Joel E. Denny [Mon, 3 Jan 2011 14:00:09 +0000 (09:00 -0500)]
maint: don't update copyright years in bootstrap.
* .x-update-copyright: Add entry for bootstrap.
* bootstrap: Remove 2011 from copyright years. The bootstrap
version we're currently using comes from an older version of
gnulib.
* bootstrap.conf (bootstrap_sync): Add comments explaining this
issue.
(cherry picked from commit 355bdbdc723fe79beb6a8aeb04b516eac64c3ec8)
Joel E. Denny [Sun, 2 Jan 2011 13:17:44 +0000 (08:17 -0500)]
maint: prepare to use date ranges in copyright notices.
* README (Copyright statements): New section explaining the range
notation. The GNU coding standards require this explanation. I
copied ours from coreutils.
* build-aux/update-b4-copyright: Revert 2010-06-17 changes that
disabled Bison's automated use of ranges.
* cfg.mk (update-copyright-env): Likewise.
(cherry picked from commit cb3f7f335aa69ba3e6478fea8d4591f4f6d43bc5)
Joel E. Denny [Mon, 20 Dec 2010 03:14:08 +0000 (22:14 -0500)]
doc: cleanup.
* NEWS (2.5): Make some minor improvements to wording, and format
entries more consistently.
* doc/bison.texinfo (Language and Grammar): Point out that IELR
and canonical LR are experimental features.
(Decl Summary): In list of %define variables, make wording more
consistent. Improve discussion of using LALR for GLR.
(cherry picked from commit f1b238df182101b9c9d3808bf2d5e2333e27c50f)
Joel E. Denny [Mon, 20 Dec 2010 03:12:32 +0000 (22:12 -0500)]
parse.lac: document.
* NEWS (2.5): Add entry for LAC, and mention LAC in entry for
other corrections to verbose syntax error messages.
* doc/bison.texinfo (Decl Summary): Rewrite entries for
lr.default-reductions and lr.type to be clearer, to mention
%nonassoc's effect on canonical LR, and to mention LAC. Add entry
for parse.lac.
(Glossary): Add entry for LAC.
(cherry picked from commit fcf834f9ecf080784b741782f4206df1e1a2957a)
* data/yacc.c: Rename %define variable parse.lac.es-capacity to
parse.lac.es-capacity-initial. Accept parse.lac.memory-trace
with values of "failures" (default) or "full".
(b4_declare_parser_state_variables): Add yyesa, yyes, and
yyes_capacity variables.
(YYSTACK_USE_ALLOCA): Ignore it if LAC requested.
(YYSTACK_ALLOC, YYSTACK_FREE, YYSTACK_ALLOC_MAXIMUM): Define if
LAC requested.
(YYCOPY_NEEDED): New cpp macro.
(YYCOPY): Define if LAC requested.
(yy_lac_stack_realloc): New function implementing stack
reallocations. Use YYMAXDEPTH for maximum stack size given that
the stack should never need to grow larger than the main state
stack needs to grow without LAC.
(YY_LAC_ESTABLISH): Update yy_lac invocation.
(yy_lac): Add arguments for exploratory stack memory data
recorded in the main parser. Invoke yy_lac_stack_realloc when
reallocation is necessary.
(yysyntax_error): Add the same new arguments and pass them to
yy_lac.
(yypstate_delete): Free yyes if necessary.
(yyesa, yyes, yyes_capacity): #define these to yypstate members
in the case of push parsing.
(yyparse, yypush_parse): Initialize yyes and yyes_capacity.
Update yysyntax_error invocations. At yyreturn, free yyes if
necessary.
* src/parse-gram.y: %define parse.lac full.
* tests/input.at (LAC: errors for %define): Extend for
parse.lac-memory-trace.
* tests/regression.at (LAC: Exploratory stack): Extend to check
that stack reallocs happen when expected.
(LAC: Memory exhaustion): Update to use YYMAXDEPTH and
parse.lac.es-capacity-initial.
(cherry picked from commit 107844a3eea478e1d61551e47a88ed73374724c9)
Joel E. Denny [Sat, 11 Dec 2010 16:13:33 +0000 (11:13 -0500)]
parse.lac: implement as %define variable.
LAC = lookahead correction. See discussion at
<http://lists.gnu.org/archive/html/bison-patches/2009-09/msg00034.html>.
However, one point there must be corrected: because of %nonassoc,
LAC is *not* always redundant for lr.type=canonical-lr.
* data/yacc.c: Accept values of "none" (default) or "full" for
parse.lac. Accept %define parse.lac.es-capacity to specify
capacity of LAC's temporary exploratory stack. It defaults to 20
and, for now, will not grow dynamically.
