maint: update gnu-web-doc-update.

[bison.git] / tests / input.at

diff --git a/tests/input.at b/tests/input.at
index 6aeb258cbc6ca36e7e7c7c967c226f38eed6fa2e..836ff6d64ff5fdd22587bce694b03a04af5753ce 100644 (file)
--- a/tests/input.at
+++ b/tests/input.at
@@ -1,6 +1,6 @@
 # Checking the Bison scanner.                    -*- Autotest -*-
 # Checking the Bison scanner.                    -*- Autotest -*-

-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation,
-# Inc.
+
+# Copyright (C) 2002-2012 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


@@ -32,9 +32,9 @@ exp: { $$ = $1 ; };
 exp: { @$ = @1 ; };
 ]])
 
 exp: { @$ = @1 ; };
 ]])
 

-AT_CHECK([bison input.y], [1], [],
-[[input.y:2.13-14: integer out of range: `$1'
-input.y:3.13-14: integer out of range: `@1'
+AT_BISON_CHECK([input.y], [1], [],
+[[input.y:2.13-14: integer out of range: '$1'
+input.y:3.13-14: integer out of range: '@1'

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -57,9 +57,9 @@ exp: foo { $$; } foo { $2; } foo
    ;
 ]])
 
    ;
 ]])
 

-AT_CHECK([bison input.y], [1], [],
-[[input.y:5.12-13: $$ for the midrule at $2 of `exp' has no declared type
-input.y:5.24-25: $2 of `exp' has no declared type
+AT_BISON_CHECK([input.y], [1], [],
+[[input.y:5.12-13: $$ for the midrule at $2 of 'exp' has no declared type
+input.y:5.24-25: $2 of 'exp' has no declared type

 input.y:5.6-32: warning: type clash on default action: <bar> != <>
 input.y:6.6-8: warning: type clash on default action: <bar> != <>
 input.y:7.5: warning: empty rule for typed nonterminal, and no action
 input.y:5.6-32: warning: type clash on default action: <bar> != <>
 input.y:6.6-8: warning: type clash on default action: <bar> != <>
 input.y:7.5: warning: empty rule for typed nonterminal, and no action


@@ -69,7 +69,7 @@ AT_CLEANUP
 
 
 # _AT_UNUSED_VALUES_DECLARATIONS()
 
 
 # _AT_UNUSED_VALUES_DECLARATIONS()

-# --------------------------------------------
+# --------------------------------

 # Generate the token, type, and destructor
 # declarations for the unused values tests.
 
 # Generate the token, type, and destructor
 # declarations for the unused values tests.
 


@@ -97,16 +97,16 @@ m4_ifval($1, [
 ], [_AT_UNUSED_VALUES_DECLARATIONS
 ])[[%%
 start:
 ], [_AT_UNUSED_VALUES_DECLARATIONS
 ])[[%%
 start:

-  'a' a { $]2[ } | 'b' b { $]2[ } | 'c' c { $]2[ } | 'd' d { $]2[ } | 'e' e { $]2[ }
-| 'f' f { $]2[ } | 'g' g { $]2[ } | 'h' h { $]2[ } | 'i' i { $]2[ } | 'j' j { $]2[ }
-| 'k' k { $]2[ } | 'l' l { $]2[ }
+  'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
+| 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
+| 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }

 ;
 
 a: INT | INT { } INT { } INT { };
 b: INT | /* empty */;
 ;
 
 a: INT | INT { } INT { } INT { };
 b: INT | /* empty */;

-c: INT | INT { $]1[ } INT { $<integer>2 } INT { $<integer>4 };
-d: INT | INT { } INT { $]1[ } INT { $<integer>2 };
-e: INT | INT { } INT {  } INT { $]1[ };
+c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
+d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
+e: INT | INT { } INT {  } INT { $]1[; };

 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };


@@ -117,24 +117,24 @@ l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<
 _AT_UNUSED_VALUES_DECLARATIONS])
 )
 
 _AT_UNUSED_VALUES_DECLARATIONS])
 )
 

-AT_CHECK([bison]m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
+AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],

 [[input.y:11.10-32: warning: unset value: $]$[
 input.y:11.10-32: warning: unused value: $]1[
 input.y:11.10-32: warning: unused value: $]3[
 input.y:11.10-32: warning: unused value: $]5[
 input.y:12.9: warning: empty rule for typed nonterminal, and no action
 [[input.y:11.10-32: warning: unset value: $]$[
 input.y:11.10-32: warning: unused value: $]1[
 input.y:11.10-32: warning: unused value: $]3[
 input.y:11.10-32: warning: unused value: $]5[
 input.y:12.9: warning: empty rule for typed nonterminal, and no action

-]]m4_ifval($2, [[[input.y:13.14-19: warning: unset value: $$
-input.y:13.25-39: warning: unset value: $$
-]]])[[input.y:13.10-59: warning: unset value: $]$[
-input.y:13.10-59: warning: unused value: $]3[
-input.y:13.10-59: warning: unused value: $]5[
+]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
+input.y:13.26-41: warning: unset value: $$
+]]])[[input.y:13.10-62: warning: unset value: $]$[
+input.y:13.10-62: warning: unused value: $]3[
+input.y:13.10-62: warning: unused value: $]5[

