VisualC ++ Exception Specifications

VisualC ++ Exception Specifications

The word Exception Specifications is "abnormal specification". I don't know if it is accurate. I hope you can be more accurate.

The exception type is used to indicate the exceptions that a function can throw.

Function can throw any type of exception

void MyFunction(int i) throw(...); 

Function cannot throw an exception

void MyFunction(int i) throw(); 

It is equivalent

void __declspec(nothrow) MyFunction(int i) throw();

Visual C ++ and Standard C ++ are implemented in the exception specification. The following describes the exception specification of Visual C ++.

Exception Specification	Meaning
Throw ()	The function does not throw an exception.
Throw (...)	Function can throw any exception
Throw (type)	The function throws a type exception.

The behavior of a function to throw an exception also depends on the following factors:

Whether the function compilation method is C or C ++/EH is related to the specified exception specification (/EH: exception handling mode ).

The following is a detailed description:

Function	/ESCs	/EHs	/EHa	/EHac
C function	Throw ()	Throw (...)	Throw (...)	Throw (...)
C ++ function with no exception specification	Throw (...)	Throw (...)	Throw (...)	Throw (...)
C ++ function with throw () exception specification	Throw ()	Throw ()	Throw (...)	Throw (...)
C ++ function with throw (...) exception specification	Throw (...)	Throw (...)	Throw (...)	Throw (...)
C ++ function with throw (type) exception specification	Throw (...)	Throw (...)	Throw (...)	Throw (...)

P.S: For more information, see MSDN2008.