(b4_lac_flag, b4_lac_if): New m4 macros. Evaluate as true for
parse.lac!=none.
(YYBACKUP): Invoke YY_LAC_DISCARD.
(YY_LAC_ESTABLISH, YY_LAC_DISCARD): New cpp macros that invoke
yy_lac and track when it needs to be invoked
(yy_lac): New function that, given the current stack, determines
whether a token can eventually be shifted. Return status mimics
yyparse return status.
(yysyntax_error): Change yystate argument to yyssp so stack top
can be passed to yy_lac. If LAC is requested, build expected
token list by invoking yy_lac for every token instead of just
checking the current state for lookaheads. Return 2 if yy_lac
exhausts memory.
(yyparse, yypush_parse): Use local variable yy_lac_established and
cpp macros YY_LAC_ESTABLISH and YY_LAC_DISCARD to implement LAC.
Update yysyntax_error invocation. Add yyexhaustedlab code if LAC
is requested.
* tests/conflicts.at (%nonassoc and eof): Extend to check the
effect of each of -Dlr.type=canonical-lr and -Dparse.lac=full.
(%error-verbose and consistent errors): Likewise.
(LAC: %nonassoc requires splitting canonical LR states): New test
group demonstrating how LAC can fix canonical LR.
* tests/input.at (LAC: Errors for %define): New test group.
* tests/regression.at (LAC: Exploratory stack): New test group.
(LAC: Memory exhaustion): New test group.
(cherry picked from commit bf35c71c5827d735c125ee25b048eabf40960a55)
Joel E. Denny [Sun, 21 Nov 2010 15:07:13 +0000 (10:07 -0500)]
build: use gnulib's new bootstrap_sync option.
Now, whenever we update bison's copy of gnulib, bootstrap will
update itself the next time it's run.
* bootstrap: Copy from latest gnulib for bootstrap_sync support.
* bootstrap.conf (bootstrap_sync): Set to true.
* gnulib: Update to latest so bootstrap is in sync now.
(cherry picked from commit 10bae98af27edbb84a06d82a20a63ad7a0cca688)
Joel E. Denny [Sun, 7 Nov 2010 21:10:09 +0000 (16:10 -0500)]
yysyntax_error: adjust prior fixes for branch-2.5's lalr1.cc.
On master, there is no yychar in lalr1.cc, but there is on
branch-2.5, and the prior cherry-pick of "Fix handling of yychar
manipulation in user semantic actions" wasn't adjusted for that
difference.
* data/lalr1.cc (yy::parser::parse): Translate yychar before
every use of yytoken, and add comments explaining this approach.
* tests/conflicts.at (%error-verbose and consistent errors):
Extend to test yychar manipulation with lalr1.cc.
Joel E. Denny [Sun, 7 Nov 2010 21:01:56 +0000 (16:01 -0500)]
yysyntax_error: fix for consistent error with lookahead.
* NEWS (2.5): Document.
* data/yacc.c (yysyntax_error): In a verbose syntax error
message while in a consistent state with a default action (which
must be an error action given that yysyntax_error is being
invoked), continue to drop the expected token list, but don't
drop the unexpected token unless there actually is no lookahead.
Moreover, handle that internally instead of returning 1 to tell
the caller to do it. With that meaning of 1 gone, renumber
return codes more usefully.
(yyparse, yypush_parse): Update yysyntax_error usage. Most
importantly, set yytoken to YYEMPTY when there's no lookahead.
* data/glr.c (yyreportSyntaxError): As in yacc.c, don't drop the
unexpected token unless there actually is no lookahead.
* data/lalr1.cc (yy::parser::parse): If there's no lookahead,
set yytoken to yyempty_ before invoking yysyntax_error_.
(yy::parser::yysyntax_error_): Again, don't drop the unexpected
token unless there actually is no lookahead.
* data/lalr1.java (YYParser::parse): If there's no lookahead,
set yytoken to yyempty_ before invoking yysyntax_error.
(YYParser::yysyntax_error): Again, don't drop the unexpected
token unless there actually is no lookahead.
* tests/conflicts.at (%error-verbose and consistent
errors): Extend test group to further reveal how the previous
use of the simple "syntax error" message was too general. Test
yacc.c, glr.c, lalr1.cc, and lalr1.java. No longer an expected
failure.
* tests/java.at (AT_JAVA_COMPILE, AT_JAVA_PARSER_CHECK): Move
to...
* tests/local.at: ... here.
(_AT_BISON_OPTION_PUSHDEFS): Push AT_SKEL_JAVA_IF definition.
(AT_BISON_OPTION_POPDEFS): Pop it.
