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At some point hitherto, John Abreau hath spake thusly:
> You said "under some circumstances"; can you expand on that? When
> would it *not* work?

I'm unfamiliar with a lot of the more advanced uses of GDB, but in
addition to the author's response, I can think of one more case where
I believe this will not work: where there are no streams involved.

freopen() opens a file, and reassociates the stream given as the last
argument with that file.  If the file was opened with open(), there is
no stream to associate.

What I'm not clear on is whether or not some trickery can be done to
do fdopen() followed by freopen().  If this is possible, it might
work.  But I don't know how one would take the resulting stream
pointer (from the call to fdopen()) and pass it to the subsequent call
to freopen()...  First off, the pointer would (I think) have to
already exist in the program space, which is probably unlikely, or in
many cases impossible to determine.  Secondly, whatever value it
contained would have to be irrelevant to the rest of the execution of
the program, since you're going to modify it.  Then, maybe, you could
pass it as an argument to freopen()...  Yes?


- -- 
Derek Martin               ddm@pizzashack.org    
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