Merge remote-tracking branch 'origin/maint'

[bison.git] / tests / actions.at

diff --git a/tests/actions.at b/tests/actions.at
index 099237c331c299191bfcaaeb5322e1d4f70eba68..6c1ecbc1f6dfcf65f32e6c11598ebcd299a6d27b 100644 (file)
--- a/tests/actions.at
+++ b/tests/actions.at
@@ -1,6 +1,6 @@
 e# Executing Actions.                               -*- Autotest -*-
 
 e# Executing Actions.                               -*- Autotest -*-
 

-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001-2013 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
 
 # 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


@@ -32,10 +32,10 @@ AT_BISON_OPTION_PUSHDEFS
 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug
 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug

-%{
+%code {

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[

-%}
+}

 %%
 exp:     { putchar ('0'); }
      '1' { putchar ('1'); }
 %%
 exp:     { putchar ('0'); }
      '1' { putchar ('1'); }


@@ -52,11 +52,7 @@ exp:     { putchar ('0'); }
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["123456789"])[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["123456789"])[

-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 
 ]])
 AT_BISON_OPTION_POPDEFS
 


@@ -68,6 +64,119 @@ AT_PARSER_CHECK([./input], 0,
 
 AT_CLEANUP
 
 
 AT_CLEANUP
 

+## ----------------------- ##
+## Implicitly empty rule.  ##
+## ----------------------- ##
+
+AT_SETUP([Implicitly empty rule])
+
+AT_DATA_GRAMMAR([[1.y]],
+[[%%
+exp: a b;
+a: /* empty. */ {};
+// A mid-rule action does not count as an empty rule.
+b: {} {};
+]])
+
+AT_BISON_CHECK([-fcaret -Wempty-rule 1.y], [0], [],
+[[1.y:11.17-18: warning: empty rule without %empty [-Wempty-rule]
+ a: /* empty. */ {};
+                 ^^
+]])
+
+AT_DATA_GRAMMAR([[2.y]],
+[[%%
+exp: a b c;
+a: /* empty. */ {};
+b: %empty       {};
+c: /* empty. */ {};
+]])
+
+AT_BISON_CHECK([-fcaret 2.y], [0], [],
+[[2.y:11.17-18: warning: empty rule without %empty [-Wempty-rule]
+ a: /* empty. */ {};
+                 ^^
+2.y:13.17-18: warning: empty rule without %empty [-Wempty-rule]
+ c: /* empty. */ {};
+                 ^^
+]])
+
+AT_BISON_CHECK([-fcaret -Wno-empty-rule 2.y], [0])
+
+AT_CLEANUP
+
+## ------------------------ ##
+## Invalid uses of %empty.  ##
+## ------------------------ ##
+
+AT_SETUP([Invalid uses of %empty])
+
+AT_DATA_GRAMMAR([[one.y]],
+[[%%
+exp:
+  %empty {} %empty
+;
+]])
+
+AT_BISON_CHECK([-fcaret one.y], [1], [],
+[[one.y:11.13-18: error: only one %empty allowed per rule
+   %empty {} %empty
+             ^^^^^^
+one.y:11.3-8: previous declaration
+   %empty {} %empty
+   ^^^^^^
+]])
+
+AT_DATA_GRAMMAR([[two.y]],
+[[%%
+exp:
+  'a' %empty    {}
+| %empty 'a'    {}
+| %empty {}     {}
+;
+]])
+
+AT_BISON_CHECK([-fcaret two.y], [1], [],
+[[two.y:11.7-12: error: %empty on non-empty rule
+   'a' %empty    {}
+       ^^^^^^
+two.y:12.3-8: error: %empty on non-empty rule
+ | %empty 'a'    {}
+   ^^^^^^
+two.y:13.3-8: error: %empty on non-empty rule
+ | %empty {}     {}
+   ^^^^^^
+]])
+
+AT_CLEANUP
+
+## ---------------------- ##
+## Valid uses of %empty.  ##
+## ---------------------- ##
+
+AT_SETUP([Valid uses of %empty])
+
+AT_BISON_OPTION_PUSHDEFS
+AT_DATA_GRAMMAR([[input.y]],
+[[
+%debug
+%code
+{
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE[
+}
+%%
+exp: %empty {}
+%%
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE[
+]AT_MAIN_DEFINE[
+]])
+
+AT_FULL_COMPILE([input])
+AT_PARSER_CHECK([./input])
+AT_BISON_OPTION_POPDEFS
+AT_CLEANUP

 
 ## ------------------ ##
 ## Initial location.  ##
 
 ## ------------------ ##
 ## Initial location.  ##


@@ -79,25 +188,23 @@ AT_CLEANUP
 m4_pushdef([AT_TEST],
 [AT_SETUP([Initial location: $1 $2])
 
 m4_pushdef([AT_TEST],
 [AT_SETUP([Initial location: $1 $2])
 

-AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" $2 %parse-param { int x }])
+AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" $2])

 AT_DATA_GRAMMAR([[input.y]],
 AT_DATA_GRAMMAR([[input.y]],

-[[%defines /* FIXME: Required by lalr1.cc in Bison 2.6. */
-%locations
+[[%locations

 %debug
 %skeleton "$1"
 ]$2[
 ]$3[
 %debug
 %skeleton "$1"
 ]$2[
 ]$3[

-%parse-param { int x } // Useless, but used to force yyerror purity.