(AT_FULL_COMPILE): Extend to handle Java.
(cherry picked from commit d2060f0634f4adfb5db74cce540a9d27806091fe)
Joel E. Denny [Sun, 7 Nov 2010 14:44:07 +0000 (09:44 -0500)]
yysyntax_error: prepare for readability of next patches.
These are purely whitespace changes that result in ugly code
but that make the next couple of patches much easier to read.
* data/glr.c (yyreportSyntaxError): Reindent.
* data/lalr1.cc (yy::parser::yysyntax_error_): Reindent.
* data/lalr1.java (YYParser::yysyntax_error): Reindent.
* data/yacc.c (yysyntax_error): Reindent.
(cherry picked from commit b4bbc4a03c6f4799a4442c912b71a28c3a986e54)
Joel E. Denny [Sun, 31 Oct 2010 22:56:34 +0000 (18:56 -0400)]
yysyntax_error: improve invocation readability.
* data/yacc.c (yyparse, yypush_parse): For yysyntax_error
invocation, get rid of the while loop, which is misleading
because there are really at most two iterations.
(cherry picked from commit 34db451c379888fa593268b65518ad191bef21f5)
Joel E. Denny [Sun, 17 Oct 2010 14:18:26 +0000 (10:18 -0400)]
maint: re-anchor all .gitignore entries.
* bootstrap: Copy from gnulib's latest for the fix to
automatically anchor entries it constructs.
* gnulib: Update to latest just so it has the same bootstrap.
* .gitignore, build-aux/.gitignore, doc/.gitignore:
* lib/.gitignore, m4/.gitignore, po/.gitignore:
* runtime-po/.gitignore: Re-anchor all entries.
(cherry picked from commit e503b9cbbebde5e0ecccdcc864969b9a609b940d)
Paul Eggert [Fri, 8 Oct 2010 19:12:48 +0000 (12:12 -0700)]
Fix portability problem on OpenBSD 4.7.
Jim Meyering reported this in
<http://lists.gnu.org/archive/html/bug-bison/2010-10/msg00007.html>.
* data/yacc.c: Use EXIT_SUCCESS as a witness for stdlib.h,
not _STDLIB_H. EXIT_SUCCESS has been defined by the standard
for quite some time.
* src/parse-gram.c, src/parse-gram.h: Regenerate.
* tests/regression.at: Tamper with the renamed witness.
(cherry picked from commit 8ff146cd31d887f9bb28ec5f96bffcad4b4057f7)
Paul Eggert [Fri, 8 Oct 2010 18:10:06 +0000 (11:10 -0700)]
Adjust to recent changes to gnulib bootstrap.
* .cvsignore, build-aux/.cvsignore, doc/.cvsignore, etc/.cvsignore:
* examples/calc++/.cvsignore, lib/.cvsignore, m4/.cvsignore:
* po/.cvsignore, runtime-po/.cvsignore, src/.cvsignore:
* tests/.cvsignore: Remove; I don't use CVS to maintain Bison
anymore and don't know of anybody else who does. If someone needs
these files, they can resurrect them.
* .gitignore, build-aux/.gitignore, doc/.gitignore, lib/.gitignore:
* m4/.gitignore, po/.gitignore, runtime-po/.gitignore:
Omit leading '/', since bootstrap omits it.
Adjust file names to match current contents better.
* bootstrap: Sync from gnulib: this contains the new gnulib_mk_hook
installed just for us.
* bootstrap.conf (excluded_files): Don't exclude codeset.m4,
glibc21.m4, inttypes_h.m4, size_max.m4, xsize.m4, as they are now
needed somehow. Don't have time to look into why.
(gnulib_modules): Change malloc to malloc-gnu. Do we really assume
the GNU malloc behavior, where malloc (0) != NULL unless we're
out of storage? If not, we can omit malloc-gnu; but for now I left
it in to be safe.
(vc_ignore): Remove.
* README-hacking: Renamed from HACKING, since gnulib bootstrap now
uses that convention.
(cherry picked from commit 95aed8db15a0bb0f7819bf77586d0cf6812ffdfd)
Joel E. Denny [Thu, 5 Aug 2010 01:15:59 +0000 (21:15 -0400)]
maint: add gettext version to release announcements.
Suggested by Paul Hilfinger at
<http://lists.gnu.org/archive/html/bison-patches/2010-07/msg00019.html>
<http://lists.gnu.org/archive/html/bison-patches/2010-08/msg00002.html>.
* cfg.mk (bootstrap-tools): Add gettext.
