* src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty

[bison.git] / ChangeLog

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+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+       * src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty
+       if body instead of `;' to pacify GCC's warnings.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+       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.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+       * src/reduce.c (reduce_output): Formatting changes.
+       * src/print.c (print_results, print_grammar): Likewise.
+       * tests/regression.at (Rule Line Numbers)
+       (Solved SR Conflicts, Unresolved SR Conflicts): Adjust.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+       * src/reduce.c (nonterminals_reduce): Instead of throwing away
+       useless nonterminals, move them at the end of the symbol arrays.
+       (reduce_output): Adjust.
+       * tests/reduce.at (Useless Nonterminals): Adjust.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+       * src/reduce.c: Various comment/formatting changes.
+       (nonterminals_reduce): New, extracted from...
+       (reduce_grammar_tables): here.
+       (reduce_grammar): Call nonterminals_reduce.
+
 2001-11-29  Paul Eggert  <eggert@twinsun.com>
 
        * src/bison.simple (YYSTACK_REALLOC): Remove.