gnulib: update

[bison.git] / tests / named-refs.at

diff --git a/tests/named-refs.at b/tests/named-refs.at
index 8374cc4b6effd2f58eee590eae9f02fe135f57ff..f8df417d22632f705112fbd2262988f629b3577d 100644 (file)
--- a/tests/named-refs.at
+++ b/tests/named-refs.at
@@ -1,6 +1,6 @@
 # Named references test.                           -*- Autotest -*-
 
 # Named references test.                           -*- Autotest -*-
 

-# Copyright (C) 2009 Free Software Foundation, Inc.
+# Copyright (C) 2009-2015 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


@@ -15,13 +15,15 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 

+# FIXME: Duplication with calc.at.

 AT_BANNER([[Named references tests.]])
 
 AT_SETUP([Tutorial calculator])
 AT_BANNER([[Named references tests.]])
 
 AT_SETUP([Tutorial calculator])

-
+AT_BISON_OPTION_PUSHDEFS

 AT_DATA_GRAMMAR([test.y],
 [[
 %{
 AT_DATA_GRAMMAR([test.y],
 [[
 %{

+#include <assert.h>

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


@@ -31,8 +33,8 @@ FILE *input;
 static semantic_value global_result = 0;
 static int global_count = 0;
 static int power (int base, int exponent);
 static semantic_value global_result = 0;
 static int global_count = 0;
 static int power (int base, int exponent);

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

 %}
 
 %union
 %}
 
 %union


@@ -44,21 +46,21 @@ int yylex (void);
 %token <ival> NUM "number"
 %type  <ival> exp
 
 %token <ival> NUM "number"
 %type  <ival> exp
 

-%nonassoc '='   /* comparison         */
+%nonassoc '='   /* comparison          */

 %left '-' '+'
 %left '*' '/'
 %left '-' '+'
 %left '*' '/'

-%left NEG /* negation--unary minus */
+%precedence NEG /* negation--unary minus */

 %right '^'      /* exponentiation        */
 
 %%
 input:
   line
 %right '^'      /* exponentiation        */
 
 %%
 input:
   line

-| input line         {  }
+| input line         {}

 ;
 
 line:
   '\n'
 ;
 
 line:
   '\n'

-| exp '\n'           {  }
+| exp '\n'           {}

 ;
 
 exp:
 ;
 
 exp:


@@ -70,23 +72,18 @@ exp:
    $$ = $l;
   }
 | exp[x] '+' { $<ival>$ = $x; } [l] exp[r]  { $$ = $<ival>l + $r;    }
    $$ = $l;
   }
 | exp[x] '+' { $<ival>$ = $x; } [l] exp[r]  { $$ = $<ival>l + $r;    }

-| exp[l] '-' exp[r]        { $$ = $l - $r;        }
-| exp[l] '*' exp[r]        { $$ = $l * $r;        }
+| exp[l] '-' exp[r]  { $$ = $l - $r;        }
+| exp[l] '*' exp[r]  { $$ = $l * $r;        }

 | exp[l] '/' exp[r]  { $$ = $l / $r;        }
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp[l] '/' exp[r]  { $$ = $l / $r;        }
 | '-' exp  %prec NEG { $$ = -$2;            }

-| exp[l] '^' exp[r]        { $$ = power ($l, $r); }
-| '(' exp[e] ')'        { $$ = $e;           }
+| exp[l] '^' exp[r]  { $$ = power ($l, $r); }
+| '(' exp[e] ')'     { $$ = $e;           }

 | '(' error ')'      { $$ = 1111; yyerrok;  }
 | '!'                { $$ = 0; YYERROR;     }
 | '-' error          { $$ = 0; YYERROR;     }
 ;
 %%
 | '(' error ')'      { $$ = 1111; yyerrok;  }
 | '!'                { $$ = 0; YYERROR;     }
 | '-' error          { $$ = 0; YYERROR;     }
 ;
 %%

