Re: suggest gcc option -Wallall to add absolutely every -W* option

[Joe Buck <jbuck at synopsys dot com>]

> Hmmm, how about renaming -Wall to -Wgnu ?
> It really contains some warnings that make only sense when using
> formatting according to the GNU coding standard.

Sorry, but that's not a serious option.  The world relies on -Wall working
much as it works now; many projects, both freeware and otherwise, have a
standard that -Wall runs clean.  This means that only warnings that can be
silenced without degrading code quality go into -Wall.  Furthermore, we
can't change the names of switches that people have been using for years.

(Seriously: please don't ask for changes to egcs that have the effect
of breaking half the makefiles on the planet).

I am curious as to what warnings you think make sense only for formatting
using the GNU coding standard.  If you're talking about -Wparentheses
and such, they do catch many accidental errors, like
	if (a = 0) ...
rather than
	if (a == 0)
and this is worth asking people to put in extra parenths in some cases
to be sure that they mean what the C language says.