(declaration): Replace expected_conflicts with expected_sr_conflicts.
Add %expect-rr rule.
* src/scan-gram.l: Recognize %expect-rr.
* src/conflicts.h (expected_sr_conflicts): Rename from
expected_conflicts.
(expected_rr_conflicts): Declare.
* src/conflicts.c (expected_sr_conflicts): Rename from
expected_conflicts.
(expected_rr_conflicts): Define.
(conflicts_print): Check r/r conflicts against expected_rr_conflicts
for GLR parsers.
Use expected_sr_conflicts in place of expected_conflicts.
Warn if expected_rr_conflicts used in non-GLR parser.
* doc/bison.texinfo: Add documentation for %expect-rr.
location that is not defined. This results in garbage, and that
affects Bison's own parser. Therefore we need (i) to extend Bison
to support a means to initialize this location, and (ii) to use
this CVS Bison to fix CVS Bison's parser.
* src/reader.h, reader.c (epilogue_augment): Remove, replace
with...
* src/muscle_tab.h, src/muscle_tab.c (muscle_code_grow): this.
* src/parse-gram.y: Adjust.
(%initial-action): New.
(%error-verbose): Since we require CVS Bison, there is no reason
not to use it.
* src/scan-gram.l: Adjust.
* src/Makefile.am (YACC): New, to make sure we use our own parser.
* data/yacc.c (yyparse): Use b4_initial_action.
(yyrecoverSyntaxError): Correct yyerrState logic. Correct comment.
Allow states with only a default reduction.
Fixes to avoid problem that $-N rules in GLR parsers can cause
buffer overruns, corrupting state.
* src/output.c (prepare_rules): Output max_left_semantic_context.
* src/reader.h (max_left_semantic_context): New
* src/scan-gram.l (max_left_semantic_context): Define.
(handle_action_dollar): Update max_left_semantic_context.
* data/glr.c (YYMAXLEFT): New.
(yydoAction): Increase yyrhsVals size.
(yyresolveAction): Ditto.
Fixes to problems with location handling in GLR parsers reported by
Frank Heckenbach (2003/06/05).
* data/glr.c (YYLTYPE): Make trivial if locations not used.
(YYRHSLOC): Add parentheses, make depend on whether locations used.
(YYLLOC_DEFAULT): Ditto.
(yyuserAction): Use YYLLOC_DEFAULT.
(yydoAction): Remove redundant code.
* tests/cxx-type.at: Exercise location information.
(yylex): Track locations.
(stmtMerge): Return value rather than printing.
semicolon after a grammar declaration, in the interest of possible
future changes to the Bison input language.
Do not allow a stray semicolon at the start of the grammar.
(rhses.1): Allow one or more semicolons after any rule, including
just before "|" as required by POSIX.
(unexpected_eof): Renamed from unexpected_end_of_file, for brevity.
Do not insert the expected token via unput, as this runs afoul
of a POSIX-compatibility bug in flex 2.5.31.
All uses changed to BEGIN the parent state,
since we no longer insert the expected token via unput.
the first one. This change is from Paul Hilfinger, and it fixes
regression reported by Werner Lemberg in
<http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00026.html>.
(resolve_sr_conflict): Don't invoke state_errs_set
unless one or more tokens have been explicitly made errors.
Otherwise, the above change causes Bison to abort.
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.
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.
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
Paul Hilfinger
Paul Eggert
Akim Demaille