(cherry picked from commit b3b18068885986d25ec2c8f76a7d2b971194598a)
Joel E. Denny [Thu, 5 Aug 2010 00:17:40 +0000 (20:17 -0400)]
doc: fix -W and %expect documentation some.
* NEWS (2.4.3): Mention that there are documentation fixes.
* doc/bison.texinfo (Expect Decl): Make it clear that %expect
turns conflicts into errors not warnings.
(Shift/Reduce): Likewise.
(Bison Options): Don't mention -Wsyntax. It doesn't exist.
(cherry picked from commit 3ffdd5f1254fd9403a5a1d31dbdc5b2756c22775)
Joel E. Denny [Sun, 1 Aug 2010 22:51:46 +0000 (18:51 -0400)]
-Werror: fix for rules useless in parser after conflicts.
* NEWS (2.4.3): Document fix.
* src/complain.c (error_message): Extend to handle incomplete
error messages so warn and warn_at can be used in more cases.
* src/gram.c (grammar_rules_useless_report): Use warn_at so that
-Werror is always obeyed.
* src/reduce.c (reduce_print): Use warn so that the "warnings
being treated as errors" message is printed consistently before
the first warning message. This makes testing easier.
* tests/local.at (AT_BISON_WERROR_MSG): New macro.
(AT_BISON_CHECK_NO_XML): Extend to check -Werror and
--warnings=error when warnings appear in bison's stderr.
(cherry picked from commit 954474bfa1a875eeefe9aa1989d9c7be6f64726b)
Joel E. Denny [Fri, 30 Jul 2010 02:05:09 +0000 (22:05 -0400)]
maint: enable gnits only at stable releases.
* configure.ac (AM_INIT_AUTOMAKE): Underscore or dash in a
version string should disable gnits. Explain in comments.
(cherry picked from commit 122ff4442985540837fae4b4c904c7018a1a3d38)
Joel E. Denny [Sat, 24 Jul 2010 20:30:07 +0000 (16:30 -0400)]
tests: handle Valgrind that complains about >&-.
* tests/output.at (AT_CHECK_OUTPUT): Extend to accept pre-tests.
(Output files: -dv >&-): Skip test group if running
maintainer-check-valgrind.
(cherry picked from commit c027cccb351b7b553f92a827787fa91d28934e5c)
Akim Demaille [Wed, 23 Jun 2010 12:49:40 +0000 (14:49 +0200)]
Update from GFDL GFDL 1.2 to 1.3.
* doc/bison.texinfo: Update GFDL version number.
* doc/fdl.texi: Update to version 1.3, taken from:
http://www.gnu.org/licenses/fdl.texi
(cherry picked from commit 804e83b26daa5c1c2cd84195faf114cc531b876b)
Akim Demaille [Wed, 12 May 2010 09:12:24 +0000 (11:12 +0200)]
lalrl1.cc: give a chance to user defined YYLLOC_DEFAULT.
* data/lalr1.cc (YYLLOC_DEFAULT): Move its definition from the
header file to the implementation file, after the user %code
sections.
* NEWS: Document it.
Akim Demaille [Wed, 12 May 2010 05:27:13 +0000 (07:27 +0200)]
c++: use YYRHSLOC.
* data/lalr1.cc (YYRHSLOC): New.
(YYLLOC_DEFAULT): Use it.
* data/glr.cc: If location_type was user defined, do not include
location.hh, and do not produce location.hh and position.hh.
* tests/calc.at (YYLLOC_DEFAULT): Use YYRHSLOC.
Check that glr.cc supports user defined location_type.
* NEWS: Document this.
(cherry picked from commit bb9191dd311e4c6d80f8dd12c6a7ce9254404fbc)
Akim Demaille [Sun, 9 May 2010 12:29:35 +0000 (14:29 +0200)]
lalr1.cc: don't generate location.hh when location_type is defined
* data/bison.m4 (b4_percent_define_use): New.
(b4_percent_define_get): Use it.
Accept a default value.
* data/c++.m4: Do not provide a default value for the %define
variable location_type, rather, use b4_percent_define_get with a
default argument where its value is needed.
* data/lalr1.cc: Do not load location.cc (which outputs both
location.hh and position.hh) if the user defined location_type.
Do not include location.hh either.
* data/glr.cc: Likewise.
lalr1.cc: location_type: make sure we don't depend on loc.(begin|end).
* tests/calc.at (Span): Instead of begin/end, as in the built-in
location class, use first and last.
Define YYLLOC_DEFAULT to adjust to these changes.
* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Adjust to the
location_type changes.
Joel E. Denny [Fri, 30 Apr 2010 23:50:52 +0000 (19:50 -0400)]
tests: fix maintainer-xml-check.
