This is an attempt to acknowledge contributions to the garbage collector.
Early contributions also mentioned (duplicated) in ChangeLog file; details of
later ones should be in "git log".

HISTORY -

  Early versions of this collector were developed as a part of research
projects supported in part by the National Science Foundation
and the Defense Advance Research Projects Agency.

The garbage collector originated as part of the run-time system for
the Russell programming language implementation. The first version of the
garbage collector was written primarily by Alan Demers.  It was then refined
and mostly rewritten, primarily by Hans-J. Boehm, at Cornell U.,
the University of Washington, Rice University (where it was first used for
C and assembly code), Xerox PARC, SGI, and HP Labs.  However, significant
contributions have also been made by many others.

Other contributors (my apologies for any omissions):

Adam Megacz <adam@megac.com>
Adnan Ali
Adrian Bunk <bunk@fs.tum.de>
Adrian Pop <adrian.pop@liu.se>
Akira Tagoh <tagoh@redhat.com>
Alain Novak <alain.novak@hermes.si>
Alan Dosser <dosser@src.dec.com>
Alan J. Demers <ademers@cs.cornell.edu>
Aleksey Demakov <ademakov@gmail.com>
Alessandro Bruni <alessandro.bruni@gmail.com>
Alex Ronne Petersen <alexrp@xamarin.com>
Alexander Belchenko <bialix@ukr.net>
Alexander Gavrilov <angavrilov@gmail.com>
Alexander Herz <alexander.herz@mytum.de>
Alexandr Petrosian <paf@design.ru>
Alexandr Shadchin <ShadchinAV@mail.ru>
Alexandre Oliva <aoliva@redhat.com>
Alexis Laferriere <alexis.laf@xymus.net>
Alistair G. Crooks <agc@uts.amdahl.com>
Allan Hsu <allan@counterpop.net>
Andre Leiradella <andre@leiradella.com>
Andreas Jaeger <aj@suse.de>
Andreas Tobler <andreastt@gmail.com>
Andrei Polushin <polushin@gmail.com>
Andrej Cedilnik <acedil1@csee.umbc.edu>
Andrew Begel <abegel@eecs.berkeley.edu>
Andrew Buss <abuss@ucsd.edu>
Andrew Gray <andrew.gray@anu.edu.au>
Andrew Haley <aph@redhat.com>
Andrew Horton <andrew.j.horton@gmail.com>
Andrew McKinlay <mckinlay@axonsoft.com>
Andrew Pinski <pinskia@physics.uc.edu>
Andrew Stitcher <astitcher@redhat.com>
Andrew Stone <andrew@stone.com>
Andy Li <andy@onthewings.net>
Andy Wingo <wingo@pobox.com>
Anselm Baird-Smith <Anselm.BairdSmith@inria.fr>
Anthony Green <green@redhat.com>
Antoine de Maricourt
Ari Huttunen <Ari.Huttunen@hut.fi>
Arrigo Triulzi <arrigo@ic.ac.uk>
Ashley Bone <ashley.bone@nvl.army.mil>
Assar Westerlund <assar@sics.se>
Aurelien Larcher <aurelien.larcher@gmail.com>
Barry DeFreese <bdefreese@debian.org>
Baruch Siach <baruch@tkos.co.il>
Ben A. Mesander <ben@piglet.cr.usgs.gov>
Ben Cottrell <tamino@wolfhut.org>
Ben Hutchings <ben@decadentplace.org.uk>
Ben Maurer <benm@mono-cvs.ximian.com>
Benjamin Lerman <Benjamin.Lerman@ambre.net>
Bernd Edlinger <bernd.edlinger@hotmail.de>
Bernd Kuhls <bernd.kuhls@t-online.de>
Bernie Solomon <bernard@mono-cvs.ximian.com>
Bill Janssen <janssen@parc.xerox.com>
Bo Thorsen <bo@berlioz.suse.de>
Bradley D. LaRonde <brad@ltc.com>
