Paul Eggert [Thu, 13 Mar 2003 07:13:05 +0000 (07:13 +0000)]
Fix "Bison blows chunks on empty file" bug.
Work around SunOS 4.1.4 porting problem with <sys/resource.h>.
Don't check for sys/wait.h twice, with two different algorithms.
Paul Eggert [Thu, 13 Mar 2003 07:07:17 +0000 (07:07 +0000)]
(YY_USER_INIT): Initialize code_start, too.
(<INITIAL><<EOF>>, <SC_PRE_CODE><<EOF>>): Set *loc to the scanner
cursor, instead of leaving it undefined. This fixes a bug
reported by Tim Van Holder in
<http://mail.gnu.org/archive/html/bug-bison/2003-03/msg00023.html>.
Paul Eggert [Thu, 13 Mar 2003 00:25:33 +0000 (00:25 +0000)]
(BISON_PREREQ_TIMEVAR): When checking whether <sys/resource.h> can be
included, include sys/time.h and sys/times.h first, if available.
This works around the SunOS 4.1.4 porting bug reported by Bruce Becker
in <http://mail.gnu.org/archive/html/bug-bison/2003-03/msg00018.html>.
Akim Demaille [Sun, 2 Mar 2003 13:39:44 +0000 (13:39 +0000)]
* data/yacc.c, data/glr.c, data/lal1.cc: Use similar code to
generate verbose error messages.
Use the number of tokens as an upper bound in yytname, as it
cannot be a non terminal.
Akim Demaille [Sun, 2 Mar 2003 11:22:19 +0000 (11:22 +0000)]
Write a test the yycheck overrun reported by Andrew Suffield.
* tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New.
Use them to exercise yycheck overrun.
Based on Andrew Suffield's grammar.
Akim Demaille [Sun, 2 Mar 2003 11:14:07 +0000 (11:14 +0000)]
Create tests/local.at for Bison generic testing macros.
* tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Move to...
* tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS):
This new file.
* tests/calc.at (AT_CHECK_CALC): Adjust.
* tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR)
(AT_COMPILE, AT_COMPILE_CXX, AT_PARSER_CHECK): Move to...
* tests/local.at: here.
(AT_COMPILE_CXX): Tags the tests using it as c++.
Ignore the test if CXX is not functional.
Paul Eggert [Sun, 2 Mar 2003 06:55:15 +0000 (06:55 +0000)]
(code_start): Initialize it to scanner_cursor,
not loc->end, since loc->end might contain garbage and this leads
to undefined behavior on some platforms.
(id_loc, token_start): Use (IF_LINTed) initial values that do not
depend on *loc, so that the reader doesn't give the the false
impression that *loc is initialized.
(<INITIAL>"%%"): Do not bother setting code_start, since its value
does not survive the return.
Akim Demaille [Sat, 1 Mar 2003 10:55:31 +0000 (10:55 +0000)]
* src/scan-gram.l (code_start): Always initialize it when entering
into yylex, as SC_EPILOGUE is activated *before* the corresponding
yylex invocation. An alternative would be making it static, but
then it starts with the second %%'s beginning, instead of its end.
Paul Eggert [Fri, 28 Feb 2003 09:02:12 +0000 (09:02 +0000)]
* lib/mbswidth.c: Include <wchar.h> before "mbswidth.h", to work
around a UnixWare 7.1.1 porting bug reported by John Hughes in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00030.html>.
Paul Eggert [Fri, 28 Feb 2003 09:00:22 +0000 (09:00 +0000)]
Include <wchar.h> before "mbswidth.h", to work around a UnixWare 7.1.1
porting bug reported by John Hughes in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00030.html>.
Paul Eggert [Wed, 26 Feb 2003 21:27:11 +0000 (21:27 +0000)]
* README: Mention compiler bug in Sun Forte Developer 6 update 2.
Remove Sequent/Pyramid discussion (nobody uses them any more).
Merge VMS and MS-DOS discussion; these ports may well be dead
but let's keep mentioning them for now. Put <> around email
addresses. Add copyright notice.
Paul Eggert [Wed, 26 Feb 2003 21:26:28 +0000 (21:26 +0000)]
Mention compiler bug in Sun Forte Developer 6 update 2.
Remove Sequent/Pyramid discussion (nobody uses them any more).
Merge VMS and MS-DOS discussion; these ports may well be dead
but let's keep mentioning them for now. Put <> around email
addresses. Add copyright notice.
Paul Eggert [Tue, 25 Feb 2003 07:56:34 +0000 (07:56 +0000)]
(yy_reduce_print): yylineno -> yylno,
to avoid collision with flex use of yylineno.
Problem reported by Bruce Lilly in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00016.html>.
Akim Demaille [Thu, 20 Feb 2003 14:42:43 +0000 (14:42 +0000)]
* data/lalr1.cc (position.hh): Make sure "columns" never pushes
before initial_columns.
(location.hh): Use consistent variable names when defining the
operator<<.
Use "last" so that we subtract from Positions, not from unsigned.
