bison ./ChangeLog src/derives.c src/gram.h src/...

[Akim Demaille]

CVSROOT:        /cvsroot/bison
Module name:    bison
Changes by:     Akim Demaille <address@hidden>  01/11/30 05:49:24

Modified files:
        .              : ChangeLog 
        src            : derives.c gram.h print.c reader.c reduce.c 
        tests          : reduce.at 

Log message:
        Instead of mapping the LHS of unused rules to -1, keep the LHS
        valid, but flag the rules as invalid.
        * src/gram.h (rule_t): `useful' is a new member.
        * src/print.c (print_grammar): Adjust.
        * src/derives.c (set_derives): Likewise.
        * src/reader.c (packgram, reduce_output): Likewise.
        * src/reduce.c (reduce_grammar_tables): Likewise.
        * tests/reduce.at (Underivable Rules, Useless Rules): New.

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/ChangeLog.diff?tr1=1.329&tr2=1.330&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/src/derives.c.diff?tr1=1.19&tr2=1.20&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/src/gram.h.diff?tr1=1.10&tr2=1.11&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/src/print.c.diff?tr1=1.30&tr2=1.31&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/src/reader.c.diff?tr1=1.107&tr2=1.108&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/src/reduce.c.diff?tr1=1.31&tr2=1.32&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/tests/reduce.at.diff?tr1=1.4&tr2=1.5&r1=text&r2=text