Bradley Smith <brad@brad-smith.co.uk>
Brent Benson <brent@jade.ssd.csd.harris.com>
Brian Alliet <brian@brianweb.net>
Brian Beuning <bbeuning@corecard.com>
Brian Burton <bburton@users.sourceforge.net>
Brian D. Carlstrom <bdc@clark.lcs.mit.edu>
Brian F. Dennis <xjam@cork.cs.berkeley.edu>
Brian Lewis <btlewis@eng.sun.com>
Bruce Hoult <bruce@hoult.org>
Bruce Mitchener <bruce.mitchener@gmail.com>
Bruno Haible <bruno@clisp.org>
Bryce McKinlay <mckinlay@redhat.com>
Burkhard Linke <blinke@cebitec.uni-bielefeld.de>
Calvin Buckley <calvin@openmailbox.org>
Carlos J. Puga Medina <cpm@fbsd.es>
Cesar Eduardo Barros <cesarb@nitnet.com.br>
Charles Fiterman <cef@geode.geodesic.com>
Charles Mills <boson@cyberspace.org>
Chris Dodd <chrisd@reservoir.com>
Chris Lingard <chris@highludworth.freeserve.co.uk>
Chris Metcalf <cmetcalf@mellanox.com>
Christian Joensson <christian.joensson@gmail.com>
Christian Limpach <chris@pin.lu>
Christian Thalinger <twisti@complang.tuwien.ac.at>
Christoffe Raffali <christophe.raffalli@univ-savoie.fr>
Clay Spence <cds@peanut.sarnoff.com>
Colin LeMahieu <clemahieu@gmail.com>
Craig McDaniel <kreg7@bellsouth.net>
Dai Sato <satodai@dog.intcul.tohoku.ac.jp>
Dan Bonachea <bonachea@cs.berkeley.edu>
Dan Fandrich <dan@coneharvesters.com>
Dan Sullivan <sullivan@epa.gov>
Daniel R. Grayson <dan@math.uiuc.edu>
Danny Smith <danny_r_smith_2001@yahoo.co.nz>
Darrell Schiebel <drs@nrao.edu>
Dave Barrett <barrett@asgard.cs.colorado.edu>
Dave Detlefs <detlefs@src.dec.com>
Dave Korn <dave.korn.cygwin@googlemail.com>
Dave Love <d.love@dl.ac.uk>
David Ayers <d.ayers@inode.at>
David Brownlee <abs@absd.org>
David Butenhof <david.butenhof@hp.com>
David Chase <dr2chase@mac.com>
David Daney <ddaney@avtrex.com>
David Grove <groved@us.ibm.com>
David Leonard <leonard@users.sourceforge.net>
David Miller <davem@davemloft.net>
David Mossberger
David Peroutka <djp@volny.cz>
David Pickens <dsp@rci.rutgers.edu>
David Stes <stes@d5e02b1d.kabel.telenet.be>
David Terei <d@davidterei.com>
David Van Horn <dvanhorn@ccs.neu.edu>
Davide Angelocola <davide.angelocola@tiscali.it>
Dick Porter <dick@acm.org>
Dietmar Planitzer <dave.pl@ping.at>
Dimitris Vyzovitis <vyzo@media.mit.edu>
Dimitry Andric <dim@freebsd.org>
Djamel Magri <djamel.magri@googlemail.com>
Doug Kaufman <dkaufman@rahul.net>
Doug Moen <doug@moens.org>
Douglas Steel <doug@wg.icl.co.uk>
Eli Barzilay <eli@racket-lang.org>
Elijah Taylor <elijahtaylor@google.com>
Elvenlord Elrond <elrond@samba-tng.org>
Emmanual Stumpf
Eric Benson <eb@kaleida.com>
Eric Holk <eric.holk@gmail.com>
Erik M. Bray <erik.bray@lri.fr>
Fabian Thylman
Fergus Henderson <fjh@cs.mu.oz.au>
Franklin Chen <chen@adi.com>
Fred Gilham <gilham@csl.sri.com>
Fred Stearns
Friedrich Dominicus <friedrichdominicus@googlemail.com>
Gabor Drescher <gabor.drescher@cs.fau.de>
Gary Leavens <leavens@eecs.ucf.edu>
Geoff Norton <grompf@sublimeintervention.com>
George Talbot <Gtalbot@ansarisbio.com>
Gerard A Allan
Glauco Masotti <glauco.masotti@libero.it>