 %code
 {
 # include <stdio.h>
 %code
 {
 # include <stdio.h>

-# include <stdlib.h> // getenv
+# include <stdlib.h> /* getenv */

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 }
 %%
 exp: { ]AT_SKEL_CC_IF([[std::cerr << @$ << std::endl]],
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 }
 %%
 exp: { ]AT_SKEL_CC_IF([[std::cerr << @$ << std::endl]],

-                      [[YY_LOCATION_PRINT(stderr, @$); fputc ('\n', stderr)]])[; }
+                      [[LOCATION_PRINT(stderr, @$); fputc ('\n', stderr)]])[; }

 %%
 ]AT_YYERROR_DEFINE[
 
 %%
 ]AT_YYERROR_DEFINE[
 


@@ -113,11 +220,11 @@ exp: { ]AT_SKEL_CC_IF([[std::cerr << @$ << std::endl]],
 int
 main (void)
 {]AT_SKEL_CC_IF([[
 int
 main (void)
 {]AT_SKEL_CC_IF([[

-  yy::parser p (0);
+  yy::parser p;

   p.set_debug_level (!!getenv("YYDEBUG"));
   return p.parse ();]], [[
   yydebug = !!getenv("YYDEBUG");
   p.set_debug_level (!!getenv("YYDEBUG"));
   return p.parse ();]], [[
   yydebug = !!getenv("YYDEBUG");

-  return !!yyparse (0);]])[
+  return !!yyparse (]AT_PARAM_IF([0])[);]])[

 }
 ]])
 
 }
 ]])
 


@@ -132,10 +239,12 @@ AT_CLEANUP
 
 ## FIXME: test Java, and iterate over skeletons.
 AT_TEST([yacc.c])
 
 ## FIXME: test Java, and iterate over skeletons.
 AT_TEST([yacc.c])

-AT_TEST([yacc.c], [%define api.pure])
+AT_TEST([yacc.c], [%define api.pure full])
+AT_TEST([yacc.c], [%define api.pure %parse-param { int x }])

 AT_TEST([yacc.c], [%define api.push-pull both])
 AT_TEST([yacc.c], [%define api.push-pull both])

-AT_TEST([yacc.c], [%define api.push-pull both %define api.pure])
+AT_TEST([yacc.c], [%define api.push-pull both %define api.pure full])

 AT_TEST([glr.c])
 AT_TEST([glr.c])

+AT_TEST([glr.c], [%define api.pure])

 AT_TEST([lalr1.cc])
 AT_TEST([glr.cc])
 
 AT_TEST([lalr1.cc])
 AT_TEST([glr.cc])
 


@@ -146,10 +255,10 @@ AT_TEST([glr.cc])
 ## Weirdly enough, to trigger the warning with GCC 4.7, we must not
 ## use fprintf, so run the test twice: once to check the warning
 ## (absence thereof), and another time to check the value.
 ## Weirdly enough, to trigger the warning with GCC 4.7, we must not
 ## use fprintf, so run the test twice: once to check the warning
 ## (absence thereof), and another time to check the value.

-AT_TEST([yacc.c], [%define api.pure],
+AT_TEST([yacc.c], [%define api.pure full],

 [[%{
 # define YYLTYPE int
 [[%{
 # define YYLTYPE int

-# define YY_LOCATION_PRINT(Stream, Loc)      \
+# define LOCATION_PRINT(Stream, Loc)      \

    (void) (Loc)
 # define YYLLOC_DEFAULT(Current, Rhs, N)    \
   (Current) = ((Rhs)[N ? 1 : 0])
    (void) (Loc)
 # define YYLLOC_DEFAULT(Current, Rhs, N)    \
   (Current) = ((Rhs)[N ? 1 : 0])


@@ -157,10 +266,10 @@ AT_TEST([yacc.c], [%define api.pure],
 ]],
 [@&t@])
 
 ]],
 [@&t@])
 

-AT_TEST([yacc.c], [%define api.pure],
+AT_TEST([yacc.c], [%define api.pure full],

 [[%{
 # define YYLTYPE int
 [[%{
 # define YYLTYPE int

-# define YY_LOCATION_PRINT(Stream, Loc)      \
+# define LOCATION_PRINT(Stream, Loc)      \

     fprintf ((Stream), "%d", (Loc))
 # define YYLLOC_DEFAULT(Current, Rhs, N)    \
   (Current) = ((Rhs)[N ? 1 : 0])
     fprintf ((Stream), "%d", (Loc))
 # define YYLLOC_DEFAULT(Current, Rhs, N)    \
   (Current) = ((Rhs)[N ? 1 : 0])


@@ -173,6 +282,82 @@ m4_popdef([AT_TEST])
 
 
 
 
 
 