 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$

-]]])[[input.y:14.10-47: warning: unset value: $]$[
-input.y:14.10-47: warning: unused value: $]3[
-input.y:14.10-47: warning: unused value: $]5[
-input.y:15.10-36: warning: unset value: $]$[
-input.y:15.10-36: warning: unused value: $]3[
-input.y:15.10-36: warning: unused value: $]5[
+]]])[[input.y:14.10-49: warning: unset value: $]$[
+input.y:14.10-49: warning: unused value: $]3[
+input.y:14.10-49: warning: unused value: $]5[
+input.y:15.10-37: warning: unset value: $]$[
+input.y:15.10-37: warning: unused value: $]3[
+input.y:15.10-37: warning: unused value: $]5[

 input.y:17.10-58: warning: unset value: $]$[
 input.y:17.10-58: warning: unused value: $]1[
 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
 input.y:17.10-58: warning: unset value: $]$[
 input.y:17.10-58: warning: unused value: $]1[
 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[


@@ -182,53 +182,53 @@ AT_SETUP([Default %printer and %destructor redeclared])
 
 AT_DATA([[input.y]],
 [[%destructor { destroy ($$); } <*> <*>
 
 AT_DATA([[input.y]],
 [[%destructor { destroy ($$); } <*> <*>

-%printer { destroy ($$); } <*> <*>
+%printer { print ($$); } <*> <*>

 
 %destructor { destroy ($$); } <*>
 
 %destructor { destroy ($$); } <*>

-%printer { destroy ($$); } <*>
+%printer { print ($$); } <*>

 
 %destructor { destroy ($$); } <> <>
 
 %destructor { destroy ($$); } <> <>

-%printer { destroy ($$); } <> <>
+%printer { print ($$); } <> <>

 
 %destructor { destroy ($$); } <>
 
 %destructor { destroy ($$); } <>

-%printer { destroy ($$); } <>
+%printer { print ($$); } <>

 
 %%
 
 start: ;
 
 %destructor { destroy ($$); } <*>;
 
 %%
 
 start: ;
 
 %destructor { destroy ($$); } <*>;

-%printer { destroy ($$); } <*>;
+%printer { print ($$); } <*>;

 
 %destructor { destroy ($$); } <>;
 
 %destructor { destroy ($$); } <>;

-%printer { destroy ($$); } <>;
+%printer { print ($$); } <>;

 ]])
 
 ]])
 

-AT_CHECK([bison input.y], [1], [],
+AT_BISON_CHECK([input.y], [1], [],

 [[input.y:1.13-29: redeclaration for default tagged %destructor
 input.y:1.13-29: previous declaration
 [[input.y:1.13-29: redeclaration for default tagged %destructor
 input.y:1.13-29: previous declaration

-input.y:2.10-26: redeclaration for default tagged %printer
-input.y:2.10-26: previous declaration
+input.y:2.10-24: redeclaration for default tagged %printer
+input.y:2.10-24: previous declaration

 input.y:4.13-29: redeclaration for default tagged %destructor
 input.y:1.13-29: previous declaration
 input.y:4.13-29: redeclaration for default tagged %destructor
 input.y:1.13-29: previous declaration

-input.y:5.10-26: redeclaration for default tagged %printer
-input.y:2.10-26: previous declaration
+input.y:5.10-24: redeclaration for default tagged %printer
+input.y:2.10-24: previous declaration

 input.y:7.13-29: redeclaration for default tagless %destructor
 input.y:7.13-29: previous declaration
 input.y:7.13-29: redeclaration for default tagless %destructor
 input.y:7.13-29: previous declaration

-input.y:8.10-26: redeclaration for default tagless %printer
-input.y:8.10-26: previous declaration
+input.y:8.10-24: redeclaration for default tagless %printer
+input.y:8.10-24: previous declaration

 input.y:10.13-29: redeclaration for default tagless %destructor
 input.y:7.13-29: previous declaration
 input.y:10.13-29: redeclaration for default tagless %destructor
 input.y:7.13-29: previous declaration

-input.y:11.10-26: redeclaration for default tagless %printer
-input.y:8.10-26: previous declaration
+input.y:11.10-24: redeclaration for default tagless %printer
+input.y:8.10-24: previous declaration

 input.y:17.13-29: redeclaration for default tagged %destructor
 input.y:4.13-29: previous declaration
 input.y:17.13-29: redeclaration for default tagged %destructor
 input.y:4.13-29: previous declaration

-input.y:18.10-26: redeclaration for default tagged %printer
-input.y:5.10-26: previous declaration
+input.y:18.10-24: redeclaration for default tagged %printer
+input.y:5.10-24: previous declaration

 input.y:20.13-29: redeclaration for default tagless %destructor
 input.y:10.13-29: previous declaration
 input.y:20.13-29: redeclaration for default tagless %destructor
 input.y:10.13-29: previous declaration

-input.y:21.10-26: redeclaration for default tagless %printer
-input.y:11.10-26: previous declaration
+input.y:21.10-24: redeclaration for default tagless %printer
+input.y:11.10-24: previous declaration

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -242,36 +242,36 @@ AT_SETUP([Per-type %printer and %destructor redeclared])
 
 AT_DATA([[input.y]],
 [[%destructor { destroy ($$); } <field1> <field2>
 
 AT_DATA([[input.y]],
 [[%destructor { destroy ($$); } <field1> <field2>

-%printer { destroy ($$); } <field1> <field2>
+%printer { print ($$); } <field1> <field2>

 
 %destructor { destroy ($$); } <field1> <field1>
 
 %destructor { destroy ($$); } <field1> <field1>

-%printer { destroy ($$); } <field2> <field2>
+%printer { print ($$); } <field2> <field2>

 
 %%
 
 start: ;
 
 %destructor { destroy ($$); } <field2> <field1>;
 
 %%
 
 start: ;
 
 %destructor { destroy ($$); } <field2> <field1>;