Grzegorz Jakacki <jakacki@acm.org>
Gustavo Giraldez <ggiraldez@manas.com.ar>
Gustavo Rodriguez-Rivera <grr@cs.purdue.edu>
H.J. Lu <hjl.tools@gmail.com>
Hamayama <hamay1010@gmail.com>
Hannes Mehnert <hannes@mehnert.org>
Hanno Boeck <hanno@gentoo.org>
Hans Boehm <boehm@acm.org>
Hans-Peter Nilsson <hp@axis.com>
Henning Makholm <Henning@octoshape.com>
Henrik Theiling <theiling@absint.com>
Hironori Sakamoto <hsaka@mth.biglobe.ne.jp>
Hiroshi Kawashima <kei@arch.sony.co.jp>
Hiroshi Yokota <yokota@netlab.cs.tsukuba.ac.jp>
Hubert Garavel <Hubert.Garavel@imag.fr>
Iain Sandoe <developer@sandoe-acoustics.co.uk>
Ian Piumarta <piumarta@prof.inria.fr>
Ian Searle <ians@eskimo.com>
Igor Khavkine <i_khavki@alcor.concordia.ca>
Ivan Demakov <ivan@tgrad.nsk.su>
Ivan Maidanski <ivmai@mail.ru>
Jaap Boender <jaapb@netbsd.org>
Jack Andrews <effbiae@gmail.com>
Jacob Navia <jacob.navia@jacob.remcomp.fr>
Jakub Jelinek <jakub@redhat.com>
James Clark <jjc@jclark.com>
James Dominy
Jan Alexander Steffens <jan.steffens@gmail.com>
Jan Wielemaker <J.Wielemaker@cs.vu.nl>
Jani Kajala <jani@sumea.com>
Jay Krell <jaykrell@microsoft.com>
Jean-Baptiste Nivois
Jean-Claude Beaudoin <jean.claude.beaudoin@gmail.com>
Jean-Daniel Fekete <fekete@cs.umd.edu>
Jeff Sturm <jsturm@one-point.com>
Jeffrey Hsu <hsu@soda.berkeley.edu>
Jeffrey Mark Siskind
Jeremy Fitzhardinge <jeremy@goop.org>
Jesper Peterson <jep@mtiame.mtia.oz.au>
Jesse Hull
Jesse Jones <jesjones@mindspring.com>
Jesse Rosenstock <jmr@ugcs.caltech.edu>
Ji-Yong Chung
Jie Liu <lj8175@gmail.com>
Jim Marshall <jim.marshall@wbemsolutions.com>
Jim Meyering <jim@meyering.net>
Joao Abecasis <joao@abecasis.name>
Joerg Sonnenberger <joerg@britannica.bec.de>
Johannes Schmidt <jschmidt@avtrex.com>
Johannes Totz <jtotz@ic.ac.uk>
John Bowman <bowman@ualberta.ca>
John Clements <clements@brinkerhoff.org>
John Ellis <ellis@xerox.parc.com>
John Merryweather Cooper <jmerry@mono-cvs.ximian.com>
Jon Moore <jonm@apache.org>
Jonathan Bachrach <jonathan@harlequin.com>
Jonathan Chambers <jonathan@unity3d.com>
Jonathan Clark
Jonathan Pryor <jpryor@novell.com>
Joshua Richardson <jric@chegg.com>
Juan Jose Garcia-Ripoll <juanjose.garciaripoll@googlemail.com>
Jukka Jylanki <jujjyl@gmail.com>
Kai Tietz <ktietz70@googlemail.com>
Kaz Kojima <kkojima@rr.iij4u.or.jp>
Kazu Hirata <kazu@codesourcery.com>
Kazuhiro Inaoka <inaoka.kazuhiro@renesas.com>
Keith Seitz <keiths@redhat.com>
Kenjiro Taura <tau@eidos.ic.i.u-tokyo.ac.jp>
Kenneth Schalk <schalk@cadtls.hlo.dec.com>
Kevin Kenny <kenny@m.cs.uiuc.edu>
Kevin Tew <tewk@racket-lang.org>
Kevin Warne <kevinw@direct.ca>
Kimura Wataru <kimuraw@i.nifty.jp>
Kjetil Matheussen <k.s.matheussen@notam02.no>
Klaus Treichel <ktreichel@web.de>
Klemens Zwischenbrugger <ka7@la-evento.com>
Knut Tvedten <knuttv@ifi.uio.no>
Krister Walfridsson <cato@df.lth.se>
Kristian Kristensen <kk@cs.aau.dk>
Kumar Srikantan
Kurt Miller <kurt@intricatesoftware.com>
Lars Farm <lars.farm@ite.mh.se>
Laurent Morichetti <l_m@pacbell.net>
Linas Vepstas <linasvepstas@gmail.com>