* data/xslt/xml2dot.xsl (xsl:template match="bison-xml-report"):
Update output to include comments now produced by --graph.
(xsl:template match="automaton"): As for --graph, name the
digraph after the grammar file.
* src/print-xml.c (escape_bufs): Enlarge array.
(print_xml): Add bug-report and url attributes to
bison-xml-report element.
(cherry picked from commit bc81de36b7ef78ff280e14a173e5cc5d5a3191eb)
Joel E. Denny [Fri, 30 Apr 2010 23:50:34 +0000 (19:50 -0400)]
In DOT output, convert from "/*" comments to "//" comments.
This handles the possibility that a "*/" might appear in
variable portions of those comments at some point in the future.
* src/graphviz.c (start_graph): Implement.
(cherry picked from commit b7666378f5cb5e9587d3c918f0cdcaf6f8aca5c7)
Joel E. Denny [Fri, 30 Apr 2010 18:41:07 +0000 (14:41 -0400)]
Revert 2009-12-30 change for undefined %prec token complaints.
That is, keep them as warnings because that should be sufficient
to satisfy POSIX without creating backward compatibility issues.
Suggested by Richard Stallman at
<http://lists.gnu.org/archive/html/bison-patches/2010-03/msg00033.html>.
* NEWS (2.5): Remove mention of complaint.
* src/reader.c (grammar_rule_check): Convert warning back to
complaint.
* tests/input.at (%prec's token must be defined): Update.
(cherry picked from commit 02354690ee02dfa05564137aafc6721eb54d21ab)
Joel E. Denny [Sun, 25 Apr 2010 21:44:43 +0000 (17:44 -0400)]
build: don't require src/bison during bootstrap.
Suggested by Eric Blake at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00003.html>.
* bootstrap.conf (bootstrap_epilogue): New function to make sure
src/parse-gram.[ch] are stamped later than src/parse-gram.y.
(cherry picked from commit b733bcd00e6fc8db45c86dc289938a28c1bf72d8)
Joel E. Denny [Sun, 25 Apr 2010 21:05:18 +0000 (17:05 -0400)]
i18n: fix untranslatable string.
Reported by Goran Uddeborg at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00000.html>.
* src/muscle-tab.c (muscle_percent_define_insert): Here.
* tests/local.at (AT_LOC_PUSHDEF, AT_LOC_POPDEF): New.
(_AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Use them to
define the appropriate AT_LOC accessors.
* tests/calc.at: Use AT_LOC accessors.
* tests/local.at (_AT_BISON_OPTION_PUSHDEFS):
Define AT_LOCATION_TYPE_IF.
(_AT_BISON_OPTION_POPDEFS): Undefine AT_LOCATION_TYPE_IF.
* tests/calc.at (_AT_DATA_CALC_Y): When %define location_type is
used, provide a user location type and use it.
(Simple LALR1 C++ Calculator): Add a test case for location_type.
* tests/calc.at: Use yy::parser::location_type rather than
yy::location, since the former is always right, and might point to
another type than the latter.
* data/lalr1.cc: Include location.hh before stack.hh.
Remove the useless forward declarations of position and location.
Reported by Chris Morley.
* data/glr.cc: Likewise.
Joel E. Denny [Sat, 10 Apr 2010 21:37:27 +0000 (17:37 -0400)]
tests: fix for newer Sun Studio C++.
Reported by Dagobert Michelsen at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00023.html>.
* THANKS (Dagobert Michelsen): Add.
* configure.ac (AC_PREREQ): Set to 2.64 so we get the latest
Autoconf macro for handling the restrict keyword.
* gnulib: Update to latest, which no longer overrides that macro
from Autoconf.
(cherry picked from commit 4333ba11c65f428040d54820b6d4c6aa663944d2)
Joel E. Denny [Sat, 3 Apr 2010 18:58:22 +0000 (14:58 -0400)]
portability: fix pointer arithmetic to conform to C standard.
Reported by Tys Lefering at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00035.html>.
This fix is already implemented in glr.c and does not apply to
lalr1.java.
* data/lalr1.cc (yy::parser::parse): Increase size of
yyerror_range and adjust subscripting so you don't have to
subtract one from the beginning of the array.
* data/yacc.c (b4_declare_parser_state_variables,
yyparse, yypush_parse): Likewise.
(cherry picked from commit 48f4100a8299918a3abc9c5d29db85319cad3cee)
Akim Demaille [Thu, 25 Mar 2010 16:02:38 +0000 (17:02 +0100)]
tests: fix 250: parse.error=verbose overflow.
* tests/regression.at (parse.error=verbose overflow): Avoid the
double inclusion of stdlib.h as it triggers hard errors.