-%printer { destroy ($$); } <field2> <field1>;
+%printer { print ($$); } <field2> <field1>;

 ]])
 
 ]])
 

-AT_CHECK([bison input.y], [1], [],
+AT_BISON_CHECK([input.y], [1], [],

 [[input.y:4.13-29: %destructor redeclaration for <field1>
 input.y:1.13-29: previous declaration
 input.y:4.13-29: %destructor redeclaration for <field1>
 input.y:4.13-29: previous declaration
 [[input.y:4.13-29: %destructor redeclaration for <field1>
 input.y:1.13-29: previous declaration
 input.y:4.13-29: %destructor redeclaration for <field1>
 input.y:4.13-29: previous declaration

-input.y:5.10-26: %printer redeclaration for <field2>
-input.y:2.10-26: previous declaration
-input.y:5.10-26: %printer redeclaration for <field2>
-input.y:5.10-26: previous declaration
+input.y:5.10-24: %printer redeclaration for <field2>
+input.y:2.10-24: previous declaration
+input.y:5.10-24: %printer redeclaration for <field2>
+input.y:5.10-24: previous declaration

 input.y:11.13-29: %destructor redeclaration for <field1>
 input.y:4.13-29: previous declaration
 input.y:11.13-29: %destructor redeclaration for <field2>
 input.y:1.13-29: previous declaration
 input.y:11.13-29: %destructor redeclaration for <field1>
 input.y:4.13-29: previous declaration
 input.y:11.13-29: %destructor redeclaration for <field2>
 input.y:1.13-29: previous declaration

-input.y:12.10-26: %printer redeclaration for <field1>
-input.y:2.10-26: previous declaration
-input.y:12.10-26: %printer redeclaration for <field2>
-input.y:5.10-26: previous declaration
+input.y:12.10-24: %printer redeclaration for <field1>
+input.y:2.10-24: previous declaration
+input.y:12.10-24: %printer redeclaration for <field2>
+input.y:5.10-24: previous declaration

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -294,7 +294,7 @@ end: { } ;
 tagged: { } ;
 ]])
 
 tagged: { } ;
 ]])
 

-AT_CHECK([bison input.y], [0], [],
+AT_BISON_CHECK([input.y], [0], [],

 [[input.y:6.8-45: warning: unset value: $$
 input.y:6.8-45: warning: unused value: $2
 input.y:7.6-8: warning: unset value: $$
 [[input.y:6.8-45: warning: unset value: $$
 input.y:6.8-45: warning: unused value: $2
 input.y:7.6-8: warning: unset value: $$


@@ -311,7 +311,7 @@ end: { } ;
 tagged: { } ;
 ]])
 
 tagged: { } ;
 ]])
 

-AT_CHECK([bison input.y], [0], [],
+AT_BISON_CHECK([input.y], [0], [],

 [[input.y:6.8-45: warning: unused value: $4
 input.y:8.9-11: warning: unset value: $$
 ]])
 [[input.y:6.8-45: warning: unused value: $4
 input.y:8.9-11: warning: unset value: $$
 ]])


@@ -335,7 +335,7 @@ start: end end { $1; } ;
 end: { }  ;
 ]])
 
 end: { }  ;
 ]])
 

-AT_CHECK([bison input.y], [0], [],
+AT_BISON_CHECK([input.y], [0], [],

 [[input.y:6.8-22: warning: unset value: $$
 input.y:6.8-22: warning: unused value: $2
 input.y:7.6-8: warning: unset value: $$
 [[input.y:6.8-22: warning: unset value: $$
 input.y:6.8-22: warning: unused value: $2
 input.y:7.6-8: warning: unset value: $$


@@ -367,7 +367,7 @@ AT_DATA([input.y],
 exp: foo;
 ]])
 
 exp: foo;
 ]])
 

-AT_CHECK([bison input.y], [1], [],
+AT_BISON_CHECK([input.y], [1], [],

 [[input.y:8.7-11: %type redeclaration for foo
 input.y:3.7-11: previous declaration
 input.y:10.13-17: %destructor redeclaration for foo
 [[input.y:8.7-11: %type redeclaration for foo
 input.y:3.7-11: previous declaration
 input.y:10.13-17: %destructor redeclaration for foo


@@ -391,9 +391,9 @@ AT_CLEANUP
 
 AT_SETUP([Torturing the Scanner])
 
 
 AT_SETUP([Torturing the Scanner])
 

-
+AT_BISON_OPTION_PUSHDEFS

 AT_DATA([input.y], [])
 AT_DATA([input.y], [])

-AT_CHECK([bison input.y], [1], [],
+AT_BISON_CHECK([input.y], [1], [],

 [[input.y:1.1: syntax error, unexpected end of file
 ]])
 
 [[input.y:1.1: syntax error, unexpected end of file
 ]])
 


@@ -401,7 +401,7 @@ AT_CHECK([bison input.y], [1], [],
 AT_DATA([input.y],
 [{}
 ])
 AT_DATA([input.y],
 [{}
 ])

-AT_CHECK([bison input.y], [1], [],
+AT_BISON_CHECK([input.y], [1], [],

 [[input.y:1.1-2: syntax error, unexpected {...}
 ]])
 
 [[input.y:1.1-2: syntax error, unexpected {...}
 ]])
 


@@ -442,6 +442,7 @@ char apostrophe = '\'';
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include <stdio.h>
 #include <stdlib.h>

+#include <assert.h>

 %}
 /* %{ and %} can be here too. */
 
 %}
 /* %{ and %} can be here too. */
 


@@ -468,8 +469,8 @@ char quote[] = "@:>@@:>@,";
 %}
 
 %{
 %}
 
 %{

-static void yyerror (const char *s);
-static int yylex (void);
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE[