+## ---------------- ##
+## Location Print.  ##
+## ---------------- ##
+
+# AT_TEST(SKELETON-NAME, DIRECTIVES, [MORE-DIRECTIVES])
+# -----------------------------------------------------
+# Check that the initial location is correct.
+m4_pushdef([AT_TEST],
+[AT_SETUP([Location print: $1 $2])
+
+AT_BISON_OPTION_PUSHDEFS([%locations %skeleton "$1" $2])
+AT_DATA_GRAMMAR([[input.y]],
+[[%locations
+%debug
+%skeleton "$1"
+]$2[
+]$3[
+%code
+{
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE[
+}
+%%
+exp: %empty;
+%%
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE[
+
+int
+main (void)
+{
+  ]AT_YYLTYPE[ loc;
+]AT_GLR_CC_IF([loc.initialize();])[
+#define TEST(L1, C1, L2, C2)          \
+  loc.]AT_FIRST_LINE[ = L1;           \
+  loc.]AT_FIRST_COLUMN[ = C1;         \
+  loc.]AT_LAST_LINE[ = L2;            \
+  loc.]AT_LAST_COLUMN[ = C2;          \
+  ]AT_SKEL_CC_IF([std::cout << loc],
+                 [LOCATION_PRINT(stdout, loc)])[;\
+  putchar ('\n');
+
+  TEST(1, 1, 1, 1);
+  TEST(2, 1, 2, 10);
+  TEST(3, 1, 4, 1);
+  TEST(5, 1, 6, 10);
+
+  TEST(7, 2, 0, 2);
+  TEST(8, 0, 8, 0);
+  return 0;
+}
+]])
+
+AT_FULL_COMPILE([input])
+AT_PARSER_CHECK([./input], 0,
+[[1.1
+2.1-9
+3.1-4.0
+5.1-6.9
+7.2
+8.0
+]])
+AT_BISON_OPTION_POPDEFS
+AT_CLEANUP
+])
+
+## FIXME: test Java, and iterate over skeletons.
+AT_TEST([yacc.c])
+AT_TEST([glr.c])
+AT_TEST([lalr1.cc])
+AT_TEST([glr.cc])
+
+m4_popdef([AT_TEST])
+
+
+

 ## ---------------- ##
 ## Exotic Dollars.  ##
 ## ---------------- ##
 ## ---------------- ##
 ## Exotic Dollars.  ##
 ## ---------------- ##


@@ -183,11 +368,11 @@ AT_BISON_OPTION_PUSHDEFS
 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug
 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug

-%{
+%code {

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(Var)
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(Var)

-%}
+}

 
 %union
 {
 
 %union
 {


@@ -218,11 +403,7 @@ sum_of_the_five_previous_values:
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[

-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 
 AT_BISON_CHECK([-d -v -o input.c input.y], 0)
 ]])
 
 AT_BISON_CHECK([-d -v -o input.c input.y], 0)


@@ -237,7 +418,6 @@ AT_PARSER_CHECK([./input], 0,
 AT_DATA_GRAMMAR([[input.y]],
 [[
 %{
 AT_DATA_GRAMMAR([[input.y]],
 [[
 %{

-# include <stdio.h>

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
   typedef struct { int val; } stype;
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
   typedef struct { int val; } stype;


@@ -253,11 +433,7 @@ sum: { printf ("%d\n", $0.val + $-1.val + $-2.val); } ;
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[

-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 
 AT_FULL_COMPILE([input])
 ]])
 
 AT_FULL_COMPILE([input])


@@ -352,7 +528,7 @@ AT_LALR1_CC_IF([typedef yy::location YYLTYPE;])[
 %%
 /*
    This grammar is made to exercise error recovery.
 %%
 /*
    This grammar is made to exercise error recovery.

-   "Lines" starting with `(' support error recovery, with
+   "Lines" starting with '(' support error recovery, with

    ')' as synchronizing token.  Lines starting with 'x' can never
    be recovered from if in error.
 */
    ')' as synchronizing token.  Lines starting with 'x' can never
    be recovered from if in error.
 */


@@ -429,11 +605,11 @@ static
 {
   static unsigned int counter = 0;
 
 {
   static unsigned int counter = 0;
 

-  int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++;
+  unsigned int c = ]AT_VAL[]m4_ifval([$6], [.ival])[ = counter++;

   /* As in BASIC, line numbers go from 10 to 10.  */
   ]AT_LOC_FIRST_LINE[ = ]AT_LOC_FIRST_COLUMN[ = 10 * c;
   ]AT_LOC_LAST_LINE[ = ]AT_LOC_LAST_COLUMN[ = ]AT_LOC_FIRST_LINE[ + 9;
   /* As in BASIC, line numbers go from 10 to 10.  */
   ]AT_LOC_FIRST_LINE[ = ]AT_LOC_FIRST_COLUMN[ = 10 * c;
   ]AT_LOC_LAST_LINE[ = ]AT_LOC_LAST_COLUMN[ = ]AT_LOC_FIRST_LINE[ + 9;

-  assert (0 <= c && c <= strlen (source));
+  assert (c <= strlen (source));

   if (source[c])
     fprintf (stderr, "sending: '%c'", source[c]);
   else
   if (source[c])
     fprintf (stderr, "sending: '%c'", source[c]);
   else


@@ -515,7 +691,7 @@ Successful parse.
 
