From: "Betelgeuse" <iam@[removethis]cadvision.com>
Newsgroups: comp.os.msdos.djgpp
References: <0519f96f DOT 5fb31bd3 AT usw-ex0104-033 DOT remarq DOT com>
Subject: Re: Exception Handling
Date: Tue, 18 Jul 2000 19:31:07 -0700
Lines: 89
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400
NNTP-Posting-Host: 207.148.139.92
X-Original-NNTP-Posting-Host: 207.148.139.92
Message-ID: <397506f6_7@news.cadvision.com>
X-Trace: 18 Jul 2000 19:40:06 -0700, 207.148.139.92
Organization: CADVision Development Corporation (http://www.cadvision.com/)
X-Original-NNTP-Posting-Host: 204.50.1.43
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hawdy pardna!

:)

I believe strcpy() requires a pre-initialized destination, i.e.,

char *exception::errorMessage;

should perhaps be

char exception::errorMessage[256];

or, have your constructor do the initialization:

exception::exception()
{
    errorMessage = new char[256];
}

exception::~exception()
{
    delete[] errorMessage;
}



There is also strdup() which might be more suited to this, for example:

exception(char *message)
{
    strcpy(errorMessage, message);
    errorMessage = strdup(message);
}

I haven't worked with exceptions as I haven't found the need yet. Anyway,
hope that helps

- Betelgeuse


"Dogansmoobs" <dogansmoobsNOdoSPAM AT hotmail DOT com DOT invalid> wrote in message
news:0519f96f DOT 5fb31bd3 AT usw-ex0104-033 DOT remarq DOT com...
> I am having a problem with exception handling.  Whenever I try
> to cathch and exception, instead of running what's in the catch
> block, it exits the program and displays Abort!!.  Is there
> something I'm missing, or doing wrong??  Here's what I'm doing:
>
> #include <iosteam>
>
> class exception
> {
>  public:
>    exception(char *message)
>    {
>     strcpy(errorMessage, message);
>    }
>
>    void display()
>    {
>     cout << errorMessage;
>    }
>
>  private:
>    char *errorMessage;
> };
>
> Then whin I want to throw an exception, I say:
>    throw exception("Error message here");
>
> and then catch it using:
>    catch (exception &e)
>
> but it never does this, it just aborts.  And yes, the code that
> produces the exception is in a try block.
>
>  - Dogansmoobs
> http://wookie.freehosting.net/
> I would call myself Duncan Blownuts, but people might think I'm
> insane.
>
>
> -----------------------------------------------------------
>
> Got questions?  Get answers over the phone at Keen.com.
> Up to 100 minutes free!
> http://www.keen.com
>