Akim Demaille [Thu, 20 Feb 2003 13:36:08 +0000 (13:36 +0000)]
* data/lalr1.cc (position.hh): New subfile, including the extended
and Doxygen'ed documentation of class Position.
(location.hh): Use it.
Document a` la Doxygen.
With the help of BenoƮt Perrot.
Akim Demaille [Thu, 20 Feb 2003 08:14:27 +0000 (08:14 +0000)]
* tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Define
AT_YACC_IF.
Redefine AT_YYERROR_SEES_LOC_IF using it.
(_AT_DATA_CALC_Y): Don't declare yyerror when lalr1.cc, as it is
not defined.
Don't use the location in yy::Parser::error_ and
yy::Parser::print_ when not %locations.
Activate more lalr1.cc tests.
Akim Demaille [Wed, 19 Feb 2003 13:40:53 +0000 (13:40 +0000)]
* tests/calc.at (AT_CHECK_CALC): Check different scenarios of
error recovery, mixing with/without pops and discarding of the
lookahead.
Exercise YYERROR.
Disable the lalr1.cc tests as currently it doesn't support YYERROR.
Paul Eggert [Tue, 18 Feb 2003 05:10:12 +0000 (05:10 +0000)]
* tests/atlocal.in (LDFLAGS, LIBS): New vars.
* tests/testsuite.at (AT_COMPILE): Use them.
This fixes the testsuite problem reported by Robert Lentz in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00011.html>.
Paul Eggert [Thu, 13 Feb 2003 07:15:52 +0000 (07:15 +0000)]
* data/yacc.c (yyerrlab) [YYERROR_VERBOSE]:
Avoid subscript error in yycheck. Bug reported by Andrew Suffield in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00003.html>.
* data/glr.c (yyreportSyntaxError) [YYERROR_VERBOSE]: Likewise.
Check for malloc failure, for consistency with yacc.c.
(yytname_size): Remove, for consistency with yacc.c.
The bug still remains in data/lalr1.cc, as I didn't have time
to fix it there.
Paul Eggert [Thu, 13 Feb 2003 07:14:29 +0000 (07:14 +0000)]
(yyreportSyntaxError) [YYERROR_VERBOSE]:
Avoid subscript error in yycheck. Bug reported by Andrew Suffield in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00003.html>.
Check for malloc failure, for consistency with yacc.c.
(yytname_size): Remove, for consistency with yacc.c.
Paul Eggert [Thu, 13 Feb 2003 07:13:57 +0000 (07:13 +0000)]
(yyerrlab) [YYERROR_VERBOSE]:
Avoid subscript error in yycheck. Bug reported by Andrew Suffield in
<http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00003.html>.
Akim Demaille [Thu, 6 Feb 2003 10:04:29 +0000 (10:04 +0000)]
* configure.ac (GXX): Rename as...
(CXX): this, to keep the original Autoconf semantics.
Require 2.57.
* data/lalr1.cc: Fix b4_copyright invocations.
If YYDEBUG is not defined, don't depend upon name_ being defined.
(location.hh): Include string and iostream.
(Position::filename): New member.
(Position::Position ()): New.
(operator<< (Position)): New.
(operator- (Position, int)): New.
(Location::first, Location::last): Rename as...
(Location::begin, Location::end): these, to mock the conventional
iterator names.
(operator<< (Location)): New.
* tests/atlocal.in (CXX): New.
* tests/testsuite.at (AT_COMPILE_CXX): New.
* tests/calc.at (_AT_DATA_CALC_Y): Adjust yyerror to report the
locations in a more synthetic way.
(AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF is positive if
lalr1.cc is used.
Adjust the C locations to match those from Emacs: first column is
column 0.
Change all the expected results.
Conform to the GCS: simplify the locations when applicable.
(LOC, VAL, YYLLOC_FORMAL, YYLLOC_ARG, USE_YYLLOC, LEX_FORMALS)
(LEX_ARGS, USE_LEX_ARGS, LEX_PRE_FORMALS, LEX_PRE_ARGS): Replace
these CPP macros with the m4 macros new defined by...
(AT_CHECK_PUSHDEFS): this, i.e.:
(AT_LALR1_CC_IF, AT_PURE_LEX_IF, AT_LOC, AT_VAL, AT_LEX_FORMALS)
(AT_LEX_ARGS, AT_USE_LEX_ARGS, AT_LEX_PRE_FORMALSm AT_LEX_PRE_ARGS)
New macros.
(AT_CHECK_POPDEFS): Undefine them.
(AT_CHECK_CALC_LALR1_CC): New.
Use it for the first lalr1.cc test.
Akim Demaille [Thu, 30 Jan 2003 08:03:10 +0000 (08:03 +0000)]
* doc/Makefile.am (CLEANFILES): Add bison.fns for distcheck.
Changes in response to error report by S. Eken: GLR mode does not
(yyfill): New function to copy from stack tree into array
(yyuserAction): Modify to allow incremental move of semantic values
to rhs array when in GLR mode.
Define YYFILL to use in user-defined actions to fill semantic array
(yyresolveStates): Use X == NULL for pointers, not !X.