(cherry picked from commit d6b347e43324926f750b22709e2c5262f60fa991)
Joel E. Denny [Wed, 24 Mar 2010 00:21:59 +0000 (20:21 -0400)]
portability: fix for BSD make.
Reported by Johan van Selst at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00016.html>.
* tests/Makefile.am ($(TESTSUITE)): Qualify package.m4 in
this dependency list as in package.m4's target rule.
(cherry picked from commit cf80e9c3868b4a6a9caf53c3b281ee089deffc86)
Joel E. Denny [Tue, 23 Mar 2010 15:07:46 +0000 (11:07 -0400)]
portability: fix spawning on at least FreeBSD 8 and FreeBSD 9.
Reported by Johan van Selst at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00014.html>.
* NEWS (2.4.3): New.
* THANKS (Johan van Selst): Add.
* gnulib: Update to latest.
(cherry picked from commit 311b2e56eaad952fc7908336e3aeb019dd8bf1ee)
Joel E. Denny [Sat, 20 Mar 2010 17:10:09 +0000 (13:10 -0400)]
Version 2.4.2.
* NEWS (2.4.2): Set version and date. For the recent test suite
portability fixes, don't be so optimistic about their success
given the lack of feedback on the affected platforms.
(cherry picked from commit 08090fe64c2956a4211fb5f6fd40762fe1f198b5)
Joel E. Denny [Tue, 23 Feb 2010 02:52:39 +0000 (21:52 -0500)]
tests: fix maintainer-xml-check for recent changes.
* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): Use
AT_BISON_CHECK_NO_XML rather than AT_BISON_CHECK because an
output file whose name conflicts with a previous output file
is now never generated.
(cherry picked from commit a3d760ef5d7d9bcab78268f5117c39566aa0345c)
Joel E. Denny [Mon, 22 Feb 2010 23:09:19 +0000 (18:09 -0500)]
portability: fix several issues with M4 subprocess.
M4's output pipe was not being drained upon fatal errors during
scan_skel. As a result, broken-pipe messages from M4 were seen
on at least AIX, HP-UX, Solaris, and RHEL4, and this caused a
failure in the test suite. The problem was that, on platforms
where the default disposition for SIGPIPE is ignore instead of
terminate, M4 sometimes saw fwrite fail with errno=EPIPE and
then reported it. However, there's some sort of race condition,
because the new test group occasionally succeeded.
Reported by Albert Chin at
<http://lists.gnu.org/archive/html/bug-bison/2010-02/msg00004.html>.
There were also problems with the test suite livelocking on
Tru64 5.1b. Reported by Didier Godefroy at
<http://lists.gnu.org/archive/html/bug-bison/2009-05/msg00005.html>.
Switching to create_pipe_bidi suggested by Akim Demaille.
To attempt to solve both of these problems, switch to gnulib's
create_pipe_bidi and register M4 process as a slave. Along the
way, clean up file name conflict handling, which was affected by
the broken-pipe problem before the switch.
* NEWS (2.4.2): Document.
* THANKS (Didier Godefroy): Add.
* bootstrap.conf (gnulib_modules): Add pipe.
* gnulib: Update to latest to make sure we have all the latest
fixes.
* lib/Makefile.am (libbison_a_SOURCES): Remove subpipe.h and
subpipe.c.
* po/POTFILES.in (lib/subpipe.c): Remove.
* src/files.c (compute_output_file_names): Update invocations
of output_file_name_check.
(output_file_name_check): In the case that the grammar file
would be overwritten, use complain instead of fatal, but replace
the output file name with /dev/null. Use the /dev/null solution
for the case of two conflicting output files as well because it
seems safer in case Bison one day tries to open both files at
the same time.
* src/files.h (output_file_name_check): Update prototype.
* src/output.c (output_skeleton): Use create_pipe_bidi and
wait_subprocess. Assert that scan_skel completely drains the
pipe.
* src/scan-skel.l (at_directive_perform): Update
output_file_name_check invocation.
* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): Check that the
grammar file actually isn't overwritten.
(Conflicting output files: -o foo.y): Update expected output.
* tests/skeletons.at (Fatal errors but M4 continues producing
output): New test group.
(cherry picked from commit 22cc8d813ee57c9631e527a31010ab138f9b7e06)
Joel E. Denny [Thu, 21 Jan 2010 17:18:45 +0000 (12:18 -0500)]
maint: automate PACKAGE_COPYRIGHT_YEAR update, and update it.
* HACKING (Release Procedure): Update notes on copyright years.
* Makefile.am (update-package-copyright-year): New target rule.
* build-aux/update-package-copyright-year: New file.
