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From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: What's going on
Date:	22 Jan 2002 13:54:08 GMT
Organization:	Aachen University of Technology (RWTH)
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Jade <jade AT cdict DOT umcc DOT cu> wrote:

> I put this as an example because it makes the same thing that the
> program I'm working on. I compile both with the following command
> line
> gcc <program.c>  -o <program.exe> 

> and the compiler didn't told me a single warning.

Of course it didn't --- you didn't ask for any warnings. A
nd there's a large part of your problem already.  Almost always,
but definitely when you're looking for the source of some problem, you
*want* to ask for a rather high warning level.

I.e. whenever things seem fishy, or even better yet right from the
beginning, use

	gcc -Wall -O2 -g <program.c> -o <program.exe>

to compile your programs.  Just see what this would have told you
about your program:

tt.c: In function `main':
tt.c:5: warning: format argument is not a pointer (arg 2)
tt.c:7: warning: format argument is not a pointer (arg 2)
tt.c:8: warning: control reaches end of non-void function

Those warnings about the format argument not being a pointer point
exactly towards your problem: argv's type is wrong, so now argv[0]
isn't a pointer to char, as it should be, but rather a char.

> I'm working on a pentium adn running gcc under windows 2000 pro.

Please be aware that for Win2K pro, you need a special version of
DJGPP to avoid the new bugs Microsoft once more managed to put into
the new version of it's "professional" operating system.

-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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