From 1757970370475363811 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,96a8c01f7043c2d9 X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 2002-09-27 09:42:56 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!kibo.news.demon.net!mutlu.news.demon.net!demon!mail2news.demon.co.uk!devnull From: francis.glassborow@ntlworld.com (Francis Glassborow) Newsgroups: comp.std.c++ Subject: Re: Proposal: exception stack unwinding resumption Date: Fri, 27 Sep 2002 16:42:55 +0000 (UTC) Organization: Southfield Microcomputer SS Lines: 91 Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: References: <6df0c6a8.0208260746.633710cb@posting.google.com> <23b84d65.0209161107.23bea618@posting.google.com> <6df0c6a8.0209170602.2cb54634@posting.google.com> <6df0c6a8.0209201925.6faa9e57@posting.google.com> <6df0c6a8.0209230602.2aba3ca8@posting.google.com> <6df0c6a8.0209240716.6fb5ec00@posting.google.com> Mime-Version: 1.0 Content-Type: text/plain;charset=us-ascii;format=flowed X-Trace: mail2news.demon.co.uk 1033144975 5962 10.0.0.1 (27 Sep 2002 16:42:55 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Fri, 27 Sep 2002 16:42:55 +0000 (UTC) X-Received: from mulga.cs.mu.oz.au ([128.250.1.22]) by news.demon.co.uk with esmtp (Exim 4.05) id 17uyCc-0001Y1-00 for mail2news@news.news.demon.net; Fri, 27 Sep 2002 16:42:54 +0000 X-Received: from localhost (localhost [[UNIX: localhost]]) by mulga.cs.mu.OZ.AU id CAA16438; Sat, 28 Sep 2002 02:42:17 +1000 (EST) X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Path: comp-std-cpp-robomod!not-for-mail X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Delivered-To: std-c++@ncar.ucar.edu X-Reply-To: Francis Glassborow X-Newsgroups: comp.std.c++ X-User-Agent: Turnpike/6.01-U () Xref: archiver1.google.com comp.std.c++:14277 In article , Garry Lancaster writes >#include >#include >#include > >class B >{ >public: > ~B() > { > std::cout << "~B\n"; > if( std::uncaught_exception() ) std::cout << "Unwinding.\n"; > throw std::string( "~B" ); > } >}; > >class A : public B >{ >public: > ~A() > > > std::cout << "~A\n"; > throw std::string( "~A" ); > } >}; > >int main() >{ > try > { > A a; > } > catch(const std::string s) > { > std::cout << "Caught exception thrown by " << s << ".\n"; > } > std::cout << "Exiting normally.\n"; >} > >If I understand Bob Bell's reasoning correctly, he is saying that >the program should print: > >~A >Caught exception thrown by ~A. >Exiting normally. > >I wonder if CodeWarrior 7 would agree? > >MSVC7 gives: > >~A >~B >Unwinding. > >then terminates. > >and Borland C++ Builder 5 gives: > >~A >~B > >then terminates. And if I have followed that code correctly (allowing for typos) I believe that it should produce: ~A ~B Unwinding Caught exception thrown by ~A exiting normally And I think that is the only meaningful interpretation of the sentences I quoted. -- Francis Glassborow ACCU 64 Southfield Rd Oxford OX4 1PA +44(0)1865 246490 All opinions are mine and do not represent those of any organisation --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.jamesd.demon.co.uk/csc/faq.html ]