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

 static int get_char (void)
 {
   int res = getc (input);
 static int get_char (void)
 {
   int res = getc (input);


@@ -117,7 +114,8 @@ static int read_signed_integer (void)
   return sign * n;
 }
 
   return sign * n;
 }
 

-int yylex (void)
+static int
+yylex (void)

 {
   int c;
   /* Skip white space.  */
 {
   int c;
   /* Skip white space.  */


@@ -142,8 +140,7 @@ int yylex (void)
 static int power (int base, int exponent)
 {
   int res = 1;
 static int power (int base, int exponent)
 {
   int res = 1;

-  if (exponent < 0)
-    exit (3);
+  assert (0 <= exponent);

   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;
   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;


@@ -165,10 +162,8 @@ int main (int argc, const char **argv)
     }
   status = yyparse ();
   fclose (input);
     }
   status = yyparse ();
   fclose (input);

-  if (global_result != result)
-    abort ();
-  if (global_count != count)
-    abort ();
+  assert (global_result == result);
+  assert (global_count == count);

   return status;
 }
 ]])
   return status;
 }
 ]])


@@ -186,24 +181,26 @@ AT_DATA([input.txt],
 (2^2)^3 = 64
 ]])
 
 (2^2)^3 = 64
 ]])
 

-AT_BISON_CHECK([-o test.c test.y])
-AT_COMPILE([[test]])
+AT_FULL_COMPILE([[test]])

 AT_PARSER_CHECK([./test input.txt], 0, [], [stderr])
 AT_PARSER_CHECK([./test input.txt], 0, [], [stderr])

+AT_BISON_OPTION_POPDEFS

 AT_CLEANUP
 
 
 
 AT_CLEANUP
 
 
 

-#######################################################################
+## ------------------------------------ ##
+## Undefined and ambiguous references.  ##
+## ------------------------------------ ##

 
 
 AT_SETUP([Undefined and ambiguous references])
 
 
 AT_SETUP([Undefined and ambiguous references])

-
+AT_BISON_OPTION_PUSHDEFS

 AT_DATA_GRAMMAR([test.y],
 [[
 %{
 static int power (int base, int exponent);
 AT_DATA_GRAMMAR([test.y],
 [[
 %{
 static int power (int base, int exponent);

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

 %}
 
 %union
 %}
 
 %union


@@ -215,21 +212,21 @@ int yylex (void);
 %token <ival> NUM "number"
 %type  <ival> exp
 
 %token <ival> NUM "number"
 %type  <ival> exp
 

-%nonassoc '='   /* comparison         */
+%nonassoc '='   /* comparison          */

 %left '-' '+'
 %left '*' '/'
 %left '-' '+'
 %left '*' '/'

-%left NEG /* negation--unary minus */
+%precedence NEG /* negation--unary minus */

 %right '^'      /* exponentiation        */
 
 %%
 input:
   line
 %right '^'      /* exponentiation        */
 
 %%
 input:
   line

-| input line         {  }
+| input line         {}

 ;
 
 line:
   '\n'
 ;
 
 line:
   '\n'

-| exp '\n'           {  }
+| exp '\n'           {}

 ;
 
 exp:
 ;
 
 exp:


@@ -245,7 +242,7 @@ exp:
 | exp[x] '*' { $<ival>$ = $x; } [l] exp[r] { $$ = $l * $r; }
 | exp[l] '/' exp[r]  { $$ = $l / $r;        }
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp[x] '*' { $<ival>$ = $x; } [l] exp[r] { $$ = $l * $r; }
 | exp[l] '/' exp[r]  { $$ = $l / $r;        }
 | '-' exp  %prec NEG { $$ = -$2;            }

-| exp[l] '^' exp[r]        { $$ = power ($l, $r12); }
+| exp[l] '^' exp[r]  { $$ = power ($l, $r12); }

 | '(' exp ')'        { $$ = $expo;           }
 | '(' error ')'      { $$ = 1111; yyerrok;  }
 | '!'                { $$ = 0; YYERROR;     }
 | '(' exp ')'        { $$ = $expo;           }
 | '(' error ')'      { $$ = 1111; yyerrok;  }
 | '!'                { $$ = 0; YYERROR;     }