Paul Hilfinger [Wed, 29 Jan 2003 23:39:11 +0000 (23:39 +0000)]
Rename tests/glr-regr1.at to tests/glr-regression.at.
tests/glr-regression.at: Add new regression test for the problems
reported by S. Eken with semantic values for embedded rules.
Update copyright notice.
tests/testsuite.at, tests/Makefile.am: Rename glr-regr1.at to
glr-regression.at.
Paul Hilfinger [Wed, 29 Jan 2003 23:37:15 +0000 (23:37 +0000)]
Changes in response to error report by S. Eken: GLR mode does not
handle negative $ indices or $ indices in embedded rules correctly.
See <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00076.html>.
(b4_rhs_value): Change to use YYFILL macro.
(b4_rhs_location): Ditto.
(yyfill): New function to copy from stack tree into array
incrementally.
(yyuserAction): Modify to allow incremental move of semantic values
to rhs array when in GLR mode.
Define YYFILL to use in user-defined actions to fill semantic array
as needed.
Remove dummy use of yystack, as there is now a guaranteed use.
(yydoAction): Modify to allow incremental move of semantic values
to rhs array when in GLR mode.
(yyresolveAction): Ditto.
(yyglrShiftDefer): Update comment.
(yyresolveStates): Use X == NULL for pointers, not !X.
(yyglrReduce): Ditto.
(yydoAction): Ditto
Paul Eggert [Wed, 29 Jan 2003 06:31:02 +0000 (06:31 +0000)]
Do not use @output_header_name@ unless
b4_defines_flag is set. This fixes two bugs reported by
Tim Van Holder in
<http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00071.html>
and <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00073.html>.
Paul Eggert [Wed, 22 Jan 2003 06:39:16 +0000 (06:39 +0000)]
* data/yacc.c (YYERROR): Move code from yyerrlab1 to here, so that
we don't need to worry about yyerrlab1 being reported as an
"unused label" by non-GCC C compilers.
Paul Eggert [Wed, 22 Jan 2003 06:38:32 +0000 (06:38 +0000)]
(YYERROR): Move code from yyerrlab1 to here, so that
we don't need to worry about yyerrlab1 being reported as an
"unused label" by non-GCC C compilers. The downside is that if
locations are used then a couple of statements are duplicated each
time YYERROR is invoked, but the upside is that the warnings
should vanish.
(yyerrlab1): Move code to YERROR.
(yyerrlab2): Remove. Change uses back to yyerrlab1.
This reverts some of the 2002-12-27 change.
Paul Eggert [Fri, 17 Jan 2003 08:43:08 +0000 (08:43 +0000)]
(symbol_printers_output): Fix typo that led
to core dump. Problem reported by Antonio Rus in
<http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00058.html>.
Akim Demaille [Mon, 13 Jan 2003 15:42:31 +0000 (15:42 +0000)]
Quoc Peyrot <chojin@lrde.epita.fr>,
Robert Anisko <anisko_r@lrde.epita.fr>
* data/lalr1.cc (parse::yyerrlab1): When popping the stack, stop
when the stacks contain one element, as the loop would otherwise
free the last state, and then use the top state (the one we just
popped). This means that the initial elements will not be freed
explicitly, as is the case in yacc.c; it is not a problem, as
these elements have fake values.
Paul Eggert [Mon, 13 Jan 2003 06:41:29 +0000 (06:41 +0000)]
* NEWS: %expect-violations are now just warnings, reverting
to Bison 1.30 and 1.75 behavior. This fixes the GCC 3.2
bootstrapping problem reported by Matthias Klose; see
<http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00053.html>.
* src/conflicts.c (conflicts_print): Likewise.
* tests/conflicts.at (%expect not enough, %expect too much,
%expect with reduce conflicts): Likewise.
* doc/bison.texinfo (Expect Decl): Document this. Also mention
that the warning is enabled if the number of conflicts changes
(not necessarily increases).
Paul Eggert [Thu, 9 Jan 2003 07:44:05 +0000 (07:44 +0000)]
(WGETFLAGS): New macro, containing "-C off" to disable proxy caches.
All uses of $(WGET) changed to $(WGET) $(WGETFLAGS).
(rel-check): Use $(WGET) instead of wget.
Paul Eggert [Sun, 5 Jan 2003 01:07:13 +0000 (01:07 +0000)]
Do not let the scan-skel token buffer grow unboundedly in the usual case.
Fix off-by-one error in scan-skel calculation of output line.
Fix some portability problems noted by Nelson H. F. Beebe.
Paul Eggert [Sun, 5 Jan 2003 00:48:16 +0000 (00:48 +0000)]
(yyerrlab1): Omit attribute if __cplusplus is defined,
since GNU C++ (as of 3.2.1) does not allow attributes on labels.
Problem reported by Nelson H. F. Beebe.
Paul Eggert [Sat, 4 Jan 2003 01:37:48 +0000 (01:37 +0000)]
(__INT_TO_PTR) [__STDC__]: Cast result to
(void *) to avoid diagnostic with native c89 on SGI IRIX 6.5
when compiling Bison 1.875's `bitset bset = obstack_alloc
(bobstack, bytes);'. Problem reported by Nelson H. F. Beebe.