* cfg.mk (update-copyright): Add update-package-copyright-year
as a dependency.
(cherry picked from commit af8a609a90c48d1a7e6ea9e31dba4fbad6c7fbed)
Joel E. Denny [Mon, 4 Jan 2010 19:13:43 +0000 (14:13 -0500)]
Fix some comments concerning LR(0) versus LALR(1).
Stop equating LR(0) with nondeterminism and LALR(1) with
determinism. That is, if all states are consistent, then LR(0)
tables are deterministic. On the other hand, LALR(1) tables
might be nondeterministic before conflict resolution, and GLR
permits LALR(1) tables to remain nondeterministic.
* src/LR0.c, src/LR0.h: Here.
* src/lalr.c, src/lalr.h: Here.
* src/main.c (main): Here.
* src/state.c, src/state.h: Here.
* src/ielr.h (ielr): In preconditions, expect LR(0) not LALR(1)
parser tables.
Joel E. Denny [Wed, 30 Dec 2009 08:20:11 +0000 (03:20 -0500)]
POSIX: warn if %prec's token was not defined.
Reported by Florian Krohm at
<http://lists.gnu.org/archive/html/bug-bison/2009-12/msg00005.html>.
* NEWS (2.4.2): Document.
* src/reader.c (grammar_rule_check): Implement.
(grammar_current_rule_prec_set): Add comments explaining that we
here assume a %prec identifier is a token, but we still manage
to support POSIX.
* tests/input.at (%prec's token must be defined): New test
group.
(cherry picked from commit f1ceed07743630aa2aef7c77d8bde23c3794ee1b)
Akim Demaille [Thu, 11 Dec 2008 08:37:40 +0000 (09:37 +0100)]
Propagate i18n changes into glr.c.
* data/glr.c (yyreportSyntaxError): Use "switch" instead of
building the error message format dynamically.
* data/lalr1.java: Formatting changes.
(cherry picked from commit 2b008529edd233bac07a58d557869ae902be1818)
Akim Demaille [Thu, 21 Aug 2008 19:46:13 +0000 (21:46 +0200)]
Support i18n of the parse error messages.
* TODO (lalr1.cc/I18n): Remove.
* data/lalr1.cc (yysyntax_error_): Support the translation of the
error messages, as done in yacc.c.
Stay within the yy* pseudo namespace.
(cherry picked from commit a0ffc1751e712e55b27aa7349ec7db302557476b)
Joel E. Denny [Tue, 22 Dec 2009 20:44:29 +0000 (15:44 -0500)]
Port small part of master's 8901f32e so future ports are easier.
* data/lalr1.cc (yy::parser::yysyntax_error_): Always add second
argument, but name it in the function definition only when
verbose error messages are enabled and it'll thus be used.
(yy::parser::parse): Update use of yysyntax_error_.
Joel E. Denny [Tue, 29 Dec 2009 17:43:26 +0000 (12:43 -0500)]
portability: `<' and `>' are not always defined on addresses.
Specifically, don't sort objects by their memory addresses when
they're not allocated in the same array or other object. Though
I haven't found a test case where that fails on my platform, C
says the behavior is undefined.
* src/AnnotationList.c (AnnotationList__insertInto): Remove
FIXME. Use new id field of InadequacyList nodes rather than
their memory addresses when sorting.
(AnnotationList__compute_from_inadequacies): Add
inadequacy_list_node_count argument to pass to
InadequacyList__new_conflict.
* src/AnnotationList.h
(AnnotationList__compute_from_inadequacies): Update prototype
and documentation for new argument.
* src/InadequacyList.c (InadequacyList__new_conflict): Add
node_count argument and use it to assign a unique ID.
* src/InadequacyList.h (InadequacyListNodeCount): New typedef.
(InadequacyList): Add id field.
(InadequacyList__new_conflict): Update prototype and
documentation for new argument.
* src/ielr.c (ielr_compute_annotation_lists): Update
AnnotationList__compute_from_inadequacies invocation.
Joel E. Denny [Sun, 20 Dec 2009 07:22:53 +0000 (02:22 -0500)]
Fix handling of yychar manipulation in user semantic actions.
The problem was that yacc.c didn't always update the yychar
translation afterwards. However, other skeletons appear to be
fine. glr.c appears to already translate yychar before every
use. lalr1.cc does not define yychar and does not document its
replacement, yyla, for users. It does provide yyclearin, but
that does not manipulate yyla and thus requires no translation
update. In lalr1.java, yychar is out of scope during semantic
actions.
* NEWS (2.5): Document.
* data/yacc.c (YYBACKUP): Don't bother translating yychar into
yytoken here.
