From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: no warning without #include
Date:	Sat, 05 Feb 2000 15:49:17 +0200
Organization:	NetVision Israel
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To:	djgpp AT delorie DOT com
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Newline wrote:
> 
> So i used the strcpy function but not included <string.h>. When i compile
> this with DJGPP gcc
> I'm not able to get any warning that I didn't include string.h. Why is this
> ?
> (I used 'gcc -c test.c -o test.o -Wall' to compile)

That's because GCC generates inline code for strcpy (and some other
functions) whenever their arguments are compile-time constants, like in your
case.

Try adding -fno-builtin, and you will see your warning about strcpy.

I don't know if the lack of a warning is a bug; I suggest posting a question
to the gnu.gcc.bug news group, where the GCC maintainers will answer it.

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