@@ -254,19 +251,48 @@ exp:
 %%
 ]])
 
 %%
 ]])
 

-AT_BISON_CHECK([-o test.c test.y], 1, [],
-[[test.y:50.51-60: invalid reference: `$<ival>lo9', symbol not found
-test.y:51.51-60: misleading reference: `$<ival>exp'
-test.y:42.1-3:   refers to: $exp at $$
-test.y:51.7:   possibly meant: $x, hiding $exp at $1
-test.y:51.41:   possibly meant: $r, hiding $exp at $4
-test.y:52.51-52: $l of `exp' has no declared type
-test.y:55.46-49: invalid reference: `$r12', symbol not found
-test.y:56.29-33: invalid reference: `$expo', symbol not found
+AT_BISON_CHECK([-fcaret -o test.c test.y], 1, [],
+[[test.y:52.51-60: error: invalid reference: '$<ival>lo9'
+ | exp[x] '+' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>lo9 + $r; }
+                                                   ^^^^^^^^^^
+test.y:52.3-68:      symbol not found in production: lo9
+ | exp[x] '+' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>lo9 + $r; }
+   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:53.51-60: warning: misleading reference: '$<ival>exp' [-Wother]
+ | exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
+                                                   ^^^^^^^^^^
+test.y:44.1-3:       refers to: $exp at $$
+ exp:
+ ^^^
+test.y:53.7:         possibly meant: $x, hiding $exp at $1
+ | exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
+       ^
+test.y:53.41:        possibly meant: $r, hiding $exp at $4
+ | exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
+                                         ^
+test.y:54.51-52: error: $l of 'exp' has no declared type
+ | exp[x] '*' { $<ival>$ = $x; } [l] exp[r] { $$ = $l * $r; }
+                                                   ^^
+test.y:57.40-43: error: invalid reference: '$r12'
+ | exp[l] '^' exp[r]  { $$ = power ($l, $r12); }
+                                        ^^^^
+test.y:57.3-47:      symbol not found in production: r12
+ | exp[l] '^' exp[r]  { $$ = power ($l, $r12); }
+   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:58.29-33: error: invalid reference: '$expo'
+ | '(' exp ')'        { $$ = $expo;           }
+                             ^^^^^
+test.y:58.3-46:      symbol not found in production: expo
+ | '(' exp ')'        { $$ = $expo;           }
+   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 ]])
 ]])

+AT_BISON_OPTION_POPDEFS

 AT_CLEANUP
 
 AT_CLEANUP
 

-#######################################################################
+
+## ----------------------- ##
+## Misleading references.  ##
+## ----------------------- ##

 
 AT_SETUP([Misleading references])
 AT_DATA_GRAMMAR([test.y],
 
 AT_SETUP([Misleading references])
 AT_DATA_GRAMMAR([test.y],


@@ -276,10 +302,10 @@ start: foo foo.bar { $foo.bar; }
 foo: '1'
 foo.bar: '2'
 ]])
 foo: '1'
 foo.bar: '2'
 ]])

-AT_BISON_CHECK([-o test.c test.y], 1, [],
-[[test.y:11.22-29: misleading reference: `$foo.bar'
-test.y:11.8-10:   refers to: $foo at $1
-test.y:11.12-18:   possibly meant: $[foo.bar] at $2
+AT_BISON_CHECK([-o test.c test.y], 0, [],
+[[test.y:11.22-29: warning: misleading reference: '$foo.bar' [-Wother]
+test.y:11.8-10:      refers to: $foo at $1
+test.y:11.12-18:     possibly meant: $[foo.bar] at $2

 ]])
 AT_CLEANUP
 
 ]])
 AT_CLEANUP
 


@@ -353,35 +379,167 @@ factor:     '(' expr ')'  { $$ = $2; }
     ;
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],
     ;
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],

