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cacdfc2f6e
Since Bison 3.3, semantic values in rule actions (i.e., '$...') are passed to the m4 backend as the symbol number. Unfortunately, when there are unused symbols, the symbols are renumbered _after_ the numbers were used in the rule actions. As a result, the evaluation of the skeleton failed because it used non existing symbol numbers. Which is the happy scenario: we could use numbers of other existing symbols... Reported by Balázs Scheidler. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00044.html Translating the rule actions after the symbol renumbering moves too many parts in bison. Relying on the symbol identifiers is more troublesome than it might first seem: some don't have an identifier (tokens with only a literal string), some might have a complex one (tokens with a literal string with characters special for M4). Well, these are tokens, but nterms also have issues: "dummy" nterms (for midrule actions) are named $@32 etc. which is risky for M4. Instead, let's simply give M4 the mapping between the old numbers and the new ones. To avoid confusion between old and new numbers, always emit pre-renumbering numbers as "orig NUM". * data/README: Give details about "orig NUM". * data/skeletons/bison.m4 (__b4_symbol, _b4_symbol): Resolve the "orig NUM". * src/output.c (prepare_symbol_definitions): Pass nterm_map to m4. * src/reduce.h, src/reduce.c (nterm_map): Extract it from nonterminals_reduce, to make it public. (reduce_free): Free it. * src/scan-code.l (handle_action_dollar): When referring to a nterm, use "orig NUM". * tests/reduce.at (Useless Parts): New, based Balázs Scheidler's report.
219 lines
9.7 KiB
Plaintext
219 lines
9.7 KiB
Plaintext
Bison was originally written by Robert Corbett. It would not be what
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it is today without the invaluable help of these people:
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Aaro Koskinen aaro.koskinen@iki.fi
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Аскар Сафин safinaskar@mail.ru
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Adam Sampson ats@offog.org
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Airy Andre Airy.Andre@edf.fr
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Akim Demaille akim@lrde.epita.fr
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Albert Chin-A-Young china@thewrittenword.com
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Alexander Belopolsky alexb@rentec.com
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Alexandre Duret-Lutz adl@lrde.epita.fr
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Andre da Costa Barros andre.cbarros@yahoo.com
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Andreas Schwab schwab@suse.de
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Andrew Suffield asuffield@users.sourceforge.net
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Angelo Borsotti angelo.borsotti@gmail.com
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Anthony Heading ajrh@ajrh.net
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Antonio Silva Correia amsilvacorreia@hotmail.com
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Arnold Robbins arnold@skeeve.com
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Art Haas ahaas@neosoft.com
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Askar Safin safinaskar@mail.ru
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Balázs Scheidler balazs.scheidler@oneidentity.com
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Baron Schwartz baron@sequent.org
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Ben Pfaff blp@cs.stanford.edu
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Benoit Perrot benoit.perrot@epita.fr
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Bernd Edlinger bernd.edlinger@hotmail.de
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Bernd Kiefer kiefer@dfki.de
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Bert Deknuydt Bert.Deknuydt@esat.kuleuven.ac.be
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Bill Allombert Bill.Allombert@math.u-bordeaux1.fr
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Bob Rossi bob@brasko.net
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Brandon Lucia blucia@gmail.com
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Brooks Moses bmoses@google.com
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Bruce Lilly blilly@erols.com
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Bruno Haible bruno@clisp.org
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Charles-Henri de Boysson de-boy_c@epita.fr
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Christian Burger cburger@sunysb.edu
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Colin Daley colin.daley@outlook.com
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Cris Bailiff c.bailiff+bison@awayweb.com
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Cris van Pelt cris@amf03054.office.wxs.nl
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Csaba Raduly csaba_22@yahoo.co.uk
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Dagobert Michelsen dam@baltic-online.de
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Daniel Frużyński daniel@poradnik-webmastera.com
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Daniel Galloway dg1751@att.com
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Daniel Hagerty hag@gnu.org
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David Barto david.barto@sparqlcity.com
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David J. MacKenzie djm@gnu.org
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David Kastrup dak@gnu.org
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David Michael fedora.dm0@gmail.com
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Dengke Du dengke.du@windriver.com
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Denis Excoffier gcc@Denis-Excoffier.org
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Dennis Clarke dclarke@blastwave.org
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Derek Clegg derek@me.com
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Derek M. Jones derek@knosof.co.uk
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Di-an Jan dianj@freeshell.org
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Dick Streefland dick.streefland@altium.nl