 # Syntax errors caught by the parser
 # ----------------------------------
 
 # Syntax errors caught by the parser
 # ----------------------------------

-# Exercise the discarding of stack top and input until `error'
+# Exercise the discarding of stack top and input until 'error'

 # can be reduced.
 #
 #     '(', 'x', 'x', 'x', 'x', 'x', ')',
 # can be reduced.
 #
 #     '(', 'x', 'x', 'x', 'x', 'x', ')',


@@ -672,13 +848,13 @@ AT_CLEANUP
 
 
 AT_CHECK_PRINTER_AND_DESTRUCTOR([])
 
 
 AT_CHECK_PRINTER_AND_DESTRUCTOR([])

-AT_CHECK_PRINTER_AND_DESTRUCTOR([], [with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([], [ with union])

 
 AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"])
 
 AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"])

-AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"], [with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%defines %skeleton "lalr1.cc"], [ with union])

 
 AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser])
 
 AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser])

-AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [with union])
+AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [ with union])

 
 
 
 
 
 


@@ -690,19 +866,17 @@ AT_CHECK_PRINTER_AND_DESTRUCTOR([%glr-parser], [with union])
 # called for $end, and that $$ and @$ work correctly.
 
 AT_SETUP([Default tagless %printer and %destructor])
 # called for $end, and that $$ and @$ work correctly.
 
 AT_SETUP([Default tagless %printer and %destructor])

-AT_BISON_OPTION_PUSHDEFS([%locations])
+AT_BISON_OPTION_PUSHDEFS([%locations %debug])

 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug
 %locations
 
 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug
 %locations
 

-%{
-# include <stdio.h>
-# include <stdlib.h>
+%code {

 ]AT_YYLEX_DECLARE[
 ]AT_YYERROR_DECLARE[
 # define USE(SYM)
 ]AT_YYLEX_DECLARE[
 ]AT_YYERROR_DECLARE[
 # define USE(SYM)

-%}
+}

 
 %printer {
   fprintf (yyoutput, "<*> printer should not be called.\n");
 
 %printer {
   fprintf (yyoutput, "<*> printer should not be called.\n");


@@ -733,21 +907,15 @@ start: 'a' 'b' 'c' 'd' 'e' { $$ = 'S'; USE(($1, $2, $3, $4, $5)); } ;
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abcd"], [[yylval = res]])[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abcd"], [[yylval = res]])[

-
-int
-main (void)
-{
-  yydebug = 1;
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 
 AT_BISON_CHECK([-o input.c input.y], [], [],
 ]])
 
 AT_BISON_CHECK([-o input.c input.y], [], [],

-[[input.y:23.3-5: warning: useless %destructor for type <*> [-Wother]
-input.y:23.3-5: warning: useless %printer for type <*> [-Wother]
+[[input.y:30.3-5: warning: useless %destructor for type <*> [-Wother]
+input.y:30.3-5: warning: useless %printer for type <*> [-Wother]

 ]])
 AT_COMPILE([input])
 ]])
 AT_COMPILE([input])

-AT_PARSER_CHECK([./input], 1,
+AT_PARSER_CHECK([./input --debug], 1,

 [[<> destructor for 'd' @ 4.
 'b'/'c' destructor for 'c' @ 3.
 'b'/'c' destructor for 'b' @ 2.
 [[<> destructor for 'd' @ 4.
 'b'/'c' destructor for 'c' @ 3.
 'b'/'c' destructor for 'b' @ 2.


@@ -791,14 +959,12 @@ AT_CLEANUP
 ## ------------------------------------------------------ ##
 
 AT_SETUP([Default tagged and per-type %printer and %destructor])
 ## ------------------------------------------------------ ##
 
 AT_SETUP([Default tagged and per-type %printer and %destructor])

-AT_BISON_OPTION_PUSHDEFS
+AT_BISON_OPTION_PUSHDEFS([%debug])

 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug
 
 %{
 AT_DATA_GRAMMAR([[input.y]],
 [[%define parse.error verbose
 %debug
 
 %{

-# include <stdio.h>
-# include <stdlib.h>

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(SYM)
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(SYM)


@@ -848,13 +1014,7 @@ start:
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abcdef"])[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abcdef"])[

-
-int
-main (void)
-{
-  yydebug = 1;
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 
 AT_BISON_CHECK([-o input.c input.y], [], [],
 ]])
 
 AT_BISON_CHECK([-o input.c input.y], [], [],


@@ -862,7 +1022,7 @@ AT_BISON_CHECK([-o input.c input.y], [], [],
 input.y:22.3-4: warning: useless %printer for type <> [-Wother]
 ]])
 AT_COMPILE([input])
 input.y:22.3-4: warning: useless %printer for type <> [-Wother]
 ]])
 AT_COMPILE([input])

-AT_PARSER_CHECK([./input], 1,
+AT_PARSER_CHECK([./input --debug], 1,

 [[<*>/<field2>/e destructor.
 <*>/<field2>/e destructor.
 'd' destructor.
 [[<*>/<field2>/e destructor.
 <*>/<field2>/e destructor.
 'd' destructor.