-[[test.y:24.36-41: invalid reference: `$cond1', symbol not found
-test.y:26.43-53: invalid reference: `$stmt.field'
-test.y:25.35-38:   possibly meant: $then.field, hiding $stmt.field at $4
-test.y:28.43-52: invalid reference: `$stmt.list'
-test.y:27.30-38:   possibly meant: $[stmt.list] at $4
-test.y:30.43-46: ambiguous reference: `$xyz'
-test.y:29.35-37:   refers to: $xyz at $4
-test.y:29.50-52:   refers to: $xyz at $6
-test.y:32.43-52: invalid reference: `$stmt.list'
-test.y:31.40-43:   possibly meant: $then, hiding $[stmt.list] at $4
-test.y:31.61-64:   possibly meant: $else, hiding $[stmt.list] at $6
-test.y:34.43-58: invalid reference: `$stmt.list.field'
-test.y:33.40-43:   possibly meant: $then.field, hiding $[stmt.list].field at $4
-test.y:33.61-64:   possibly meant: $else.field, hiding $[stmt.list].field at $6
-test.y:36.43-54: invalid reference: `$[stmt.list]'
-test.y:35.40-43:   possibly meant: $then, hiding $[stmt.list] at $4
-test.y:35.61-64:   possibly meant: $else, hiding $[stmt.list] at $6
-test.y:38.43-49: invalid reference: `$then.1'
-test.y:37.40-45:   possibly meant: $[then.1] at $4
-test.y:40.43-55: invalid reference: `$then.1.field'
-test.y:39.40-45:   possibly meant: $[then.1].field at $4
-test.y:42.44-50: invalid reference: `$stmt.x'
-test.y:41.36-41:   possibly meant: $[stmt.x].x, hiding $stmt.x at $4
-test.y:41.36-41:   possibly meant: $[stmt.x] at $4
-test.y:44.13-22: invalid reference: `$if-stmt-a'
-test.y:43.1-9:   possibly meant: $[if-stmt-a] at $$
-test.y:46.46-54: invalid reference: `$then-a.f'
-test.y:45.41-46:   possibly meant: $[then-a].f at $4
+[[test.y:24.36-41: error: invalid reference: '$cond1'
+test.y:23.11-24.62:  symbol not found in production: cond1
+test.y:26.43-53: error: invalid reference: '$stmt.field'
+test.y:25.11-26.60:  symbol not found in production: stmt
+test.y:25.35-38:     possibly meant: $then.field, hiding $stmt.field at $4
+test.y:28.43-52: error: invalid reference: '$stmt.list'
+test.y:27.11-28.59:  symbol not found in production: stmt
+test.y:27.30-38:     possibly meant: $[stmt.list] at $4
+test.y:30.43-46: error: ambiguous reference: '$xyz'
+test.y:29.35-37:     refers to: $xyz at $4
+test.y:29.50-52:     refers to: $xyz at $6
+test.y:32.43-52: error: invalid reference: '$stmt.list'
+test.y:31.11-32.63:  symbol not found in production: stmt
+test.y:31.40-43:     possibly meant: $then, hiding $[stmt.list] at $4
+test.y:31.61-64:     possibly meant: $else, hiding $[stmt.list] at $6
+test.y:34.43-58: error: invalid reference: '$stmt.list.field'
+test.y:33.11-34.69:  symbol not found in production: stmt
+test.y:33.40-43:     possibly meant: $then.field, hiding $[stmt.list].field at $4
+test.y:33.61-64:     possibly meant: $else.field, hiding $[stmt.list].field at $6
+test.y:36.43-54: error: invalid reference: '$[stmt.list]'
+test.y:35.11-36.71:  symbol not found in production: stmt.list
+test.y:35.40-43:     possibly meant: $then, hiding $[stmt.list] at $4
+test.y:35.61-64:     possibly meant: $else, hiding $[stmt.list] at $6
+test.y:38.43-49: error: invalid reference: '$then.1'
+test.y:37.11-38.60:  symbol not found in production: then
+test.y:37.40-45:     possibly meant: $[then.1] at $4
+test.y:40.43-55: error: invalid reference: '$then.1.field'
+test.y:39.11-40.66:  symbol not found in production: then
+test.y:39.40-45:     possibly meant: $[then.1].field at $4
+test.y:42.44-50: error: invalid reference: '$stmt.x'
+test.y:41.12-42.57:  symbol not found in production: stmt