Loren J. Rittle <rittle@latour.labs.mot.com>
Louis Zhuang <louis.zhuang@acm.org>
Lucas Meijer <lucas@unity3d.com>
Ludovic Courtes <ludo@gnu.org>
Maarten Thibaut <mthibaut@cisco.com>
Manuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>
Manuel Serrano <serrano@cornas.inria.fr>
Marc Recht <recht@netbsd.org>
Marco Maggi <marco.maggi-ipsu@poste.it>
Marcos Dione <Marcos_David.Dione@sophia.inria.fr>
Marcus Herbert
Marek Vasut <marex@denx.de>
Margaret Fleck <mfleck@illinois.edu>
Mark Boulter <mboulter@vnet.ibm.com>
Mark Mitchell <mark@codesourcery.com>
Mark Reichert <markr@sirs.com>
Mark Sibly
Mark Weiser <weiser@ubiq.com>
Martin Hirzel <hirzel@cs.colorado.edu>
Martin Tauchmann <martintauchmann@bigfoot.com>
Matt Austern <austern@google.com>
Matthew Flatt <mflatt@plt-scheme.org>
Matthias Andree <matthias.andree@gmx.de>
Matthias Drochner <M.Drochner@fz-juelich.de>
Maurizio Vairani <maurizio.vairani@cloverinformatica.it>
Max Mouratov <mmouratov@gmail.com>
Melissa O'Neill <oneill@cs.sfu.ca>
Michael Arnoldus <chime@proinf.dk>
Michael Fox <mfox@cavium.com>
Michael Smith <msmith@spinnakernet.com>
Michael Spertus <mps@geodesic.com>
Michel Schinz <schinz@alphanet.ch>
Miguel de Icaza <miguel@gnome.org>
Mikael Djurfeldt <mikael@djurfeldt.com>
Mike Frysinger <vapier@gentoo.org>
Mike Gran <spk121@yahoo.com>
Mike McGaughey <mmcg@cs.monash.edu.au>
Mike Stump <mrs@windriver.com>
Mitch Harris <maharri@uiuc.edu>
Mohan Embar <gnustuff@thisiscool.com>
Naoyuki Sawa <sawa_naoyuki-1@yahoo.co.jp>
Nathanael Nerode <neroden@twcny.rr.com>
Neale Ferguson <neale@mono-cvs.ximian.com>
Neil Sharman <neil@cs.mu.oz.au>
Nicolas Cannasse <ncannasse@motion-twin.com>
Niibe Yutaka <gniibe@fsij.org>
Niklas Therning <niklas@therning.org>
Noah Lavine <noah.b.lavine@gmail.com>
Nobuyuki Hikichi <hikichi@sra.co.jp>
Oliver Kurth <oliver.kurth@innominate.com>
Ondrej Bilka <neleai@seznam.cz>
Paolo Molaro <lupus@ximian.com>
Parag Patel <parag@netcom.com>
Patrick Bridges <bridges@cs.arizona.edu>
Patrick C. Beard <beard@netscape.com>
Patrick Doyle <doylep@eecg.toronto.edu>
Paul Bone <paul@bone.id.au>
Paul Brook <paul@codesourcery.com>
Paul Graham
Paul Nash <paulnash@wildseed.com>
Per Bothner <per@bothner.com>
Peter Bigot <bigotp@acm.org>
Peter Chubb <peterc@sour.sw.oz.au>
Peter Colson <pcolson@connexus.net.au>
Peter Housel <housel@acm.org>
Peter Monks <pmonks@iname.com>
Peter Ross <pro@missioncriticalit.com>
Peter Seebach <seebs@taniemarie.solon.com>
Peter Wang <novalazy@gmail.com>
Petr Krajca <krajcap@inf.upol.cz>
Petr Salinger <Petr.Salinger@seznam.cz>
Petter Urkedal <paurkedal@gmail.com>
Philip Brown <phil@opencsw.org>
Philipp Tomsich <phil@complang.tuwien.ac.at>
Philippe Queinnec <queinnec@enseeiht.fr>
Phillip Musumeci <p.musumeci@ieee.org>
Phong Vo <kpv@research.att.com>
Pierre de Rop
Pontus Rydin <P.Rydin@astea.se>
Radek Polak <psonek2@seznam.cz>
Rainer Orth <ro@cebitec.uni-bielefeld.de>
Ranjit Mathew <rmathew@gcc.gnu.org>
Rauli Ruohonen <rruohone@cc.hut.fi>
