From -7159538654197689412 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,24c0140d54165625 X-Google-Attributes: gidf78e5,public From: nimel@hem1.passagen.se Subject: Re: a question about temporary exception object Date: 1998/11/07 Message-ID: <721upr$eai$1@nnrp1.dejanews.com>#1/1 X-Deja-AN: 409443732 X-NNTP-Posting-Host: 159.72.248.201 Approved: stephen.clamage@sun.com (comp.std.c++) References: <3642A62C.CF2FC315@ccnet.com> X-Http-User-Agent: Mozilla/4.5b2 [en] (WinNT; I) X-Http-Proxy: 1.0 x8.dejanews.com:80 (Squid/1.1.22) for client 159.72.248.201 Organization: Deja News - The Leader in Internet Discussion X-Article-Creation-Date: Sat Nov 07 17:08:10 1998 GMT Newsgroups: comp.std.c++ Originator: clamage@taumet In article <3642A62C.CF2FC315@ccnet.com>, Gilbert Chang wrote: > > According to the standard, the constructor and the destructor of Foo > should be called exactly once for each in the first case, but they could > be called either once for each or twice for each. Is my understanding > correct? > > I experimented with VC++6.0. In both cases, the constructor was called > once, but the destructor was called twice. Did I do something wrong or > is the compiler simply broken? I tried the same thing on VC++ 6.0. For me both the constructor and the destructor was called once when catching by reference, and twice when catching by value. My guess is that you forgot to count the copy constructor. Below is the output from my test: begin throwing Foo Foo ctor caught Foo& Foo dtor throwing Foo Foo ctor Foo copy ctor caught Foo Foo dtor Foo dtor end /Niklas Mellin -----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own [ 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://reality.sgi.com/austern_mti/std-c++/faq.html ]