_seh_filter_dll, _seh_filter_exe
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Identifies the exception and the related action to be taken.
Syntax
int __cdecl _seh_filter_dll(
unsigned long _ExceptionNum,
struct _EXCEPTION_POINTERS* _ExceptionPtr
);
int __cdecl _seh_filter_exe(
unsigned long _ExceptionNum,
struct _EXCEPTION_POINTERS* _ExceptionPtr
);
Parameters
[in] _ExceptionNum
The identifier for the exception.
[in] _ExceptionPtr
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
These methods are called by the exception-filter expression of the try-except Statement. The method consults a constant internal table to identify the exception and determine the appropriate action, as shown here. 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: corecrt_startup.h