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Re: bison bug.

From: Akim Demaille
Subject: Re: bison bug.
Date: 22 Dec 2001 15:51:07 +0100
User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Civil Service)

| This isn't the only bug I have run across in bison, but I belive they are
| all symptoms of the same bug. 

I don't think so, 1.30 has a lot of problems.

| I belive a some internal variable is to
| small. As you can see the number 256 rules is rather telling. 255 is
| acceptable, 256 produces the bug.

Your test case doesn't make it clear exactly what is the problem?  The
total number of rules only, or is the number of symbols on the RHS

Whatever the answer, I agree this is a bug.  Nonetheless, it is not
clear how to fix it: die with dignity diagnosing an overflow, or try
to work with such grammars?

In other words: is your test case realistic of some real condition
uses, or just a torture test?

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