[TUHS] Archaic yacc C grammar
imp at bsdimp.com
Tue Oct 30 04:37:31 AEST 2018
On Mon, Oct 29, 2018 at 12:30 PM Steve Johnson <scj at yaccman.com> wrote:
> We actually had a pretty good system for making changes like that. First,
> we would change
> the compiler to accept both the old and the new. Then we would produce a
> that on a particular date the old would no longer work. Then we made the
> old an error
> and printed a message about how to fix it. Eventually, we just let it be
> a syntax error.
> This process was applied many times on the way from typeless B to strongly
> typed C.
How long a transition period did you typically have?
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