@@ -926,19 +1086,17 @@ m4_pushdef([AT_TEST],
   [m4_pushdef([kind], []) m4_pushdef([not_kind], [*])],
   [m4_pushdef([kind], [*]) m4_pushdef([not_kind], [])])
 
   [m4_pushdef([kind], []) m4_pushdef([not_kind], [*])],
   [m4_pushdef([kind], [*]) m4_pushdef([not_kind], [])])
 

-AT_BISON_OPTION_PUSHDEFS([%locations])
+AT_BISON_OPTION_PUSHDEFS([%locations %debug])

 AT_DATA_GRAMMAR([[input]]$1[[.y]],
 [[%define parse.error verbose
 %debug
 %locations
 
 AT_DATA_GRAMMAR([[input]]$1[[.y]],
 [[%define parse.error verbose
 %debug
 %locations
 

-%{
-# include <stdio.h>
-# include <stdlib.h>
+%code {

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(SYM)
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(SYM)

-%}
+}

 
 %destructor {
   fprintf (yyoutput, "<]]not_kind[[> destructor should not be called.\n");
 
 %destructor {
   fprintf (yyoutput, "<]]not_kind[[> destructor should not be called.\n");


@@ -966,7 +1124,7 @@ AT_DATA_GRAMMAR([[input]]$1[[.y]],
 start: { $$ = 'S'; } ;
 
 %%
 start: { $$ = 'S'; } ;
 
 %%

-
+#include <stdlib.h> /* abort */

 static int
 yylex (void)
 {
 static int
 yylex (void)
 {


@@ -979,34 +1137,28 @@ yylex (void)
   return 0;
 }
 ]AT_YYERROR_DEFINE[
   return 0;
 }
 ]AT_YYERROR_DEFINE[

-
-int
-main (void)
-{
-  yydebug = 1;
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([-o input$1.c input$1.y], [], [],
 [m4_if([$1], [0],
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([-o input$1.c input$1.y], [], [],
 [m4_if([$1], [0],

-[[input0.y:23.3-5: warning: useless %destructor for type <*> [-Wother]
-input0.y:23.3-5: warning: useless %printer for type <*> [-Wother]
+[[input0.y:30.3-5: warning: useless %destructor for type <*> [-Wother]
+input0.y:30.3-5: warning: useless %printer for type <*> [-Wother]

 ]],
 ]],

-[[input1.y:23.3-4: warning: useless %destructor for type <> [-Wother]
-input1.y:23.3-4: warning: useless %printer for type <> [-Wother]
+[[input1.y:30.3-4: warning: useless %destructor for type <> [-Wother]
+input1.y:30.3-4: warning: useless %printer for type <> [-Wother]

 ]])])
 
 AT_COMPILE([input$1])
 
 ]])])
 
 AT_COMPILE([input$1])
 

-AT_PARSER_CHECK([./input$1], 0,
+AT_PARSER_CHECK([./input$1 --debug], 0,

 [[<]]kind[[> for 'E' @ 1.
 <]]kind[[> for 'S' @ 1.
 ]],
 [[Starting parse
 Entering state 0
 [[<]]kind[[> for 'E' @ 1.
 <]]kind[[> for 'S' @ 1.
 ]],
 [[Starting parse
 Entering state 0

-Reducing stack by rule 1 (line 42):
+Reducing stack by rule 1 (line 49):

 -> $$ = nterm start (1.1: <]]kind[[> for 'S' @ 1)
 Stack now 0
 Entering state 1
 -> $$ = nterm start (1.1: <]]kind[[> for 'S' @ 1)
 Stack now 0
 Entering state 1


@@ -1045,7 +1197,7 @@ AT_SETUP([Default %printer and %destructor are not for error or $undefined])
 #       semantic value, which would be initialized from the lookahead, which
 #       would be destroyed separately.
 #   - For $undefined, who knows what the semantic value would be.
 #       semantic value, which would be initialized from the lookahead, which
 #       would be destroyed separately.
 #   - For $undefined, who knows what the semantic value would be.

-AT_BISON_OPTION_PUSHDEFS
+AT_BISON_OPTION_PUSHDEFS([%debug])

 AT_DATA_GRAMMAR([[input.y]],
 [[%debug
 
 AT_DATA_GRAMMAR([[input.y]],
 [[%debug
 


@@ -1076,21 +1228,16 @@ start:
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abd"], [yylval = res])[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abd"], [yylval = res])[

-int
-main (void)
-{
-  yydebug = 1;
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([-o input.c input.y], [], [],
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([-o input.c input.y], [], [],

-[[input.y:21.6-8: warning: useless %destructor for type <*> [-Wother]
-input.y:21.6-8: warning: useless %printer for type <*> [-Wother]
+[[input.y:23.6-8: warning: useless %destructor for type <*> [-Wother]
+input.y:23.6-8: warning: useless %printer for type <*> [-Wother]

 ]])
 AT_COMPILE([input])
 ]])
 AT_COMPILE([input])

-AT_PARSER_CHECK([./input], [1], [],
+AT_PARSER_CHECK([./input --debug], [1], [],

 [[Starting parse
 Entering state 0
 Reading a token: Next token is token 'a' ('a')
 [[Starting parse
 Entering state 0
 Reading a token: Next token is token 'a' ('a')


@@ -1140,7 +1287,7 @@ AT_SETUP([Default %printer and %destructor are not for $accept])
 #   - The %printer and %destructor code generated for $accept would always be
 #     dead code because $accept is currently never shifted onto the stack.
 #   - $$ for $accept would always be of type YYSTYPE because it's not possible
 #   - The %printer and %destructor code generated for $accept would always be
 #     dead code because $accept is currently never shifted onto the stack.
 #   - $$ for $accept would always be of type YYSTYPE because it's not possible

-#     to declare `%type <field> $accept'.  (Also true for $undefined.)
+#     to declare '%type <field> $accept'.  (Also true for $undefined.)

