From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Seebach <seebs@monolith.solon.com>
To: egcs@cygnus.com
Subject: Huh?
Date: Tue, 19 Aug 1997 17:54:31 -0000
Message-id: <199708191611.LAA03742@monolith.solon.com>
X-SW-Source: 1997-08/0160.html

I'm curious about this...

I submitted some patches, some time ago, to add warnings for non-int-main.

They have all been changed to "pedwarn".

All of my belief that "-pedantic" should be the default aside, this is
Just Plain Wrong.

Why?

Because, it is a flat out *bug* that
	gcc -Wmain
will not warn for suspicious declarations of main.

These are *NOT* pedantic warnings, they are plain old warnings, which are
desirable if warn_main has been set.  My default behavior was to set -Wmain
if -Wall is set, unless one has selected a freestanding environment; this
may or may not be correct, but as long as there is a warn_main, it is a
bug for the warnings to be under pedwarn.

If anyone knows when or why this was changed, I'd like to know, because I
am vaguely miffed that some code I put some real effort into (mostly
because I'd never even looked at gcc internals before :) ) has been,
AFAIK, gratuitously broken.

If someone has a problem with -Wall implying -Wmain, the thing to do is
not to break -Wmain, but to remove it from the code that handles -Wall,
and presumably also to change the documentation.  :)

I would recommend, however, that -Wmain be implied by -Wall; it is a
common, easy-to-fix, error to misdeclare main.

N.B.:  If reverting pedwarn to warn, *DO NOT* do this to the warning for the
3rd argument if it is (char **), this is intentionally only a pedwarn, because
envp used to be The Right Thing, and is specifically documented as a common
extension in C89.

-s