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Didier Godefroy dg@ulysium.net
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Efi Fogel efifogel@gmail.com
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Enrico Scholz enrico.scholz@informatik.tu-chemnitz.de
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Eric Blake ebb9@byu.net
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Étienne Renault renault@lrde.epita.fr
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Evgeny Stambulchik fnevgeny@plasma-gate.weizmann.ac.il
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Fabrice Bauzac noon@cote-dazur.com
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Ferdinand Thiessen ferdinand@fthiessen.de
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Florian Krohm florian@edamail.fishkill.ibm.com
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Frank Heckenbach frank@g-n-u.de
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Frans Englich frans.englich@telia.com
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Gabriel Rassoul gabriel.rassoul@epita.fr
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Gary L Peskin garyp@firstech.com
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Georg Sauthoff gsauthof@TechFak.Uni-Bielefeld.DE
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George Neuner gneuner2@comcast.net
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Gilles Espinasse g.esp@free.fr
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Goran Uddeborg goeran@uddeborg.se
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Guido Trentalancia trentalg@aston.ac.uk
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H. Merijn Brand h.m.brand@hccnet.nl
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Hans Åberg haberg-1@telia.com
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Horst Von Brand vonbrand@inf.utfsm.cl
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Jan Nieuwenhuizen janneke@gnu.org
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Jannick thirdedition@gmx.net
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Jerry Quinn jlquinn@optonline.net
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Jesse Thilo jthilo@gnu.org
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Jim Kent jkent@arch.sel.sony.com
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Jim Meyering jim@meyering.net
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Joel E. Denny joeldenny@joeldenny.org
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Johan van Selst johans@stack.nl
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John Horigan john@glyphic.com
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Jonathan Fabrizio jonathan.fabrizio@lrde.epita.fr
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Jonathan Nieder jrnieder@gmail.com
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Josh Soref jsoref@gmail.com
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Juan Manuel Guerrero juan.guerrero@gmx.de
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Kees Zeelenberg kzlg@users.sourceforge.net
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Keith Browne kbrowne@legato.com
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Ken Moffat zarniwhoop@ntlworld.com
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Kiyoshi Kanazawa yoi_no_myoujou@yahoo.co.jp
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Laurent Mascherpa laurent.mascherpa@epita.fr
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Lie Yan lie.yan@kaust.edu.sa
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Magnus Fromreide magfr@lysator.liu.se
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Marc Autret autret_m@epita.fr
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Marc Mendiola mmendiol@usc.edu
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Mark Boyall wolfeinstein@gmail.com
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Martin Jacobs martin.jacobs@arcor.de
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Martin Mokrejs mmokrejs@natur.cuni.cz
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Martin Nylin martin.nylin@linuxmail.org
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Matt Kraai kraai@alumni.cmu.edu
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Matt Rosing rosing@peakfive.com
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Maxim Prohorenko Maxim.Prohorenko@gmail.com
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Michael Catanzaro mcatanzaro@gnome.org
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Michael Felt mamfelt@gmail.com
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Michael Hayes m.hayes@elec.canterbury.ac.nz
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Michael Raskin 7c6f434c@mail.ru
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Michel d'Hooge michel.dhooge@gmail.com
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Michiel De Wilde mdewilde.agilent@gmail.com
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Mickael Labau labau_m@epita.fr
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Mike Castle dalgoda@ix.netcom.com
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Mike Frysinger vapier@gentoo.org
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Mike Sullivan Mike.sullivan@Oracle.COM
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Nate Guerin nathan.guerin@riseup.net
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Neil Booth NeilB@earthling.net
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Nelson H. F. Beebe beebe@math.utah.edu
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Nick Bowler nbowler@elliptictech.com
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Nicolas Bedon nicolas.bedon@univ-rouen.fr
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Nicolas Burrus nicolas.burrus@epita.fr
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Nicolas Tisserand nicolas.tisserand@epita.fr
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Noah Friedman friedman@gnu.org
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Odd Arild Olsen oao@fibula.no
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Oleg Smolsky oleg.smolsky@pacific-simulators.co.nz
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Oleksii Taran oleksii.taran@gmail.com
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Oliver Mangold o.mangold@gmail.com