 #   - Thus, the compiler might complain that the user code assumes the wrong
 #     type for $$ since the code might assume the type associated with a
 #     specific union field, which is especially reasonable in C++ since that
 #   - Thus, the compiler might complain that the user code assumes the wrong
 #     type for $$ since the code might assume the type associated with a
 #     specific union field, which is especially reasonable in C++ since that


@@ -1148,7 +1295,7 @@ AT_SETUP([Default %printer and %destructor are not for $accept])
 #     true for $undefined and the error token, so there are three warnings for
 #     %printer and three for %destructor.)
 
 #     true for $undefined and the error token, so there are three warnings for
 #     %printer and three for %destructor.)
 

-AT_BISON_OPTION_PUSHDEFS
+AT_BISON_OPTION_PUSHDEFS([%debug])

 AT_DATA_GRAMMAR([[input.y]],
 [[%debug /* So that %printer is actually compiled.  */
 
 AT_DATA_GRAMMAR([[input.y]],
 [[%debug /* So that %printer is actually compiled.  */
 


@@ -1179,17 +1326,13 @@ start: { USE($$); } ;
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[

-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([-o input.c input.y], [], [],
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([-o input.c input.y], [], [],

-[[input.y:22.3-4: warning: useless %destructor for type <> [-Wother]
-input.y:22.3-4: warning: useless %printer for type <> [-Wother]
+[[input.y:24.3-4: warning: useless %destructor for type <> [-Wother]
+input.y:24.3-4: warning: useless %printer for type <> [-Wother]

 ]])
 AT_COMPILE([input])
 
 ]])
 AT_COMPILE([input])
 


@@ -1203,19 +1346,17 @@ AT_CLEANUP
 
 AT_SETUP([Default %printer and %destructor for mid-rule values])
 
 
 AT_SETUP([Default %printer and %destructor for mid-rule values])
 

-AT_BISON_OPTION_PUSHDEFS
+AT_BISON_OPTION_PUSHDEFS([%debug])

 AT_DATA_GRAMMAR([[input.y]],
 [[%debug /* So that %printer is actually compiled.  */
 
 %{
 AT_DATA_GRAMMAR([[input.y]],
 [[%debug /* So that %printer is actually compiled.  */
 
 %{

-# include <stdio.h>
-# include <stdlib.h>

 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(SYM)
 # define YYLTYPE int
 # define YYLLOC_DEFAULT(Current, Rhs, N) (void)(Rhs)
 ]AT_YYERROR_DECLARE[
 ]AT_YYLEX_DECLARE[
 # define USE(SYM)
 # define YYLTYPE int
 # define YYLLOC_DEFAULT(Current, Rhs, N) (void)(Rhs)

-# define YY_LOCATION_PRINT(File, Loc)
+# define LOCATION_PRINT(File, Loc)

 %}
 
 %printer { fprintf (yyoutput, "%d", @$); } <>
 %}
 
 %printer { fprintf (yyoutput, "%d", @$); } <>


@@ -1237,12 +1378,7 @@ start:
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[

-int
-main (void)
-{
-  yydebug = 1;
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 
 ]])
 AT_BISON_OPTION_POPDEFS
 


@@ -1250,11 +1386,26 @@ AT_BISON_CHECK([-o input.c input.y], 0,,
 [[input.y:24.70-72: warning: useless %destructor for type <*> [-Wother]
 input.y:24.70-72: warning: useless %printer for type <*> [-Wother]
 input.y:33.3-23: warning: unset value: $$ [-Wother]
 [[input.y:24.70-72: warning: useless %destructor for type <*> [-Wother]
 input.y:24.70-72: warning: useless %printer for type <*> [-Wother]
 input.y:33.3-23: warning: unset value: $$ [-Wother]

-input.y:30.3-35.37: warning: unused value: $3 [-Wother]
+input.y:32.3-23: warning: unused value: $3 [-Wother]
+]])
+
+AT_BISON_CHECK([-fcaret -o input.c input.y], 0,,
+[[input.y:24.70-72: warning: useless %destructor for type <*> [-Wother]
+ %printer { fprintf (yyoutput, "<*> printer should not be called"); } <*>
+                                                                      ^^^
+input.y:24.70-72: warning: useless %printer for type <*> [-Wother]
+ %printer { fprintf (yyoutput, "<*> printer should not be called"); } <*>
+                                                                      ^^^
+input.y:33.3-23: warning: unset value: $$ [-Wother]
+   {           @$ = 4; } // Only used.
+   ^^^^^^^^^^^^^^^^^^^^^
+input.y:32.3-23: warning: unused value: $3 [-Wother]
+   { USE ($$); @$ = 3; } // Only set.
+   ^^^^^^^^^^^^^^^^^^^^^