 %}
 
 %type <ival> '@<:@'
 %}
 
 %type <ival> '@<:@'


@@ -501,7 +502,7 @@ value_as_yystype (value val)
   res.ival = val;
   return res;
 }
   res.ival = val;
   return res;
 }

-
+]AT_YYERROR_DEFINE[

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


@@ -509,20 +510,13 @@ yylex (void)
 #output "; /* "
   */
   static size_t toknum;
 #output "; /* "
   */
   static size_t toknum;

-  if (! (toknum < sizeof input))
-    abort ();
+  assert (toknum < sizeof input);

   yylval = value_as_yystype (input[toknum]);
   return input[toknum++];
 }
   yylval = value_as_yystype (input[toknum]);
   return input[toknum++];
 }

-
-static void
-yyerror (const char *msg)
-{
-  fprintf (stderr, "%s\n", msg);
-}

 ]])
 
 ]])
 

-# Pacify Emacs'font-lock-mode: "
+# Pacify Emacs' font-lock-mode: "

 
 AT_DATA([main.c],
 [[typedef int value;
 
 AT_DATA([main.c],
 [[typedef int value;


@@ -536,10 +530,11 @@ main (void)
   return yyparse ();
 }
 ]])
   return yyparse ();
 }
 ]])

+AT_BISON_OPTION_POPDEFS

 
 

-AT_CHECK([bison -d -v -o input.c input.y])
-AT_COMPILE([input.o], [-c input.c])
-AT_COMPILE([main.o], [-c main.c])
+AT_BISON_CHECK([-d -v -o input.c input.y])
+AT_COMPILE([input.o])
+AT_COMPILE([main.o])

 AT_COMPILE([input], [input.o main.o])
 AT_PARSER_CHECK([./input], 0,
 [[[@<:@],
 AT_COMPILE([input], [input.o main.o])
 AT_PARSER_CHECK([./input], 0,
 [[[@<:@],


@@ -568,7 +563,7 @@ exp: "MY TOKEN";
 %%
 ]])
 
 %%
 ]])
 

-AT_CHECK([bison -o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y])

 
 AT_CLEANUP
 
 
 AT_CLEANUP
 


@@ -584,7 +579,7 @@ AT_DATA_GRAMMAR([input.y],
 %%
 empty_file:;
 ]])
 %%
 empty_file:;
 ]])

-AT_CHECK([bison -o input.c input.y], $2, [], ignore)
+AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)

 AT_CLEANUP
 ])
 
 AT_CLEANUP
 ])
 


@@ -610,7 +605,111 @@ start: 'a';
 %%
 ]])
 
 %%
 ]])
 

-AT_CHECK([bison -o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y])
+
+AT_CLEANUP
+
+
+## -------------- ##
+## Symbol names.  ##
+## -------------- ##
+
+AT_SETUP([Symbols])
+
+AT_BISON_OPTION_PUSHDEFS
+AT_DATA_GRAMMAR([input.y],
+[[%token WITH-DASH
+%token WITHOUT_DASH "WITHOUT-DASH"
+%token WITH.PERIOD
+%token WITHOUT_PERIOD "WITHOUT.PERIOD"
+%code {
+  ]AT_YYERROR_DECLARE[
+  ]AT_YYLEX_DECLARE[
+}
+%%
+start: with-dash without_dash with.period without_period;
+with-dash: WITH-DASH;
+without_dash: "WITHOUT-DASH";
+with.period: WITH.PERIOD;
+without_period: "WITHOUT.PERIOD";
+%%
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE[
+]])
+AT_BISON_OPTION_POPDEFS
+
+# POSIX Yacc accept periods, but not dashes.
+AT_BISON_CHECK([--yacc input.y], [1], [],
+[[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
+input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
+]])
+
+# So warn about them.
+AT_BISON_CHECK([-Wyacc input.y], [], [],
+[[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
+input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
+]])
+
+# Dashes are fine for GNU Bison.
+AT_BISON_CHECK([-o input.c input.y])
+
+# Make sure we don't export silly token identifiers with periods or dashes.
+AT_COMPILE([input.o])
+
+
+# Periods are genuine letters, they can start identifiers.
+# Digits and dashes cannot.
+AT_DATA_GRAMMAR([input.y],
+[[%token .GOOD
+         -GOOD
+         1NV4L1D
+         -123
+%%
+start: .GOOD GOOD
+]])
+AT_BISON_CHECK([-o input.c input.y], [1], [],
+[[input.y:10.10: invalid character: '-'
+input.y:11.10-16: invalid identifier: '1NV4L1D'
+input.y:12.10: invalid character: '-'
+]])
+
+AT_CLEANUP
+
+
+## ----------------- ##
+## Numbered tokens.  ##
+## ----------------- ##
+
+AT_SETUP([Numbered tokens])
+
+AT_DATA_GRAMMAR([redecl.y],
+[[%token DECIMAL_1     11259375
+         HEXADECIMAL_1 0xabcdef
+         HEXADECIMAL_2 0xFEDCBA
+         DECIMAL_2     16702650
+%%
+start: DECIMAL_1 HEXADECIMAL_2;
+]])
+
+AT_BISON_CHECK([redecl.y], [1], [],
+[[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
+redecl.y:9.8-16: previous declaration for DECIMAL_1
+redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
+redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
+]])
+
+AT_DATA_GRAMMAR([too-large.y],
+[[%token TOO_LARGE_DEC 999999999999999999999
+         TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
+%%
+start: TOO_LARGE_DEC TOO_LARGE_HEX
+%%
+]])
+
+AT_BISON_CHECK([too-large.y], [1], [],
+[[too-large.y:9.22-42: integer out of range: '999999999999999999999'
+too-large.y:10.24-44: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
+]])

