Re: debug a document double click

From:

"Doug Harrison [MVP]" <dsh@mvps.org>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 14 Jun 2007 13:25:32 -0500

Message-ID:

<um0373h6a6fp7rl4sctdvm4mb5bjjm2hjo@4ax.com>

On Thu, 14 Jun 2007 09:41:22 -0700, "David Ching"
<dc@remove-this.dcsoft.com> wrote:

"Doug Harrison [MVP]" <dsh@mvps.org> wrote in message
news:tsq2739mq02fmh31ukjs8e5p34gou1i3pb@4ax.com...

VC6's catch(...) could catch the structured exception thrown by that
function, which I mentioned here:

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

This appears to have been fixed as early as VC 7.1, even under /EHa.

The program I was debugging had installed its own SEH handler, and I'm
almost positive it was built with something later than VC6.

I'm not surprised that an undisciplined SE handler can interfere with
DebugBreak. The interesting thing is that MS apparently fixed catch(...) to
not catch breakpoint exceptions under any condition, with or without /EHa,
before they fixed catch(...) to ignore SEs when using /EHs. IOW, they did a
useful partial fix before implementing a more general fix. I'd have been a
lot happier if they had changed catch(...) to ignore all untranslated SEs
under /EHa, but I suppose that would have broken too much existing (albeit
bad) code.

--
Doug Harrison
Visual C++ MVP