(yyparse, yypush_parse): Instead, translate before every use of
yytoken, and add comments explaining this approach.
* tests/actions.at (Destroying lookahead assigned by semantic
action): New test group checking that translation happens before
lookahead destructor calls at parser return. Previously,
incorrect destructors were called.
* tests/conflicts.at (%error-verbose and consistent
errors): New test group checking that translation happens at
syntax error detection before the associated verbose error
message and the associated lookahead destructor calls. While
the destructor call is fixed by this patch, the verbose error
message is currently incorrect due to another bug (see
comments in test group), so this is an expected failure for now.
(cherry picked from commit df222dfaf4da6becae8665d344669eefc705d7f7)
Joel E. Denny [Mon, 21 Dec 2009 19:58:48 +0000 (14:58 -0500)]
YYFAIL: warn about uses and remove from lalr1.java.
* NEWS (2.5): Document.
* data/lalr1.java (parser::YYStack::YYFAIL): Rename to YYERRLAB,
and make it private. Update all uses.
* src/scan-code.l (SC_RULE_ACTION): Implement warning.
(cherry picked from commit 4395a9ff4fd518580b9abe9482783e8eba192f34)
Joel E. Denny [Thu, 17 Dec 2009 06:09:09 +0000 (01:09 -0500)]
Code cleanup.
* src/symtab.c, src/symtab.h (symbol_class_get_string): Remove
function, which is no longer used.
(cherry picked from commit 387b4d504728391605f751e74a36fb7d0d441b19)
Joel E. Denny [Wed, 16 Dec 2009 18:19:19 +0000 (13:19 -0500)]
Add gcc's -Wundef to test suite and fix another warning from it.
* NEWS (2.4.2): Update description of -Wundef fix.
* configure.ac (WARN_CXXFLAGS_TEST): New substitution.
(WARN_CFLAGS_TEST): New substitution.
* data/glr.c: Avoid warning about __STRICT_ANSI__.
* tests/atlocal.in (CFLAGS): Use WARN_CFLAGS_TEST instead of
WARN_CFLAGS.
(NO_WERROR_CFLAGS): Likewise.
(CXXFLAGS): Use WARN_CXXFLAGS_TEST instead of WARN_CXXFLAGS.
(cherry picked from commit a603c6e0bb8b9e79d4136ee0fd0d1bf6a7d010ef)
Jonathan Nieder [Wed, 16 Dec 2009 04:07:46 +0000 (22:07 -0600)]
Simplify y.tab.c when location tracking is disabled.
* data/yacc.c: Do not check YYLTYPE_IS_TRIVIAL if location
tracking is not enabled. Instead, unconditionally define
YY_LOCATION_PRINT as a no-op for backward compatibility.
(cherry picked from commit fcd32abd3a4b68ef525d7766dbed1c98465e23b9)
Jonathan Nieder [Wed, 16 Dec 2009 04:03:18 +0000 (22:03 -0600)]
Avoid warnings from gcc -Wundef y.tab.c.
* data/glr.c: Check if YYENABLE_NLS and YYLTYPE_IS_TRIVIAL are
defined before using them.
* data/lalr1.cc: Likewise.
* data/yacc.c: Likewise.
(cherry picked from commit ae93128c9671b58bdc2b557c382ecd84e659ab52)
Joel E. Denny [Tue, 15 Dec 2009 05:15:41 +0000 (00:15 -0500)]
portability: use -DGNULIB_POSIXCHECK.
Reported by Eric Blake. See discussions at
<http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00008.html>
and
<http://lists.gnu.org/archive/html/bug-gnulib/2009-10/msg00108.html>.
* HACKING (Release checks): Suggest -DGNULIB_POSIXCHECK.
* bootstrap.conf (gnulib_modules): Add all the printf modules
suggested by -DGNULIB_POSIXCHECK. Add realloc-posix as
suggested by -DGNULIB_POSIXCHECK for gnulib's own vasnprintf.c.
(excluded_files): Remove m4/printf-posix.m4.
* tests/atlocal.in (LIBS): As for LDADD in src/Makefile.am, add
lib/libbison.a so gnulib libraries can be linked.
(cherry picked from commit 5c99151aeb4396bf35b482e27075948c33088afa)
Joel E. Denny [Mon, 14 Dec 2009 23:04:57 +0000 (18:04 -0500)]
Enable assertion output and --disable-assert for configure.
* bootstrap.conf (gnulib_modules): Add assert module.
* src/system.h (aver): Define as assert, and summarize the
discussion on this issue.
(cherry picked from commit ca01f454f01645533622a59ef0df335ee07679e5)
projects / bison.git / log