 
 AT_CLEANUP
 
 
 AT_CLEANUP
 


@@ -648,12 +747,12 @@ start: ;
 %destructor { free ($$)
 ]])
 
 %destructor { free ($$)
 ]])
 

-AT_CHECK([bison -o input.c input.y], 1, [],
-[[input.y:1.10-2.0: missing `"' at end of line
-input.y:4.10-5.0: missing `'' at end of line
-input.y:14.11-15.0: missing `'' at end of line
-input.y:16.11-17.0: missing `"' at end of line
-input.y:19.13-20.0: missing `}' at end of file
+AT_BISON_CHECK([-o input.c input.y], 1, [],
+[[input.y:1.10-2.0: missing '"' at end of line
+input.y:4.10-5.0: missing "'" at end of line
+input.y:14.11-15.0: missing "'" at end of line
+input.y:16.11-17.0: missing '"' at end of line
+input.y:19.13-20.0: missing '}' at end of file

 input.y:20.1: syntax error, unexpected end of file
 ]])
 
 input.y:20.1: syntax error, unexpected end of file
 ]])
 


@@ -676,7 +775,7 @@ start: false_start ;
 %start start;
 ]])
 
 %start start;
 ]])
 

-AT_CHECK([bison -o input.c input.y])
+AT_BISON_CHECK([-o input.c input.y])

 
 AT_CLEANUP
 
 
 AT_CLEANUP
 


@@ -695,13 +794,33 @@ start: PREC %prec PREC ;
 PREC: ;
 ]])
 
 PREC: ;
 ]])
 

-AT_CHECK([bison input.y], [1], [],
+AT_BISON_CHECK([input.y], [1], [],

 [[input.y:3.1-4: rule given for PREC, which is a token
 ]])
 
 AT_CLEANUP
 
 
 [[input.y:3.1-4: rule given for PREC, which is a token
 ]])
 
 AT_CLEANUP
 
 

+## ------------------------------- ##
+## %prec's token must be defined.  ##
+## ------------------------------- ##
+
+AT_SETUP([[%prec's token must be defined]])
+
+# According to POSIX, a %prec token must be defined separately.
+
+AT_DATA([[input.y]],
+[[%%
+start: %prec PREC ;
+]])
+
+AT_BISON_CHECK([[input.y]], [[0]], [],
+[[input.y:2.8-17: warning: token for %prec is not defined: PREC
+]])
+
+AT_CLEANUP
+
+

 ## -------------------------------- ##
 ## Reject unused %code qualifiers.  ##
 ## -------------------------------- ##
 ## -------------------------------- ##
 ## Reject unused %code qualifiers.  ##
 ## -------------------------------- ##


@@ -716,11 +835,11 @@ AT_DATA([input-c.y],
 %%
 start: ;
 ]])
 %%
 start: ;
 ]])

-AT_CHECK([[bison input-c.y]], [0], [],
-[[input-c.y:1.7: warning: %code qualifier `q' is not used
-input-c.y:2.7-9: warning: %code qualifier `bad' is not used
-input-c.y:3.7-9: warning: %code qualifier `bad' is not used
-input-c.y:4.7-12: warning: %code qualifier `format' is not used
+AT_BISON_CHECK([[input-c.y]], [[1]], [],
+[[input-c.y:1.7: %code qualifier 'q' is not used
+input-c.y:2.7-9: %code qualifier 'bad' is not used
+input-c.y:3.7-9: %code qualifier 'bad' is not used
+input-c.y:4.7-12: %code qualifier 'format' is not used

 ]])
 
 AT_DATA([input-c-glr.y],
 ]])
 
 AT_DATA([input-c-glr.y],


@@ -730,10 +849,10 @@ AT_DATA([input-c-glr.y],
 %%
 start: ;
 ]])
 %%
 start: ;
 ]])

-AT_CHECK([[bison input-c-glr.y]], [0], [],
-[[input-c-glr.y:1.7: warning: %code qualifier `q' is not used
-input-c-glr.y:2.7-9: warning: %code qualifier `bad' is not used
-input-c-glr.y:3.8-10: warning: %code qualifier `bad' is not used
+AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
+[[input-c-glr.y:1.7: %code qualifier 'q' is not used
+input-c-glr.y:2.7-9: %code qualifier 'bad' is not used
+input-c-glr.y:3.8-10: %code qualifier 'bad' is not used

 ]])
 
 AT_DATA([input-c++.y],
 ]])
 
 AT_DATA([input-c++.y],


@@ -743,10 +862,10 @@ AT_DATA([input-c++.y],
 %%
 start: ;
 ]])
 %%
 start: ;
 ]])

-AT_CHECK([[bison input-c++.y]], [0], [],
-[[input-c++.y:1.7: warning: %code qualifier `q' is not used
-input-c++.y:2.7-9: warning: %code qualifier `bad' is not used
-input-c++.y:3.8: warning: %code qualifier `q' is not used
+AT_BISON_CHECK([[input-c++.y]], [[1]], [],
+[[input-c++.y:1.7: %code qualifier 'q' is not used
+input-c++.y:2.7-9: %code qualifier 'bad' is not used
+input-c++.y:3.8: %code qualifier 'q' is not used

 ]])
 
 AT_DATA([input-c++-glr.y],
 ]])
 
