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
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References: <6RYughwjoNB AT jth DOT ping DOT de>
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To: djgpp AT delorie DOT com
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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 -