+test.y:41.36-41:     possibly meant: $[stmt.x].x, hiding $stmt.x at $4
+test.y:41.36-41:     possibly meant: $[stmt.x] at $4
+test.y:44.13-22: error: invalid reference: '$if-stmt-a'
+test.y:43.12-44.59:  symbol not found in production: if
+test.y:43.1-9:       possibly meant: $[if-stmt-a] at $$
+test.y:46.46-54: error: invalid reference: '$then-a.f'
+test.y:45.12-46.65:  symbol not found in production: then
+test.y:45.41-46:     possibly meant: $[then-a].f at $4
+]])
+
+AT_BISON_CHECK([-fcaret -o test.c test.y], 1, [],
+[[test.y:24.36-41: error: invalid reference: '$cond1'
+           { $if_stmt1 = new IfStmt($cond1, $then.f1, $else); };
+                                    ^^^^^^
+test.y:23.11-24.62:  symbol not found in production: cond1
+ if_stmt1: IF expr[cond] THEN stmt[then] ELSE stmt.list[else] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:26.43-53: error: invalid reference: '$stmt.field'
+           { $if_stmt2 = new IfStmt($cond, $stmt.field, 0); };
+                                           ^^^^^^^^^^^
+test.y:25.11-26.60:  symbol not found in production: stmt
+ if_stmt2: IF expr[cond] THEN stmt[then] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:25.35-38:     possibly meant: $then.field, hiding $stmt.field at $4
+ if_stmt2: IF expr[cond] THEN stmt[then] FI
+                                   ^^^^
+test.y:28.43-52: error: invalid reference: '$stmt.list'
+           { $if_stmt3 = new IfStmt($cond, $stmt.list, 0); };
+                                           ^^^^^^^^^^
+test.y:27.11-28.59:  symbol not found in production: stmt
+ if_stmt3: IF expr[cond] THEN stmt.list FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:27.30-38:     possibly meant: $[stmt.list] at $4
+ if_stmt3: IF expr[cond] THEN stmt.list FI
+                              ^^^^^^^^^
+test.y:30.43-46: error: ambiguous reference: '$xyz'
+           { $if_stmt4 = new IfStmt($cond, $xyz, $cond); };
+                                           ^^^^
+test.y:29.35-37:     refers to: $xyz at $4
+ if_stmt4: IF expr[cond] THEN stmt[xyz] ELSE stmt[xyz] FI
+                                   ^^^
+test.y:29.50-52:     refers to: $xyz at $6
+ if_stmt4: IF expr[cond] THEN stmt[xyz] ELSE stmt[xyz] FI
+                                                  ^^^
+test.y:32.43-52: error: invalid reference: '$stmt.list'
+           { $if_stmt5 = new IfStmt($cond, $stmt.list, $else); };
+                                           ^^^^^^^^^^
+test.y:31.11-32.63:  symbol not found in production: stmt
+ if_stmt5: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:31.40-43:     possibly meant: $then, hiding $[stmt.list] at $4
+ if_stmt5: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+                                        ^^^^
+test.y:31.61-64:     possibly meant: $else, hiding $[stmt.list] at $6
+ if_stmt5: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+                                                             ^^^^
+test.y:34.43-58: error: invalid reference: '$stmt.list.field'
+           { $if_stmt6 = new IfStmt($cond, $stmt.list.field, $else); };
+                                           ^^^^^^^^^^^^^^^^
+test.y:33.11-34.69:  symbol not found in production: stmt
+ if_stmt6: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:33.40-43:     possibly meant: $then.field, hiding $[stmt.list].field at $4
+ if_stmt6: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+                                        ^^^^
+test.y:33.61-64:     possibly meant: $else.field, hiding $[stmt.list].field at $6
