Feature request: warn on "void main"

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3 total messages Started by Greg Hudson Sat, 30 Nov 1996 00:00

#6107

Author: Greg Hudson
Date: Sat, 30 Nov 1996 00:00

19 lines
1026 bytes

I've recently observed some free software authors use the
justification "it shuts up gcc" when asked why they declare main() as
void.  (Presumably, they're using -Wall).  Since "void main" is not
correct according to ANSI, I would appreciate it if the next version
of gcc could warn about it.  I would advocate warning about it in all
cases, but warning about it only when -Wall is set is fine.

	/* test1.c: warns if compiled with -Wall */
	int main()
	{
	}

	/* test2.c: does not warn even if compiled with -Wall */
	void main()
	{
	}

Thanks.

Re: Feature request: warn on "void main"

#6109

Author: Steven Michael ROBBINS
Date: Sun, 01 Dec 1996 00:00

12 lines
1203 bytes

In article <199612010425.XAA09048@cutter-john.mit.edu>,
Greg Hudson <ghudson@mit.edu> wrote:
> I've recently observed some free software authors use the
> justification "it shuts up gcc" when asked why they declare main() as
> void.  (Presumably, they're using -Wall).  Since "void main" is not
> correct according to ANSI, I would appreciate it if the next version
> of gcc could warn about it.  I would advocate warning about it in all
> cases, but warning about it only when -Wall is set is fine.

I second this.  And it's not just fee software authors that do this;
I've seen it in commercial software.

Re: Feature request: warn on "void main"

#6124

Author: Robert Dick
Date: Thu, 05 Dec 1996 00:00

10 lines
952 bytes

In article <x7viahrdc0.fsf@hexadecimal.uoregon.edu> stevev@hexadecimal.uoregon.edu (Steve VanDevender) writes:

>void main() isn't bad other than it returns an unknown status value to
>exit(); if the program in question isn't depended on to return a
>meaningful exit status then there is no problem.

No.  Check out the ANSI-C FAQ at rtfm.mit.edu.

-Robert Dick (dickrp@wckn.dorm.clarkson.edu)-

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