Warn about unused values.

[bison.git] / ChangeLog

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+2005-12-22  Akim Demaille  <akim@epita.fr>
+
+       Warn about unused values.
+       * src/symlist.h, src/symlist.c (symbol_list, symbol_list_new): Add
+       a `used' member.
+       (symbol_list_n_get, symbol_list_n_used_set): New.
+       (symbol_list_n_type_name_get): Use symbol_list_n_get.
+       * src/scan-gram.l (handle_action_dollar): Flag used symbols.
+       * src/reader.c (grammar_current_rule_check): Check that values are
+       used.
+       * src/symtab.c (symbol_print): Accept 0.
+       * tests/existing.at: Remove the type information.
+       Empty the actions.
+       Remove useless actions (beware of mid-rule actions: perl -000
+       -pi -e 's/\s*\{\}(?=[\n\s]*[|;])//g').
+       * tests/actions.at (Exotic Dollars): Use unused values.
+       * tests/calc.at: Likewise.
+       * tests/glr-regression.at (No users destructors if stack 0 deleted):
+       Likewise.
+
+       * src/gram.c (rule_useful_p, rule_never_reduced_p): Use
+       rule_useful_p.
+
 2005-12-21  Paul Eggert  <eggert@cs.ucla.edu>
 
+       Undo 2005-12-01 tentative license wording change.  The wording is
+       still being reviewed by the lawyers, and we don't want to wait for
+       them before publishing a test release.  For now, revert to the
+       previous wording.
+       * NEWS: Undo 2005-12-01 change.
+       * data/glr.c: Revert to previous license wording.
+       * data/glr.cc: Likewise.
+       * data/lalr1.cc: Likewise.
+       * data/location.cc: Likewise.
+       * data/yacc.c: Likewise.
+
        * NEWS: Reword %destructor vs YYABORT etc.
        * data/glr.c: Use American spacing, for consistency.
        * data/glr.cc: Likewise.