 AT_DATA([input-c++-glr.y],


@@ -756,10 +875,10 @@ AT_DATA([input-c++-glr.y],
 %%
 start: ;
 ]])
 %%
 start: ;
 ]])

-AT_CHECK([[bison input-c++-glr.y]], [0], [],
-[[input-c++-glr.y:1.7-9: warning: %code qualifier `bad' is not used
-input-c++-glr.y:2.7: warning: %code qualifier `q' is not used
-input-c++-glr.y:3.7: warning: %code qualifier `q' is not used
+AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
+[[input-c++-glr.y:1.7-9: %code qualifier 'bad' is not used
+input-c++-glr.y:2.7: %code qualifier 'q' is not used
+input-c++-glr.y:3.7: %code qualifier 'q' is not used

 ]])
 
 AT_DATA([special-char-@@.y],
 ]])
 
 AT_DATA([special-char-@@.y],


@@ -769,10 +888,10 @@ AT_DATA([special-char-@@.y],
 %%
 start: ;
 ]])
 %%
 start: ;
 ]])

-AT_CHECK([[bison special-char-@@.y]], [0], [],
-[[special-char-@@.y:1.7-9: warning: %code qualifier `bad' is not used
-special-char-@@.y:2.7: warning: %code qualifier `q' is not used
-special-char-@@.y:3.7: warning: %code qualifier `q' is not used
+AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
+[[special-char-@@.y:1.7-9: %code qualifier 'bad' is not used
+special-char-@@.y:2.7: %code qualifier 'q' is not used
+special-char-@@.y:3.7: %code qualifier 'q' is not used

 ]])
 
 AT_DATA([special-char-@:>@.y],
 ]])
 
 AT_DATA([special-char-@:>@.y],


@@ -782,10 +901,10 @@ AT_DATA([special-char-@:>@.y],
 %%
 start: ;
 ]])
 %%
 start: ;
 ]])

-AT_CHECK([[bison special-char-@:>@.y]], [0], [],
-[[special-char-@:>@.y:1.7-9: warning: %code qualifier `bad' is not used
-special-char-@:>@.y:2.7: warning: %code qualifier `q' is not used
-special-char-@:>@.y:3.7: warning: %code qualifier `q' is not used
+AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
+[[special-char-@:>@.y:1.7-9: %code qualifier 'bad' is not used
+special-char-@:>@.y:2.7: %code qualifier 'q' is not used
+special-char-@:>@.y:3.7: %code qualifier 'q' is not used

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -797,7 +916,7 @@ AT_CLEANUP
 
 AT_SETUP([%define errors])
 
 
 AT_SETUP([%define errors])
 

-AT_DATA([input.y],
+AT_DATA([input-redefined.y],

 [[%define var "value1"
 %define var "value1"
  %define var "value2"
 [[%define var "value1"
 %define var "value1"
  %define var "value2"


@@ -807,25 +926,84 @@ AT_DATA([input.y],
 start: ;
 ]])
 
 start: ;
 ]])
 

-AT_CHECK([[bison input.y]], [0], [],
-[[input.y:2.9-11: warning: %define variable `var' redefined
-input.y:1.9-11: warning: previous definition
-input.y:3.10-12: warning: %define variable `var' redefined
-input.y:2.9-11: warning: previous definition
-input.y:1.9-11: warning: %define variable `var' is not used
-input.y:2.9-11: warning: %define variable `var' is not used
-input.y:3.10-12: warning: %define variable `var' is not used
-input.y:4.9-16: warning: %define variable `special1' is not used
-input.y:5.9-16: warning: %define variable `special2' is not used
+AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
+[[input-redefined.y:2.9-11: %define variable 'var' redefined
+input-redefined.y:1.9-11: previous definition
+input-redefined.y:3.10-12: %define variable 'var' redefined
+input-redefined.y:2.9-11: previous definition
+]])
+
+AT_DATA([input-unused.y],
+[[%define var "value"
+%%
+start: ;
+]])
+
+AT_BISON_CHECK([[input-unused.y]], [[1]], [],
+[[input-unused.y:1.9-11: %define variable 'var' is not used
+]])
+
+AT_CLEANUP
+
+
+## ----------------------------------- ##
+## %define, --define, --force-define.  ##
+## ----------------------------------- ##
+
+AT_SETUP([[%define, --define, --force-define]])
+
+AT_DATA([[skel.c]],
+[[m4@&t@_divert_push(0)@
+@output(b4_parser_file_name@)@
+[var-dd: ]b4_percent_define_get([[var-dd]])[
+var-ff: ]b4_percent_define_get([[var-ff]])[
+var-dfg: ]b4_percent_define_get([[var-dfg]])[
+var-fd: ]b4_percent_define_get([[var-fd]])
+m4@&t@_divert_pop(0)
+]])
+AT_DATA([[input.y]],
+[[%define var-dfg "gram"
+%%
+start: ;
+]])
+AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
+                 -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
+                 -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
+                 -Fvar-fd=cmd-f -Dvar-fd=cmd-d   \
+                 --skeleton ./skel.c input.y]])
+AT_CHECK([[cat input.tab.c]], [[0]],
+[[var-dd: cmd-d2
+var-ff: cmd-f2
+var-dfg: cmd-f
+var-fd: cmd-d
+]])
+
+AT_DATA([[input-dg.y]],
+[[%define var "gram"
+%%
+start: ;
+]])
+AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
+[[input-dg.y:1.9-11: %define variable 'var' redefined
+<command line>:2: previous definition
+]])
+
+AT_DATA([[input-unused.y]],
+[[%%
+start: ;
+]])
+AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
+[[<command line>:2: %define variable 'unused-d' is not used
+<command line>:3: %define variable 'unused-f' is not used