Regis Cridlig <Regis.Cridlig@cl.cam.ac.uk>
Reimer Behrends <behrends@gmail.com>
Renaud Blanch <renaud.blanch@lri.fr>
Rene Girard
Rex Dieter <rdieter@math.unl.edu>
Reza Shahidi
Richard Earnshaw <rearnsha@arm.com>
Richard Henderson <rth@redhat.com>
Richard Sandiford <rsandifo@nildram.co.uk>
Rob Haack <rhaack@polaris.unm.edu>
Robert Brazile <brazile@diamond.bbn.com>
Rodrigo Kumpera <kumpera@gmail.com>
Roger Sayle <roger@eyesopen.com>
Roland McGrath <roland@redhat.com>
Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
Romain Naour <romain.naour@gmail.com>
Romano Paolo Tenca <rotenca@telvia.it>
Rutger Ovidius <ovidr@users.sourceforge.net>
Ryan Gonzalez <rymg19@gmail.com>
Ryan Murray <rmurray@debian.org>
Salvador Eduardo Tropea <salvador@inti.gov.ar>
Samuel Martin <s.martin49@gmail.com>
Samuel Thibault <samuel.thibault@gnu.org>
Scott Ananian <cananian@lesser-magoo.lcs.mit.edu>
Scott Schwartz <schwartz@groucho.cse.psu.edu>
Shawn Wagner <shawnw@speakeasy.org>
Shea Levy <shea@shealevy.com>
Shiro Kawai <shiro@lava.net>
Simon Gornall <simon@gornall.net>
Simon Posnjak <simon.posnjak@siol.net>
Slava Sysoltsev <Viatcheslav.Sysoltsev@h-d-gmbh.de>
Stefan Ring <stefanrin@gmail.com>
Stefano Rivera <stefano@rivera.za.net>
Sugioka Toshinobu <sugioka@itonet.co.jp>
Suzuki Toshiya <mpsuzuki@hiroshima-u.ac.jp>
Sven Hartrumpf <Sven.Hartrumpf@fernuni-hagen.de>
Sven Verdoolaege <skimo@kotnet.org>
Takis Psarogiannakopoulos <takis@xfree86.org>
Tatsuya Bizenn <bizenn@visha.org>
Tautvydas Zilys <tautvydas.zilys@gmail.com>
Terrell Russell <terrellrussell@gmail.com>
Thiemo Seufer <ths@networkno.de>
Thomas Funke <thf@zelator.in-berlin.de>
Thomas Klausner <tk@giga.or.at>
Thomas Linder Puls <thomas_linder_puls@hotmail.com>
Thomas Maier <Thomas.Maier@uni-kassel.de>
Thomas Schwinge <thomas@codesourcery.com>
Thorsten Glaser <tg@debian.org>
Tilman Vogel <Tilman.Vogel@web.de>
Tim Bingham <tjb@zko.dec.com>
Timothy N. Newsham <newsham@wiliki.eng.hawaii.edu>
Tom Tromey <tromey@cygnus.com>
Tommaso Tagliapietra <tommaso.tagliapietra@enel.it>
Toralf Foerster <toralf.foerster@gmx.de>
Toshio Endo <endo@is.titech.ac.jp>
Tsugutomo Enami <tsugutomo.enami@jp.sony.com>
Tum Nguyen <tum@veridicus.com>
Tyson Dowd <trd@cs.mu.oz.au>
Uchiyama Yasushi <uch@netbsd.org>
Ulrich Drepper <drepper@redhat.com>
Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Uros Bizjak <ubizjak@gmail.com>
Vernon Lee <scorpion@rice.edu>
Victor Ivrii <ivrii@math.toronto.edu>
Vitaly Magerya <vmagerya@gmail.com>
Vladimir Tsichevski <wowa@jet.msk.su>
Walter Bright <walter@walterbright.com>
Walter Underwood <wunder@hp-ses.sde.hp.com>
Wilson Ho <how@ivy.ucdavis.edu>
Wink Saville <wink@saville.com>
Xi Wang <xi.wang@gmail.com>
Xiaokun Zhu <xiaokun@aero.gla.ac.uk>
Yann Dirson <dirson@debian.org>
Yannis Bres <Yannis@bres.name>
Yuki Okumura <mjt@cltn.org>
Yusuke Suzuki <utatane.tea@gmail.com>
Yvan Roux <yvan.roux@linaro.org>
Zach Saw <zach.saw@gmail.com>
Zhiying Chen
Zhong Shao <zhong.shao@yale.edu>
Zoltan Varga <vargaz@gmail.com>