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Re: GCC-3.2.2 bootstrap FAILURE: 1 reduce/reduce conflict in objc-parse.y
On Tue, 28 Jan 2003, Ziemowit Laski wrote:
> > A reduce/reduce conflict is certainly an annoyance, but it is not a bug
> > -- bison has a deterministic, POSIX-annointed method for dealing with
> > it, which the grammar writer knows and expects.
On Tue, Jan 28, 2003 at 11:08:03PM +0000, Joseph S. Myers wrote:
> It is, at very least, very bad grammar style, as discussed in the Bison
> manual. The grammar should be changed (even though this may make it more
> complicated) to avoid the conflict.
I disagree. For languages that have a natural LALR(1) grammar, you are
correct, but Objective-C is not necessarily such a language. If the current
parser works, it is wrong to risk breaking it.
My position would be different if we had a large team of active Objective-C
maintainers, but we don't. Changing a grammar that has worked for years
for the sake of purity isn't a good idea, unless someone can demonstrate
that any proposed "fixed" grammar does not introduce any new breakage.