 ]])
 
 AT_CLEANUP
 
 ## --------------------------- ##
 ]])
 
 AT_CLEANUP
 
 ## --------------------------- ##

-## Boolean %define variables.  ##
+## %define Boolean variables.  ##

 ## --------------------------- ##
 
 ## --------------------------- ##
 

-AT_SETUP([Boolean %define variables])
+AT_SETUP([[%define Boolean variables]])

 
 AT_DATA([Input.y],
 [[%language "Java"
 
 AT_DATA([Input.y],
 [[%language "Java"


@@ -835,8 +1013,359 @@ AT_DATA([Input.y],
 start: ;
 ]])
 
 start: ;
 ]])
 

-AT_CHECK([[bison Input.y]], [1], [],
-[[Input.y:2.9-14: invalid value for %define boolean variable `public'
+AT_BISON_CHECK([[Input.y]], [1], [],
+[[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
+]])
+
+AT_CLEANUP
+
+## ------------------------ ##
+## %define enum variables.  ##
+## ------------------------ ##
+
+AT_SETUP([[%define enum variables]])
+
+# Front-end.
+AT_DATA([[input.y]],
+[[%define lr.default-reductions bogus
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [[1]], [[]],
+[[input.y:1.9-29: invalid value for %define variable 'lr.default-reductions': 'bogus'
+input.y:1.9-29: accepted value: 'most'
+input.y:1.9-29: accepted value: 'consistent'
+input.y:1.9-29: accepted value: 'accepting'
+]])
+
+# Back-end.
+AT_DATA([[input.y]],
+[[%define api.push-pull neither
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [1], [],
+[[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
+input.y:1.9-21: accepted value: 'pull'
+input.y:1.9-21: accepted value: 'push'
+input.y:1.9-21: accepted value: 'both'
+]])
+
+AT_CLEANUP
+
+## -------------------------------- ##
+## %define backward compatibility.  ##
+## -------------------------------- ##
+
+AT_SETUP([[%define backward compatibility]])
+
+# The error messages tell us whether underscores in these variables are
+# being converted to dashes.
+
+AT_DATA([[input.y]],
+[[%define api.push_pull "neither"
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [1], [],
+[[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
+input.y:1.9-21: accepted value: 'pull'
+input.y:1.9-21: accepted value: 'push'
+input.y:1.9-21: accepted value: 'both'
+]])
+
+AT_DATA([[input.y]],
+[[%define lr.keep_unreachable_states maybe
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [1], [],
+[[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
+]])
+
+AT_DATA([[input.y]],
+[[%define foo_bar "baz"
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [[1]], [],
+[[input.y:1.9-15: %define variable 'foo_bar' is not used
+]])
+
+AT_CLEANUP
+
+## ------------------------- ##
+## Unused %define api.pure.  ##
+## ------------------------- ##
+
+AT_SETUP([[Unused %define api.pure]])
+
+# AT_CHECK_API_PURE(DECLS, VALUE)
+# -------------------------------
+# Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
+# are specified.
+m4_define([AT_CHECK_API_PURE],
+[
+AT_DATA([[input.y]],
+[[%define api.pure ]$2[
+]$1[
+%%
+start: ;
+]])
+
+AT_BISON_CHECK([[input.y]], [[1]], [],
+[[input.y:1.9-16: %define variable 'api.pure' is not used
+]])
+])
+
+AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
+AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
+AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
+AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
+AT_CHECK_API_PURE([[%language "java"]], [[true]])
+AT_CHECK_API_PURE([[%language "java"]], [[false]])
+
+AT_CLEANUP
+
+## -------------------------------- ##
+## C++ namespace reference errors.  ##
+## -------------------------------- ##
+
+AT_SETUP([[C++ namespace reference errors]])
+
+# AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
+# -------------------------------------------------------------
+# Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
+m4_define([AT_CHECK_NAMESPACE_ERROR],
+[
+AT_DATA([[input.y]],
+[[%language "C++"
+%defines
+%define namespace "]$1["
+%%
+start: ;
+]])
+
+AT_BISON_CHECK([[input.y]], [1], [],
+[m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
+[[input.y:3.9-17: ]b4_arg[
+]])])
+])
+
+AT_CHECK_NAMESPACE_ERROR([[]],
+                         [[namespace reference is empty]])
+AT_CHECK_NAMESPACE_ERROR([[                            ]],
+                         [[namespace reference is empty]])
+AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
+                         [[namespace reference has consecutive "::"]])
+AT_CHECK_NAMESPACE_ERROR([[foo::       ::bar]],
+                         [[namespace reference has consecutive "::"]])
+AT_CHECK_NAMESPACE_ERROR([[::::bar]],
+                         [[namespace reference has consecutive "::"]])
+AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
+                         [[namespace reference has consecutive "::"]])
+AT_CHECK_NAMESPACE_ERROR([[foo::bar::  ::]],
+                         [[namespace reference has consecutive "::"]],
+                         [[namespace reference has a trailing "::"]])
+AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
+                         [[namespace reference has a trailing "::"]])
+AT_CHECK_NAMESPACE_ERROR([[foo::bar::  ]],
+                         [[namespace reference has a trailing "::"]])
+AT_CHECK_NAMESPACE_ERROR([[::]],
+                         [[namespace reference has a trailing "::"]])
+
+AT_CLEANUP
+
+## ------------------------ ##
+## Bad character literals.  ##
+## ------------------------ ##
+
+# Bison used to accept character literals that were empty or contained
+# too many characters.
+
+# FIXME: AT_DATA or some variant of AT_DATA may eventually permit
+# the final newline to be omitted.  See the threads starting at
+# <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
