Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type

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From	Hans Aberg <haberg-news@telia.com>
Newsgroups	comp.compilers
Subject	Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type
Date	Mon, 31 Oct 2011 20:49:28 +0100
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On 2011/10/31 14:15, Alessandro Basili wrote:
> ... then I got the following message:
>
>> cd .; bison -v -d c-parse.y -o c-parse.c
>> c-parse.y: conflicts: 10 shift/reduce
>> c-parse.y: expected 8 shift/reduce conflicts
>
> I believe I'm in the dark here.

Usually, it means that one has to get hold of the authors of the
package, to find out what they had in mind:

One can deliberately leave shift/reduce conflicts, in which case Bison
will issue a warning, which can be suppressed %expect (see section 3.7.8
"Suppressing Conflict Warnings" in the Bison manual).

However, there is no way to be sure of that. Especially when it say
expected 8, and you got 10. But the compile and parser will run.

Hans
[I made the obvious patches and also got 10 rather than 8.  I agree,
give this decade-old code a try and see if it works. -John]

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bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type Alessandro Basili <alessandro.basili@cern.ch> - 2011-10-31 14:15 +0100
  Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type Hans Aberg <haberg-news@telia.com> - 2011-10-31 20:49 +0100
    Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type Alessandro Basili <alessandro.basili@cern.ch> - 2011-11-02 09:45 +0100
  Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type George Neuner <gneuner2@comcast.net> - 2011-11-02 12:33 -0400
    Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type George Neuner <gneuner2@comcast.net> - 2011-11-04 12:56 -0400
      Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type Alessandro Basili <alessandro.basili@cern.ch> - 2011-11-06 19:24 +0100
        Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-11-07 05:08 +0000
        Re: bison c-parse.y:1115.19-20: $$ for the midrule at $4 of `structsp' has no declared type George Neuner <gneuner2@comcast.net> - 2011-11-07 03:18 -0500

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