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destructs the exception object (virtual public member function of std::exception )
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[virtual]
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returns an explanatory string (virtual public member function of std::exception )
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[edit] 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