+ if_stmt6: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+                                                             ^^^^
+test.y:36.43-54: error: invalid reference: '$[stmt.list]'
+           { $if_stmt7 = new IfStmt($cond, $[stmt.list].field, $else); };
+                                           ^^^^^^^^^^^^
+test.y:35.11-36.71:  symbol not found in production: stmt.list
+ if_stmt7: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:35.40-43:     possibly meant: $then, hiding $[stmt.list] at $4
+ if_stmt7: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+                                        ^^^^
+test.y:35.61-64:     possibly meant: $else, hiding $[stmt.list] at $6
+ if_stmt7: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+                                                             ^^^^
+test.y:38.43-49: error: invalid reference: '$then.1'
+           { $if_stmt8 = new IfStmt($cond, $then.1, $else); };
+                                           ^^^^^^^
+test.y:37.11-38.60:  symbol not found in production: then
+ if_stmt8: IF expr[cond] THEN stmt.list[then.1] ELSE stmt.list[else] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:37.40-45:     possibly meant: $[then.1] at $4
+ if_stmt8: IF expr[cond] THEN stmt.list[then.1] ELSE stmt.list[else] FI
+                                        ^^^^^^
+test.y:40.43-55: error: invalid reference: '$then.1.field'
+           { $if_stmt9 = new IfStmt($cond, $then.1.field, $else); };
+                                           ^^^^^^^^^^^^^
+test.y:39.11-40.66:  symbol not found in production: then
+ if_stmt9: IF expr[cond] THEN stmt.list[then.1] ELSE stmt.list[else] FI
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:39.40-45:     possibly meant: $[then.1].field at $4
+ if_stmt9: IF expr[cond] THEN stmt.list[then.1] ELSE stmt.list[else] FI
+                                        ^^^^^^
+test.y:42.44-50: error: invalid reference: '$stmt.x'
+           { $if_stmt10 = new IfStmt($cond, $stmt.x, 0); };
+                                            ^^^^^^^
+test.y:41.12-42.57:  symbol not found in production: stmt
+ if_stmt10: IF expr[cond] THEN stmt[stmt.x] FI
+            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:41.36-41:     possibly meant: $[stmt.x].x, hiding $stmt.x at $4
+ if_stmt10: IF expr[cond] THEN stmt[stmt.x] FI
+                                    ^^^^^^
+test.y:41.36-41:     possibly meant: $[stmt.x] at $4
+ if_stmt10: IF expr[cond] THEN stmt[stmt.x] FI
+                                    ^^^^^^
+test.y:44.13-22: error: invalid reference: '$if-stmt-a'
+           { $if-stmt-a = new IfStmt($cond, $then, $else); };
+             ^^^^^^^^^^
+test.y:43.12-44.59:  symbol not found in production: if
+ if-stmt-a: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:43.1-9:       possibly meant: $[if-stmt-a] at $$
+ if-stmt-a: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI
+ ^^^^^^^^^
+test.y:46.46-54: error: invalid reference: '$then-a.f'
+           { $[if-stmt-b] = new IfStmt($cond, $then-a.f, $else); };
+                                              ^^^^^^^^^
+test.y:45.12-46.65:  symbol not found in production: then
+ if-stmt-b: IF expr[cond] THEN if-stmt-a[then-a] ELSE stmt.list[else] FI
+            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:45.41-46:     possibly meant: $[then-a].f at $4
+ if-stmt-b: IF expr[cond] THEN if-stmt-a[then-a] ELSE stmt.list[else] FI
+                                         ^^^^^^