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Paolo Bonzini bonzini@gnu.org
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Paolo Simone Gasparello djgaspa@gmail.com
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Pascal Bart pascal.bart@epita.fr
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Paul Eggert eggert@cs.ucla.edu
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Paul Hilfinger Hilfinger@CS.Berkeley.EDU
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Per Allansson per@appgate.com
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Peter Eisentraut peter_e@gmx.net
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Peter Fales psfales@lucent.com
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Peter Hamorsky hamo@upjs.sk
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Peter Simons simons@cryp.to
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Petr Machata pmachata@redhat.com
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Pho pho@cielonegro.org
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Piotr Gackiewicz gacek@intertel.com.pl
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Piotr Marcińczyk piomar123@gmail.com
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Quentin Hocquet hocquet@gostai.com
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Quoc Peyrot chojin@lrde.epita.fr
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R Blake blakers@mac.com
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Raja R Harinath harinath@cs.umn.edu
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Ralf Wildenhues Ralf.Wildenhues@gmx.de
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Rich Wilson richaw@gmail.com
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Richard Stallman rms@gnu.org
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Rici Lake ricilake@gmail.com
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Rob Conde rob.conde@ai-solutions.com
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Rob Vermaas rob.vermaas@gmail.com
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Robert Anisko anisko_r@epita.fr
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Robert Yang liezhi.yang@windriver.com
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Roland Levillain roland@lrde.epita.fr
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Satya Kiran Popuri satyakiran@gmail.com
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Sebastian Setzer sebastian.setzer.ext@siemens.com
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Sebastien Fricker sebastien.fricker@gmail.com
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Sébastien Villemot sebastien@debian.org
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Sergei Steshenko sergstesh@yahoo.com
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Shura debil_urod@ngs.ru
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Simon Sobisch simonsobisch@web.de
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Stefano Lattarini stefano.lattarini@gmail.com
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Stephen Cameron stephenmcameron@gmail.com
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Steve Murphy murf@parsetree.com
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Sum Wu sum@geekhouse.org
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Théophile Ranquet theophile.ranquet@gmail.com
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Thiru Ramakrishnan thiru.ramakrishnan@gmail.com
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Thomas Jahns jahns@dkrz.de
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Tim Josling tej@melbpc.org.au
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Tim Landscheidt tim@tim-landscheidt.de
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Tim Van Holder tim.van.holder@pandora.be
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Tobias Frost tobi@debian.org
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Tom Lane tgl@sss.pgh.pa.us
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Tom Tromey tromey@cygnus.com
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Tommy Nordgren tommy.nordgren@chello.se
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Troy A. Johnson troyj@ecn.purdue.edu
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Tys Lefering gccbison@gmail.com
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Valentin Tolmer nitnelave1@gmail.com
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Victor Khomenko victor.khomenko@newcastle.ac.uk
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Victor Zverovich victor.zverovich@gmail.com
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Vin Shelton acs@alumni.princeton.edu
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W.C.A. Wijngaards wouter@NLnetLabs.nl
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Wayne Green wayne@infosavvy.com
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Wei Song wsong83@gmail.com
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Wojciech Polak polak@gnu.org
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Wolfgang S. Kechel wolfgang.kechel@prs.de
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Wolfgang Thaller wolfgang.thaller@gmx.net
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Wolfram Wagner ww@mpi-sb.mpg.de
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Wwp subscript@free.fr
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xolodho xolodho@gmail.com
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Zack Weinberg zack@codesourcery.com
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長田偉伸 cbh34680@iret.co.jp
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Many people are not named here because we lost track of them. We
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thank them! Please, help us keeping this list up to date.
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Local Variables:
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mode: text
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coding: utf-8
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End:
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-----
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Copyright (C) 2000-2015, 2018-2019 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Parser Generator.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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