api.value.type: diagnose guaranteed failure with --yacc

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 66acbdaef2aa1a35967ed88e1b3fc9ad9699c387..c47114ab4b7ea9c621b3017d46c4a4d28caf9e44 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -1,11 +1,11 @@
                                                              -*- C -*-
 # Yacc compatible skeleton for Bison
 
-# Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation,
+# Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation,
 # Inc.
 
 m4_pushdef([b4_copyright_years],
-           [1984, 1989-1990, 2000-2012])
+           [1984, 1989-1990, 2000-2013])
 
 # 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
@@ -143,7 +143,6 @@ m4_define([b4_rhs_value],
           [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
 
 
-
 ## ----------- ##
 ## Locations.  ##
 ## ----------- ##
@@ -223,9 +222,9 @@ m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
     int yyerrstatus;
 
     /* The stacks and their tools:
-       `yyss': related to states.
-       `yyvs': related to semantic values.]b4_locations_if([[
-       `yyls': related to locations.]])[
+       'yyss': related to states.
+       'yyvs': related to semantic values.]b4_locations_if([[
+       'yyls': related to locations.]])[
 
        Refer to the stacks through separate pointers, to allow yyoverflow
        to reallocate them elsewhere.  */
@@ -346,11 +345,12 @@ m4_if(b4_api_prefix, [yy], [],
 #define yypstate        ]b4_prefix[pstate]])[
 #define yylex           ]b4_prefix[lex
 #define yyerror         ]b4_prefix[error
-#define yylval          ]b4_prefix[lval
-#define yychar          ]b4_prefix[char
 #define yydebug         ]b4_prefix[debug
-#define yynerrs         ]b4_prefix[nerrs]b4_locations_if([[
-#define yylloc          ]b4_prefix[lloc]])])[
+#define yynerrs         ]b4_prefix[nerrs
+]]b4_pure_if([], [[
+#define yylval          ]b4_prefix[lval
+#define yychar          ]b4_prefix[char]b4_locations_if([[
+#define yylloc          ]b4_prefix[lloc]])]))[
 
 /* Copy the first part of user declarations.  */
 ]b4_user_pre_prologue[
@@ -467,7 +467,7 @@ b4_push_if([], [b4_lac_if([], [[
 # endif]])])[
 
 # ifdef YYSTACK_ALLOC
-   /* Pacify GCC's `empty if-body' warning.  */
+   /* Pacify GCC's 'empty if-body' warning.  */
 #  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
 #  ifndef YYSTACK_ALLOC_MAXIMUM
     /* The OS might guarantee only one guard page at the bottom of the stack,
@@ -604,7 +604,7 @@ static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
 
 #if ]b4_api_PREFIX[DEBUG
 ]b4_integral_parser_table_define([rline], [b4_rline],
-     [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[
+     [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[
 #endif
 
 #if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
@@ -675,7 +675,6 @@ while (0)
 ]b4_yylloc_default_define[
 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
 ]])[
-]b4_yy_location_print_define[
 
 /* Enable debugging if requested.  */
 #if ]b4_api_PREFIX[DEBUG
@@ -691,6 +690,8 @@ do {                                            \
     YYFPRINTF Args;                             \
 } while (0)
 
+]b4_yy_location_print_define[
+
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
 do {                                                                      \
   if (yydebug)                                                            \
@@ -1652,7 +1653,7 @@ yyreduce:
   yylen = yyr2[yyn];
 
   /* If YYLEN is nonzero, implement the default value of the action:
-     `$$ = $1'.
+     '$$ = $1'.
 
      Otherwise, the following line sets YYVAL to garbage.
      This behavior is undocumented and Bison
@@ -1700,7 +1701,7 @@ yyreduce:
   *++yyvsp = yyval;]b4_locations_if([
   *++yylsp = yyloc;])[
 
-  /* Now `shift' the result of the reduction.  Determine what state
+  /* Now 'shift' the result of the reduction.  Determine what state
      that goes to, based on the state we popped back to and the rule
      number reduced by.  */