+
+AT_SETUP([[Bad character literals]])
+
+AT_DATA([empty.y],
+[[%%
+start: '';
+start: '
+]])
+AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
+
+AT_BISON_CHECK([empty.y], [1], [],
+[[empty.y:2.8-9: warning: empty character literal
+empty.y:3.8-4.0: warning: empty character literal
+empty.y:3.8-4.0: missing "'" at end of line
+empty.y:4.8: warning: empty character literal
+empty.y:4.8: missing "'" at end of file
+]])
+
+AT_DATA([two.y],
+[[%%
+start: 'ab';
+start: 'ab
+]])
+AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
+
+AT_BISON_CHECK([two.y], [1], [],
+[[two.y:2.8-11: warning: extra characters in character literal
+two.y:3.8-4.0: warning: extra characters in character literal
+two.y:3.8-4.0: missing "'" at end of line
+two.y:4.8-10: warning: extra characters in character literal
+two.y:4.8-10: missing "'" at end of file
+]])
+
+AT_DATA([three.y],
+[[%%
+start: 'abc';
+start: 'abc
+]])
+AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
+
+AT_BISON_CHECK([three.y], [1], [],
+[[three.y:2.8-12: warning: extra characters in character literal
+three.y:3.8-4.0: warning: extra characters in character literal
+three.y:3.8-4.0: missing "'" at end of line
+three.y:4.8-11: warning: extra characters in character literal
+three.y:4.8-11: missing "'" at end of file
+]])
+
+AT_CLEANUP
+
+## ------------------------- ##
+## Bad escapes in literals.  ##
+## ------------------------- ##
+
+AT_SETUP([[Bad escapes in literals]])
+
+AT_DATA([input.y],
+[[%%
+start: '\777' '\0' '\xfff' '\x0'
+       '\uffff' '\u0000' '\Uffffffff' '\U00000000'
+       '\ ' '\A';
+]])
+
+# It is not easy to create special characters, we cannot even trust tr.
+# Beside we cannot even expect "echo '\0'" to output two characters
+# (well three with \n): at least Bash 3.2 converts the two-character
+# sequence "\0" into a single NUL character.
+AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
+           || exit 77]])
+
+AT_BISON_CHECK([input.y], [1], [],
+[[input.y:2.9-12: invalid number after \-escape: 777
+input.y:2.8-13: warning: empty character literal
+input.y:2.16-17: invalid number after \-escape: 0
+input.y:2.15-18: warning: empty character literal
+input.y:2.21-25: invalid number after \-escape: xfff
+input.y:2.20-26: warning: empty character literal
+input.y:2.29-31: invalid number after \-escape: x0
+input.y:2.28-32: warning: empty character literal
+input.y:3.9-14: invalid number after \-escape: uffff
+input.y:3.8-15: warning: empty character literal
+input.y:3.18-23: invalid number after \-escape: u0000
+input.y:3.17-24: warning: empty character literal
+input.y:3.27-36: invalid number after \-escape: Uffffffff
+input.y:3.26-37: warning: empty character literal
+input.y:3.40-49: invalid number after \-escape: U00000000
+input.y:3.39-50: warning: empty character literal
+input.y:4.9-10: invalid character after \-escape: ' '
+input.y:4.8-11: warning: empty character literal
+input.y:4.14-15: invalid character after \-escape: A
+input.y:4.13-16: warning: empty character literal
+input.y:5.9-16: invalid character after \-escape: \t
+input.y:5.17: invalid character after \-escape: \f
+input.y:5.18: invalid character after \-escape: \0
+input.y:5.19: invalid character after \-escape: \001
+]])
+
+AT_CLEANUP
+
+## ------------------------- ##
+## LAC: Errors for %define.  ##
+## ------------------------- ##
+
+AT_SETUP([[LAC: Errors for %define]])
+
+AT_DATA([[input.y]],
+[[%%
+start: ;
+]])
+
+# parse.lac.* options are useless if LAC isn't actually activated.
+AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
+               [[1]], [],
+[[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
+]])
+AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
+               [[1]], [],
+[[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
+]])
+
+AT_CLEANUP
+
+## --------------------------------------------- ##
+## -Werror is not affected by -Wnone and -Wall.  ##
+## --------------------------------------------- ##
+
+AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
+
+AT_DATA([[input.y]],
+[[%%
+foo-bar: ;
+]])
+
+# -Werror is not enabled by -Wall or equivalent.
+AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar

 ]])
 ]])

+AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+]])
+AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+]])
+
+# -Werror is not disabled by -Wnone or equivalent.
+AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
+AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
+[[bison: warnings being treated as errors
+input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+]])
+[mv stderr experr]
+AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
+
+AT_CLEANUP
+
+
+## ------------------------------------------------------ ##
+## %name-prefix and %define api.prefix are incompatible.  ##
+## ------------------------------------------------------ ##
+
+AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
+
+# AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
+# --------------------------------------------
+m4_pushdef([AT_TEST],
+[AT_DATA([[input.y]],
+[[$1
+%%
+exp:;
+]])
+AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
+[[$3: '%name-prefix' and '%define api.prefix' cannot be used together
+]])
+])
+
+AT_TEST([%define api.prefix foo %name-prefix "bar"], [], [input.y:1.9-18])
+AT_TEST([], [-Dapi.prefix=foo -p bar], [<command line>:2])
+AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [<command line>:2])
+AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18])
+
+m4_popdef([AT_TEST])

 
 AT_CLEANUP
 
 AT_CLEANUP