Xref: news2.mv.net comp.os.msdos.djgpp:2330
From: malcolm AT manawatu DOT gen DOT nz (Malcolm Taylor)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Bug hides with GDB.
Date: Sun, 31 Mar 1996 22:18:12 GMT
Organization: Grafik Software
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References: <4iqeht$c1t AT news DOT manawatu DOT gen DOT nz> <4is391$obf AT mark DOT ucdavis DOT edu> <31532ad9 DOT sandmann AT clio DOT rice DOT edu>
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To: djgpp AT delorie DOT com
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Charles Sandmann <sandmann AT clio DOT rice DOT edu> wrote:

>> Usually the physical addresses change, which means the content of 
>> uninitialized variables change.  

>Exactly.  Try building the app with the crt0.h flag for memory zeroing 
>enabled - and see if the behavior becomes consistent.  The deadbeef flag
>is particularly effective in flushing out bugs.

I have managed to fix the problem, there was a fault in the text file
being read in. I will be putting checks in to deal with this (and give
an appropriate error message). However the interesting thing is I
still don't know why it worked under the debugger. It seems that it
should not have worked in either case. I will be looking into this
further (in case it illuminates a problem with fgetpos or ftell
(although I don't expect that) and if I find anything out of the
ordinary I'll post something.

Thanks,
Malcolm