 ]])
 ]])

+

 AT_CLEANUP
 
 #######################################################################
 AT_CLEANUP
 
 #######################################################################


@@ -394,7 +552,7 @@ start: foo[] bar
   { s = $foo; }
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],
   { s = $foo; }
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],

-[[test.y:11.12: an identifier expected
+[[test.y:11.12: error: an identifier expected

 ]])
 AT_CLEANUP
 
 ]])
 AT_CLEANUP
 


@@ -408,7 +566,7 @@ start: foo[ a d ] bar
   { s = $foo; }
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],
   { s = $foo; }
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],

-[[test.y:11.15: unexpected identifier in bracketed name: `d'
+[[test.y:11.15: error: unexpected identifier in bracketed name: 'd'

 ]])
 AT_CLEANUP
 
 ]])
 AT_CLEANUP
 


@@ -422,7 +580,7 @@ start: foo[/* comment */] bar
   { s = $foo; }
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],
   { s = $foo; }
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],

-[[test.y:11.25: an identifier expected
+[[test.y:11.25: error: an identifier expected

 ]])
 AT_CLEANUP
 
 ]])
 AT_CLEANUP
 


@@ -432,13 +590,14 @@ AT_SETUP([Stray symbols in brackets])
 AT_DATA_GRAMMAR([test.y],
 [[
 %%
 AT_DATA_GRAMMAR([test.y],
 [[
 %%

-start: foo[ /* aaa */ *&-+ ] bar
+start: foo[ % /* aaa */ *&-.+\000\001\002\377 ] bar

   { s = $foo; }
 ]])
   { s = $foo; }
 ]])

+AT_CHECK([[$PERL -pi -e 's/\\(\d{3})/chr(oct($1))/ge' test.y || exit 77]])

 AT_BISON_CHECK([-o test.c test.y], 1, [],
 AT_BISON_CHECK([-o test.c test.y], 1, [],

-[[test.y:11.23: invalid character in bracketed name: `*'
-test.y:11.24: invalid character in bracketed name: `&'
-test.y:11.26: invalid character in bracketed name: `+'
+[[test.y:11.13: error: invalid character in bracketed name: '%'
+test.y:11.25-27: error: invalid characters in bracketed name: '*&-'
+test.y:11.29-30: error: invalid characters in bracketed name: '+\0\001\002\377'

 ]])
 AT_CLEANUP
 
 ]])
 AT_CLEANUP
 


@@ -448,9 +607,120 @@ AT_SETUP([Redundant words in LHS brackets])
 AT_DATA_GRAMMAR([test.y],
 [[
 %%
 AT_DATA_GRAMMAR([test.y],
 [[
 %%

-start[a s]: foo
+start[a s]: foo;
+]])
+AT_BISON_CHECK([-o test.c test.y], 1, [],
+[[test.y:11.9: error: unexpected identifier in bracketed name: 's'
+]])
+AT_CLEANUP
+
+#######################################################################
+
+# Bison used to free twice the named ref for "a", since a single copy
+# was used in two rules.
+AT_SETUP([Factored LHS])
+AT_DATA_GRAMMAR([test.y],
+[[
+%%
+start[a]: "foo" | "bar";
+]])
+AT_BISON_CHECK([-o test.c test.y])
+AT_CLEANUP
+
+#######################################################################
+
+AT_SETUP([Unresolved references])
+AT_DATA_GRAMMAR([test.y],
+[[
+%%
+stat:
+  sym_a sym_b { func($sym.field); }
+| sym_a sym_b { func($<aa>sym.field); }
+| sym_a sym_b { func($[sym.field]); }
+| sym_a sym_b { func($<aa>[sym.field]); }
+| sym_a sym_b { func($sym); }
+| sym_a sym_b { func($<aa>sym); }
+| sym_a sym_b { func($[sym]); } sym_a sym_b { func($<aa>[sym]); }
+;
+
+stat1:
+  sym_a sym_b { func($sym-field); }
+| sym_a sym_b { func($<aa>sym-field); }
+| sym_a sym_b { func($[sym-field]); }
+| sym_a sym_b { func($<aa>[sym-field]); }
+| sym_a sym_b { func($sym); }
+| sym_a sym_b { func($<aa>sym); }
+| sym_a sym_b { func($[sym]); } sym_a sym_b { func($<aa>[sym]); }
+;
+
+sym_a: 'a';
+sym_b: 'b';