 ]])
 
 AT_COMPILE([input])
 ]])
 
 AT_COMPILE([input])

-AT_PARSER_CHECK([./input], 1,,
+AT_PARSER_CHECK([./input --debug], 1,,

 [[Starting parse
 Entering state 0
 Reducing stack by rule 1 (line 30):
 [[Starting parse
 Entering state 0
 Reducing stack by rule 1 (line 30):


@@ -1303,7 +1454,7 @@ AT_CLEANUP
 # -------------------------------------------
 m4_define([AT_CHECK_ACTION_LOCATIONS],
 [AT_SETUP([[@$ in ]$1[ implies %locations]])
 # -------------------------------------------
 m4_define([AT_CHECK_ACTION_LOCATIONS],
 [AT_SETUP([[@$ in ]$1[ implies %locations]])

-AT_BISON_OPTION_PUSHDEFS
+AT_BISON_OPTION_PUSHDEFS([%debug])

 AT_DATA_GRAMMAR([[input.y]],
 [[%code {
   #include <stdio.h>
 AT_DATA_GRAMMAR([[input.y]],
 [[%code {
   #include <stdio.h>


@@ -1330,11 +1481,7 @@ yylex (void)
 }
 
 ]AT_YYERROR_DEFINE[
 }
 
 ]AT_YYERROR_DEFINE[

-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 
 AT_BISON_CHECK([[-o input.c input.y]])
 ]])
 
 AT_BISON_CHECK([[-o input.c input.y]])


@@ -1366,7 +1513,7 @@ AT_CHECK_ACTION_LOCATIONS([[%printer]])
 m4_pushdef([AT_TEST],
 [AT_SETUP([[Qualified $$ in actions: $1]])
 
 m4_pushdef([AT_TEST],
 [AT_SETUP([[Qualified $$ in actions: $1]])
 

-AT_BISON_OPTION_PUSHDEFS([%skeleton "$1"])
+AT_BISON_OPTION_PUSHDEFS([%skeleton "$1" %debug])

 
 AT_DATA_GRAMMAR([[input.y]],
 [[%skeleton "$1"
 
 AT_DATA_GRAMMAR([[input.y]],
 [[%skeleton "$1"


@@ -1430,19 +1577,11 @@ float: UNTYPED INT
                                   EOF}]],
                                [[{UNTYPED, INT, EOF}]]),
                  [AT_VAL.ival = toknum * 10; AT_VAL.fval = toknum / 10.0;])[
                                   EOF}]],
                                [[{UNTYPED, INT, EOF}]]),
                  [AT_VAL.ival = toknum * 10; AT_VAL.fval = toknum / 10.0;])[

-int
-main (void)
-{]AT_SKEL_CC_IF([[
-  yy::parser p;
-  p.set_debug_level(1);
-  return p.parse ();]], [[
-  yydebug = 1;
-  return yyparse ();]])[
-}
+]AT_MAIN_DEFINE[

 ]])
 
 AT_FULL_COMPILE([[input]])
 ]])
 
 AT_FULL_COMPILE([[input]])

-AT_PARSER_CHECK([./input], 0, [], [stderr])
+AT_PARSER_CHECK([./input --debug], 0, [], [stderr])

 # Don't be too picky on the traces, GLR is not exactly the same.  Keep
 # only the lines from the printer.
 AT_CHECK([[sed -ne '/ival:/p' stderr]], 0,
 # Don't be too picky on the traces, GLR is not exactly the same.  Keep
 # only the lines from the printer.
 AT_CHECK([[sed -ne '/ival:/p' stderr]], 0,


@@ -1468,115 +1607,6 @@ AT_TEST([glr.cc])
 
 m4_popdef([AT_TEST])
 
 
 m4_popdef([AT_TEST])
 

