glr.cc: fix a clang warning

[bison.git] / data / lalr1.cc

diff --git a/data/lalr1.cc b/data/lalr1.cc
index 46e58ae26fab6188a05e7fc5b7cd17d52a9766f1..f6568695bc95473c219b1bf92b361f70a8acadf1 100644 (file)
--- a/data/lalr1.cc
+++ b/data/lalr1.cc
@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -30,13 +30,10 @@ b4_percent_define_ifdef([[api.location.type]], [],
   m4_include(b4_pkgdatadir/[location.cc])])
 m4_include(b4_pkgdatadir/[stack.hh])
 
-# We do want M4 expansion after # for CPP macros.
-m4_changecom()
-m4_divert_push(0)dnl
 b4_defines_if(
-[@output(b4_spec_defines_file@)@
+[b4_output_begin([b4_spec_defines_file])
 b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
-             [2002-2012])
+             [2002-2013])
 [
 /**
  ** \file ]b4_spec_defines_file[
@@ -110,6 +107,10 @@ b4_user_stype
 #endif
 
   private:
+    /// This class is not copyable.
+    ]b4_parser_class_name[ (const ]b4_parser_class_name[&);
+    ]b4_parser_class_name[& operator= (const ]b4_parser_class_name[&);
+
     /// Report a syntax error.
     /// \param loc    where the syntax error is found.
     /// \param msg    a description of the syntax error.
@@ -265,10 +266,13 @@ b4_user_stype
 ])[
 ]b4_percent_code_get([[provides]])[
 ]b4_cpp_guard_close([b4_spec_defines_file])
-])dnl
-@output(b4_parser_file_name@)@
+b4_output_end()
+])
+
+
+b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
-             [2002-2012])
+             [2002-2013])
 b4_percent_code_get([[top]])[]dnl
 m4_if(b4_prefix, [yy], [],
 [
@@ -418,12 +422,7 @@ do {                                       \
     std::ostream& yyo = debug_stream ();
     std::ostream& yyoutput = yyo;
     YYUSE (yyoutput);
-    switch (yytype)
-      {
-  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-[       default:
-         break;
-      }
+    ]b4_symbol_actions([printers])[
   }
 
 
@@ -450,12 +449,7 @@ do {                                       \
     if (yymsg)
       YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
 
-    switch (yytype)
-      {
-  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
-       default:
-         break;
-      }
+    ]b4_symbol_actions([destructors])[
   }
 
   void
@@ -512,17 +506,18 @@ do {                                      \
     int yychar = yyempty_;
     int yytoken = 0;
 
-    /* State.  */
+    // State.
     int yyn;
     int yylen = 0;
     int yystate = 0;
 
-    /* Error handling.  */
+    // Error handling.
     int yynerrs_ = 0;
     int yyerrstatus_ = 0;
 
     /// Semantic value of the lookahead.
-    semantic_type yylval;
+    static semantic_type yyval_default;
+    semantic_type yylval = yyval_default;
     /// Location of the lookahead.
     location_type yylloc;
     /// The locations where the error started and ended.
@@ -551,9 +546,9 @@ b4_dollar_popdef])[]dnl
        yynewstate, since the latter expects the semantical and the
        location values to have been already stored, initialize these
        stacks with a primary value.  */
-    yystate_stack_ = state_stack_type (0);
-    yysemantic_stack_ = semantic_stack_type (0);
-    yylocation_stack_ = location_stack_type (0);
+    yystate_stack_.clear ();
+    yysemantic_stack_.clear ();
+    yylocation_stack_.clear ();
     yysemantic_stack_.push (yylval);
     yylocation_stack_.push (yylloc);
 
@@ -1139,4 +1134,4 @@ b4_error_verbose_if([int yystate, int yytoken],
 
 ]b4_namespace_close[
 ]b4_epilogue[]dnl
-m4_divert_pop(0)
+b4_output_end()