 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],
 ]])
 AT_BISON_CHECK([-o test.c test.y], 1, [],

-[[test.y:11.9: unexpected identifier in bracketed name: `s'
+[[test.y:12.22-31: error: invalid reference: '$sym.field'
+test.y:12.3-35:      symbol not found in production: sym
+test.y:13.22-35: error: invalid reference: '$<aa>sym.field'
+test.y:13.3-39:      symbol not found in production: sym
+test.y:14.22-33: error: invalid reference: '$[sym.field]'
+test.y:14.3-37:      symbol not found in production: sym.field
+test.y:15.22-37: error: invalid reference: '$<aa>[sym.field]'
+test.y:15.3-41:      symbol not found in production: sym.field
+test.y:16.22-25: error: invalid reference: '$sym'
+test.y:16.3-29:      symbol not found in production: sym
+test.y:17.22-29: error: invalid reference: '$<aa>sym'
+test.y:17.3-33:      symbol not found in production: sym
+test.y:18.22-27: error: invalid reference: '$[sym]'
+test.y:18.3-65:      symbol not found in production before $3: sym
+test.y:18.52-61: error: invalid reference: '$<aa>[sym]'
+test.y:18.3-65:      symbol not found in production: sym
+test.y:22.22-31: error: invalid reference: '$sym-field'
+test.y:22.3-35:      symbol not found in production: sym
+test.y:23.22-35: error: invalid reference: '$<aa>sym-field'
+test.y:23.3-39:      symbol not found in production: sym
+test.y:24.22-33: error: invalid reference: '$[sym-field]'
+test.y:24.3-37:      symbol not found in production: sym-field
+test.y:25.22-37: error: invalid reference: '$<aa>[sym-field]'
+test.y:25.3-41:      symbol not found in production: sym-field
+test.y:26.22-25: error: invalid reference: '$sym'
+test.y:26.3-29:      symbol not found in production: sym
+test.y:27.22-29: error: invalid reference: '$<aa>sym'
+test.y:27.3-33:      symbol not found in production: sym
+test.y:28.22-27: error: invalid reference: '$[sym]'
+test.y:28.3-65:      symbol not found in production before $3: sym
+test.y:28.52-61: error: invalid reference: '$<aa>[sym]'
+test.y:28.3-65:      symbol not found in production: sym
+]])
+AT_CLEANUP
+
+#######################################################################
+
+AT_SETUP([[$ or @ followed by . or -]])
+AT_DATA([[test.y]],
+[[
+%%
+start:
+  .field { $.field; }
+| 'a'    { @.field; }
+;
+.field: ;
+]])
+AT_BISON_CHECK([[test.y]], [[1]], [],
+[[test.y:4.12-18: error: invalid reference: '$.field'
+test.y:4.13:        syntax error after '$', expecting integer, letter, '_', '@<:@', or '$'
+test.y:4.3-8:       possibly meant: $[.field] at $1
+test.y:5.12-18: error: invalid reference: '@.field'
+test.y:5.13:        syntax error after '@', expecting integer, letter, '_', '@<:@', or '$'
+]])
+AT_DATA([[test.y]],
+[[
+%%
+start:
+  'a' { $-field; }
+| 'b' { @-field; }
+;
+]])
+AT_BISON_CHECK([[test.y]], [[0]], [],
+[[test.y:4.9: warning: stray '$' [-Wother]
+test.y:5.9: warning: stray '@' [-Wother]

 ]])
 AT_CLEANUP
 ]])
 AT_CLEANUP