From:	un1t AT rz DOT uni-karlsruhe DOT de (Matthias Baas)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: exceptions in djgpp incomplete
Date:	Wed, 26 Feb 1997 17:35:22 GMT
Organization:	University of Karlsruhe, Germany
Lines:	22
Message-ID:	<5f1s9n$3ba$2@nz12.rz.uni-karlsruhe.de>
References:	<6RYughwjoNB AT jth DOT ping DOT de>
NNTP-Posting-Host:	rzstud2.rz.uni-karlsruhe.de
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

jth AT jth DOT ping DOT de (Jens Theisen) wrote:

>I have noticed that exception handling in djgpp isn't fully supported, at  
>least not in my version 2.7.2. Exceptions can only be caught as they are  
>thrown. No exception handler can catch a subclass from the class he wants  
>to have. I have testet a trivial program on both djgpp, gcc under linux  
>and watcom c++. Watcom C++ behaves the Stroustrup way, both other simply  
>don't catch my exception.

Add the compiler option -frtti (rtti=Run-Time Type information) and
#include <typeinfo> on top of your programs, then you're able to catch
derived classes just by specifying the base class.

>Besides, my djgpp sometimes crashes when dealing with exceptions, although  
>this need not necessarily be the fault of djgpp.

Did you use fstreams? My programs always crash when I try to use
fstreams and exception handling.

- Matthias -

- Raw text -