Re: What does a structured exception look like to C++?

From:

"Carl Daniel [VC++ MVP]" <cpdaniel_remove_this_and_nospam@mvps.org.nospam>

Newsgroups:

microsoft.public.vc.language

Date:

Fri, 21 Nov 2008 08:10:04 -0800

Message-ID:

<OV2ueO$SJHA.5056@TK2MSFTNGP04.phx.gbl>

Doug Harrison [MVP] wrote:

On Thu, 20 Nov 2008 23:13:42 -0800, "rick cameron"
<rbc.sap@newsgroup.nospam> wrote:

If you don't call _set_se_translator, but you
do compile with /EHa, you can catch a Win32 exception such as an
access violation with a

catch (...)

clause. I assume this means that _some_ C++ value is being caught.
And therefore it has a C++ type.

I never could find a C++ type X that I could write in a catch(X)
clause to catch an untranslated SE. Like Igor, I concluded there
isn't one. I would not recommend using catch(...) and /EHa together,
as I think it remains a bad idea for catch(...) to catch raw SEs. I
wrote more about this here:

http://members.cox.net/doug_web/eh.htm

Doug & Igor are both correct - there is no C++ type corresponding to a raw
SE. Instead, the converse is true: there's a native SE exception code that
corresponds to a C++ exception. Under VC++, C++ exception handling is built
on top of the native OS-supplied structured exception handling, not the
other way around.

-cd