Bug report comes from SO:
http://stackoverflow.com/questions/19330171/controlling-a-parse-with-arbitrary-predicates-not-working-in-bison
Example failing grammar:
The following was copied from bison manual section 1.5.4. It was minimized
by leaving out second widget production; the two declaration
(Collected from a StackOverflow question; see
https://stackoverflow.com/questions/48672697/why-does-the-use-of-yyclearin-not-trigger-destructor-in-bison
)
As indicated in the question and answer, yyclearin simply marks the
lookahead token as YYEMPTY. Its associated value is not destructed, and
wil
On Mar 10, 2018 19:26, "Frank Heckenbach" wrote:
Hans Åberg wrote:
> >>> so expensive. Also bison by default reserve()s 200 entries, and I
>
> >>> Even if so, it's still a good idea to keep it, so vector basically
> >>> never actually needs to reallocate.
> >>
> >> It depends on the gra
Collected from Stack Overflow question
https://stackoverflow.com/questions/50550637/bison-semantic-predicate-syntax-error-stray
Version: 3.04 (also fails on 3.01 and 3.02)
Platform: Linux but I think it would be the same on any platform
To reproduce, it is possible to use the semantic predicate t
I enthusiastically support this proposal.
I agree with the preference for prefix positioning. The `%type` keyword is
just noise, imho, and thus unnecessary.
I like the `name={ code }` syntax, too, but it's probably too late
for that. Perhaps `{ code }[name]` would be a plausible alternative
synta
Hi, Akim
I'd try
return 0 < rhs || 0 - (static_cast(rhs)) < lhs
Or the redundant but harmless
return 0 < rhs || static_cast(-(static_cast(rhs))) < lhs
C4146 is a warning, not an error. It's telling you that if u is unsigned,
-u is still unsigned. The intent is help people avoid doing t
On Sat, Aug 18, 2018, 10:03 Akim Demaille wrote:
> Hi Rici!
>
> > Le 18 août 2018 à 16:45, Rici Lake a écrit :
> >
> > Hi, Akim
> >
> > I'd try
> >
> > return 0 < rhs || 0 - (static_cast(rhs)) < lhs
>
> Good idea!
>
> &g
Works for me. (Not that I tried it or anything :-) I don't have Visual
Studio anywhere.)
2018-08-18 10:33 GMT-05:00 Akim Demaille :
>
> > Le 18 août 2018 à 17:10, Rici Lake a écrit :
> >
> >> I don’t remember why I wrote it this way, but today I don’t care much
>
This is really a problem in kannel, not in bison. Kannel's bison source
file uses a feature which has been deprecated since 2003. Support for this
feature was removed with the bison 3.0 release.
There's a bug in the kannel bug tracker dating from 2014, which includes a
description of the problem b
Sorry, I omitted the link to the new entry in the Kannel bug-tracker:
https://redmine.kannel.org/issues/699#note-5
2018-08-18 11:07 GMT-05:00 Rici Lake :
> This is really a problem in kannel, not in bison. Kannel's bison source
> file uses a feature which has been deprecated since 20
Vaguely on this topic, since you seem to be working on a new release:
On Sun, Aug 19, 2018, 10:23 Akim Demaille wrote:
>
> Note that you don’t have anything to do to reset the parser, all the
> problem is actually the scanner. The parser object holds no state,
> everything is local to yyparse.
Update: my patch has been committed to kannel's SVN, and there is at least
one report that it fixes the build problem.
On Sat, Aug 18, 2018, 11:08 Rici Lake wrote:
> Sorry, I omitted the link to the new entry in the Kannel bug-tracker:
> https://redmine.kannel.org/issues/699#note-5
(Modified from an email originally sent privately to Akim, who persuaded me
to make it public. It's really a minor point.)
I only just noticed that %nterm is a bison directive, although I still
don't fully understand the motivation. I can't find any reference in the
manual, except for its unexplai
El jue., 25 oct. 2018 a las 3:21, Victor Khomenko (<
victor.khome...@newcastle.ac.uk>) escribió:
>
> Well, when in Rome do as Romans do... This chapter is for C/C++
> programmers, not Go. Some of them are not even familiar with the new
> syntax. If you check cppreference website, they don't use tr
Hi, Akim and bisonistas,
This came up today on SO:
https://stackoverflow.com/questions/62658368/unknown-type-yypcontext-t-in-bison.
The user complained that their attempt to declare `yyreport_syntax_error`
failed because `yypcontext_t` was not defined. (The declaration was put in
a `%{` code secti
LGTM. Thanks.
El mar., 30 jun. 2020 a las 12:41, Akim Demaille ()
escribió:
> Hi Rici!
>
> > Le 30 juin 2020 à 18:23, Rici Lake a écrit :
> >
> > Hi, Akim and bisonistas,
> >
> > This came up today on SO:
> >
> https://stackoverflow.com/question
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