_XcptFilter

Identifies the exception and the related action to be taken.

int __cdecl _XcptFilter(
   unsigned long xcptnum,
   PEXCEPTION_POINTERS pxcptinfoptrs
);

Parameters

• [in] xcptnum
  The identifier for the exception.

• [in] pxcptinfoptrs
  A pointer to the exception information.

Return Value

An integer that indicates the action to be taken, based on the result of exception processing.

Remarks

This method is called by the exception-filter expression of the try-except Statement. The method consults the _XcptActTab[] table to identify the exception and determine the appropriate action. _XcptActTab[] is a constant and is defined as shown in the following table. The exception numbers are defined in winnt.h and the signal numbers are defined in signal.h.

Exception Number (unsigned long)	Signal Number
STATUS_ACCESS_VIOLATION	SIGSEGV
STATUS_ILLEGAL_INSTRUCTION	SIGILL
STATUS_PRIVILEGED_INSTRUCTION	SIGILL
STATUS_FLOAT_DENORMAL_OPERAND	SIGFPE
STATUS_FLOAT_DIVIDE_BY_ZERO	SIGFPE
STATUS_FLOAT_INEXACT_RESULT	SIGFPE
STATUS_FLOAT_INVALID_OPERATION	SIGFPE
STATUS_FLOAT_OVERFLOW	SIGFPE
STATUS_FLOAT_STACK_CHECK	SIGFPE
STATUS_FLOAT_UNDERFLOW	SIGFPE

Requirements

Header: excpt.h

See Also

Other Resources

Alphabetical Function Reference

Change History

Date	History	Reason
June 2010	Added this document.	Information enhancement.
September 2010	Added the table for _XcptActTab.	Information enhancement.