-## ----------------------------------------------- ##
-## Fix user actions without a trailing semicolon.  ##
-## ----------------------------------------------- ##
-
-AT_SETUP([[Fix user actions without a trailing semicolon]])
-
-# This feature is undocumented, but we accidentally broke it in 2.3a,
-# and there was a complaint at:
-# <http://lists.gnu.org/archive/html/bug-bison/2008-11/msg00001.html>.
-AT_BISON_OPTION_PUSHDEFS
-AT_DATA([input.y],
-[[%%
-start: test2 test1 test0 testc;
-
-test2
-: 'a' { semi;                   /* TEST:N:2 */ }
-| 'b' { if (0) {no_semi}        /* TEST:N:2 */ }
-| 'c' { if (0) {semi;}          /* TEST:N:2 */ }
-| 'd' { semi;   no_semi         /* TEST:Y:2 */ }
-| 'e' { semi(); no_semi()       /* TEST:Y:2 */ }
-| 'f' { semi[]; no_semi[]       /* TEST:Y:2 */ }
-| 'g' { semi++; no_semi++       /* TEST:Y:2 */ }
-| 'h' { {no_semi} no_semi       /* TEST:Y:2 */ }
-| 'i' { {semi;}   no_semi       /* TEST:Y:2 */ }
-;
-test1
-  : 'a' { semi;                 // TEST:N:1 ;
-} | 'b' { if (0) {no_semi}      // TEST:N:1 ;
-} | 'c' { if (0) {semi;}        // TEST:N:1 ;
-} | 'd' { semi;   no_semi       // TEST:Y:1 ;
-} | 'e' { semi(); no_semi()     // TEST:Y:1 ;
-} | 'f' { semi[]; no_semi[]     // TEST:Y:1 ;
-} | 'g' { semi++; no_semi++     // TEST:Y:1 ;
-} | 'h' { {no_semi} no_semi     // TEST:Y:1 ;
-} | 'i' { {semi;}   no_semi     // TEST:Y:1 ;
-} ;
-test0
-  : 'a' { semi;                 // TEST:N:1 {}
-} | 'b' { if (0) {no_semi}      // TEST:N:1 {}
-} | 'c' { if (0) {semi;}        // TEST:N:1 {}
-} | 'd' { semi;   no_semi       // TEST:Y:1 {}
-} | 'e' { semi(); no_semi()     // TEST:Y:1 {}
-} | 'f' { semi[]; no_semi[]     // TEST:Y:1 {}
-} | 'g' { semi++; no_semi++     // TEST:Y:1 {}
-} | 'h' { {no_semi} no_semi     // TEST:Y:1 {}
-} | 'i' { {semi;}   no_semi     // TEST:Y:1 {}
-} ;
-
-testc
-: 'a' {
-#define TEST_MACRO_N \
-[]"broken\" $ @ $$ @$ [];\
-string;"}
-| 'b' {
-no_semi
-#define TEST_MACRO_N \
-[]"broken\" $ @ $$ @$ [];\
-string;"}
-]])
-AT_BISON_OPTION_POPDEFS
-
-AT_BISON_CHECK([[-o input.c input.y]], [0], [],
-[[input.y:8.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:8.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:9.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:9.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:10.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:10.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:11.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:11.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:12.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:12.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:13.48: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:13.48: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:20.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:20.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:21.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:21.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:22.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:22.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:23.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:23.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:24.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:24.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:25.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:25.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:31.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:31.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:32.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:32.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:33.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:33.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:34.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:34.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:35.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:35.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-input.y:36.1: warning: a ';' might be needed at the end of action code [-Wdeprecated]
-input.y:36.1: warning: future versions of Bison will not add the ';' [-Wdeprecated]
-]])
-
-AT_MATCHES_CHECK([input.c], [[/\* TEST:N:2 \*/ \}$]],       [[3]])
-AT_MATCHES_CHECK([input.c], [[/\* TEST:Y:2 \*/ ;\}$]],      [[6]])
-AT_MATCHES_CHECK([input.c], [[// TEST:N:1 [;{}]*\n\}$]],    [[6]])
-AT_MATCHES_CHECK([input.c], [[// TEST:Y:1 [;{}]*\n;\}$]],  [[12]])
-AT_MATCHES_CHECK([input.c], [[#define TEST_MACRO_N \\\n\[\]"broken\\" \$ \@ \$\$ \@\$ \[\];\\\nstring;"\}]], [[2]])
-
-AT_CLEANUP
-
-

 ## -------------------------------------------------- ##
 ## Destroying lookahead assigned by semantic action.  ##
 ## -------------------------------------------------- ##
 ## -------------------------------------------------- ##
 ## Destroying lookahead assigned by semantic action.  ##
 ## -------------------------------------------------- ##


@@ -1611,7 +1641,7 @@ AT_DATA_GRAMMAR([input.y],
 // that has set yychar might not always return normally.  Instead,
 // skeletons must translate before every use of yytoken.
 start: 'a' accept { USE($1); } ;
 // that has set yychar might not always return normally.  Instead,
 // skeletons must translate before every use of yytoken.
 start: 'a' accept { USE($1); } ;

-accept: /*empty*/ {
+accept: %empty {

   assert (yychar == YYEMPTY);
   yychar = 'b';
   YYACCEPT;
   assert (yychar == YYEMPTY);
   yychar = 'b';
   YYACCEPT;


@@ -1620,11 +1650,7 @@ accept: /*empty*/ {
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["a"])[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["a"])[

-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 AT_BISON_CHECK([[-o input.c input.y]])
 ]])
 AT_BISON_OPTION_POPDEFS
 AT_BISON_CHECK([[-o input.c input.y]])


@@ -1642,7 +1668,7 @@ AT_CLEANUP
 
 AT_SETUP([[YYBACKUP]])
 
 
 AT_SETUP([[YYBACKUP]])
 

-AT_BISON_OPTION_PUSHDEFS([%pure-parser])
+AT_BISON_OPTION_PUSHDEFS([%pure-parser %debug])

 
 AT_DATA_GRAMMAR([input.y],
 [[
 
 AT_DATA_GRAMMAR([input.y],
 [[


@@ -1671,13 +1697,7 @@ exp:
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["bcd"], [*lvalp = (toknum + 1) * 10])[
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["bcd"], [*lvalp = (toknum + 1) * 10])[

-
-int
-main (void)
-{
-  yydebug = !!getenv("YYDEBUG");
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[

 ]])
 AT_BISON_OPTION_POPDEFS
 
 ]])
 AT_BISON_OPTION_POPDEFS