Re: GCC-3.2.2 bootstrap FAILURE: 1 reduce/reduce conflict in objc-parse.y

[Stan Shebs <shebs at apple dot com>]

Joseph S. Myers wrote:

> On Tue, 28 Jan 2003, Ziemowit Laski wrote:
>
>
> > I respectfully part company. :-)  The grammar must, first and
> > foremost, be readable and maintainable.  Why else would one use a
> > parser generator in the first place?
> Maintainability is the reason to avoid parser conflicts.  Every change to
> a parser that changes the number of conflicts requires all the conflicts
> to be examined carefully to ensure that the parser will parse correctly in
> each case and that no conflicts have been added without good reason.
It's been on my wishlist to tweak the grammar to make Bison's complaints go
away, mostly because I don't trust it not to change randomly in some way
that causes s/r and r/r cases to come out differently.  It's just that it's
crushingly dull work, and more fun to think about adding ObjC to the new
recursive descent parser... :-)

Stan

>