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default reduction. Reported by Charles-Henry de Boysson. * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Don't check the length of the traces when %glr. (_AT_CHECK_CALC_ERROR): Also skip `^Stack' lines, coming from GLR's traces. (AT_CHECK_CALC_LALR, AT_CHECK_CALC_GLR): New. Test GLR parsers. * data/glr.c (YYLEFTMOST_STATE): Fix its value. (yyltype): Remove the yy prefix from the member names. (yytable): Complete its comment. (yygetLRActions): Map error action number from YYTABLE from YYTABLE_NINF to 0. (yyisErrorAction): No longer compare YYACTION to YYPACT_NINF (which was a bug: it should have been YYTABEL_NINF, and yet it was not satisfying as we could compare an YYACTION computed from YYDEFACT to YYTABLE_NINF although they are unrelated): 0 is the only value for error actions. (yyreportParseError): In verbose parse error messages, don't issue `error' in the list of expected tokens. * data/yacc.c (yyparse) <yybackup>: Rewrite the decoding of the next action to perform to match glr.c's decoding. (yytable): Complete its comment.
This directory contains the Bison parser generator. See the file INSTALL for compilation and installation instructions. See the file doc/FAQ for frequently asked questions. It was once true that, when installing Bison on Sequent (or Pyramid?) systems, you had to be in the Berkeley universe. This may no longer be true; we have no way to tell. On VMS, you will probably have to create Makefile from Makefile.in by hand. Remember to do `SET COMMAND BISON' to install the data in `BISON.CLD'. VMS and MS-DOS builds are probably broken right now. If you are able to build Bison on either platform and you need to make changes to do so, please submit those changes as a bug report. Send bug reports to bug-bison@gnu.org. Please include the version number from `bison --version', and a complete, self-contained test case in each bug report. If you have questions about using Bison which the documentation does not answer, send mail to help-bison@gnu.org.