* src/Makefile.am (yacc): Quote target action commands properly so

[bison.git] / tests / regression.at

diff --git a/tests/regression.at b/tests/regression.at
index 04beccc3298245ebe25ae300441958877d65bf23..80a0ba5c1f7da92f63ab60053616d21bdb2db106 100644 (file)
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -49,12 +49,39 @@ AT_CLEANUP
 
 
 
 
 
 

-## ------------------------- ##
-## Early token definitions.  ##
-## ------------------------- ##
+## ----------------- ##
+## YYSTYPE typedef.  ##
+## ----------------- ##
+
+AT_SETUP([YYSTYPE typedef])
+
+AT_DATA_GRAMMAR([input.y],
+[[%{
+void yyerror (char const *);
+int yylex (void);
+typedef union { char const *val; } YYSTYPE;
+%}

 
 

+%type <val> program

 
 

-AT_SETUP([Early token definitions])
+%%
+
+program: { $$ = ""; };
+]])
+
+AT_CHECK([bison -o input.c input.y])
+AT_COMPILE([input.o], [-c input.c])
+
+AT_CLEANUP
+
+
+
+## ------------------------------------- ##
+## Early token definitions with --yacc.  ##
+## ------------------------------------- ##
+
+
+AT_SETUP([Early token definitions with --yacc])

 
 # Found in GCJ: they expect the tokens to be defined before the user
 # prologue, so that they can use the token definitions in it.
 
 # Found in GCJ: they expect the tokens to be defined before the user
 # prologue, so that they can use the token definitions in it.


@@ -80,6 +107,49 @@ exp: MY_TOKEN;
 %%
 ]])
 
 %%
 ]])
 

+AT_CHECK([bison -y -o input.c input.y])
+AT_COMPILE([input.o], [-c input.c])
+
+AT_CLEANUP
+
+
+
+## ---------------------------------------- ##
+## Early token definitions without --yacc.  ##
+## ---------------------------------------- ##
+
+
+AT_SETUP([Early token definitions without --yacc])
+
+# Found in GCJ: they expect the tokens to be defined before the user
+# prologue, so that they can use the token definitions in it.
+
+AT_DATA_GRAMMAR([input.y],
+[[%{
+#include <stdio.h>
+void yyerror (const char *s);
+int yylex (void);
+void print_my_token (void);
+%}
+
+%union
+{
+  int val;
+};
+%{
+void
+print_my_token (void)
+{
+  enum yytokentype my_token = MY_TOKEN;
+  printf ("%d\n", my_token);
+}
+%}
+%token MY_TOKEN
+%%
+exp: MY_TOKEN;
+%%
+]])
+

 AT_CHECK([bison -o input.c input.y])
 AT_COMPILE([input.o], [-c input.c])
 
 AT_CHECK([bison -o input.c input.y])
 AT_COMPILE([input.o], [-c input.c])
 


@@ -182,13 +252,13 @@ AT_CHECK([cat input.output], [],
 
     0 $accept: expr $end
 
 
     0 $accept: expr $end
 

-    1 @1: /* empty */
+    1 $@1: /* empty */

 
 

-    2 expr: 'a' @1 'b'
+    2 expr: 'a' $@1 'b'

 
 

-    3 @2: /* empty */
+    3 $@2: /* empty */

 
 

-    4 expr: @2 'c'
+    4 expr: $@2 'c'

 
 
 Terminals, with rules where they appear
 
 
 Terminals, with rules where they appear


@@ -206,9 +276,9 @@ $accept (6)
     on left: 0
 expr (7)
     on left: 2 4, on right: 0
     on left: 0
 expr (7)
     on left: 2 4, on right: 0

-@1 (8)
+$@1 (8)

     on left: 1, on right: 2
     on left: 1, on right: 2

-@2 (9)
+$@2 (9)

     on left: 3, on right: 4
 
 
     on left: 3, on right: 4
 
 


@@ -218,19 +288,19 @@ state 0
 
     'a'  shift, and go to state 1
 
 
     'a'  shift, and go to state 1
 

-    $default  reduce using rule 3 (@2)
+    $default  reduce using rule 3 ($@2)

 
     expr  go to state 2
 
     expr  go to state 2

-    @2    go to state 3
+    $@2   go to state 3

 
 
 state 1
 
 
 
 state 1
 

-    2 expr: 'a' . @1 'b'
+    2 expr: 'a' . $@1 'b'

 
 

-    $default  reduce using rule 1 (@1)
+    $default  reduce using rule 1 ($@1)

 
 

-    @1  go to state 4
+    $@1  go to state 4

 
 
 state 2
 
 
 state 2


@@ -242,14 +312,14 @@ state 2
 
 state 3
 
 
 state 3
 

-    4 expr: @2 . 'c'
+    4 expr: $@2 . 'c'

 
     'c'  shift, and go to state 6
 
 
 state 4
 
 
     'c'  shift, and go to state 6
 
 
 state 4
 

-    2 expr: 'a' @1 . 'b'
+    2 expr: 'a' $@1 . 'b'

 
     'b'  shift, and go to state 7
 
 
     'b'  shift, and go to state 7
 


@@ -263,14 +333,14 @@ state 5
 
 state 6
 
 
 state 6
 

-    4 expr: @2 'c' .
+    4 expr: $@2 'c' .

 
     $default  reduce using rule 4 (expr)
 
 
 state 7
 
 
     $default  reduce using rule 4 (expr)
 
 
 state 7
 

-    2 expr: 'a' @1 'b' .
+    2 expr: 'a' $@1 'b' .

 
     $default  reduce using rule 2 (expr)
 ]])
 
     $default  reduce using rule 2 (expr)
 ]])


@@ -328,6 +398,7 @@ input.y:5.1-17: invalid directive: `%a-does-not-exist'
 input.y:6.1: invalid character: `%'
 input.y:6.2: invalid character: `-'
 input.y:7.1-8.0: missing `%}' at end of file
 input.y:6.1: invalid character: `%'
 input.y:6.2: invalid character: `-'
 input.y:7.1-8.0: missing `%}' at end of file

+input.y:7.1-8.0: syntax error, unexpected %{...%}

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -363,6 +434,7 @@ AT_SETUP([Token definitions])
 # Bison managed, when fed with `%token 'f' "f"' to #define 'f'!
 AT_DATA_GRAMMAR([input.y],
 [%{
 # Bison managed, when fed with `%token 'f' "f"' to #define 'f'!
 AT_DATA_GRAMMAR([input.y],
 [%{

+#include <stdlib.h>

 #include <stdio.h>
 void yyerror (const char *s);
 int yylex (void);
 #include <stdio.h>
 void yyerror (const char *s);
 int yylex (void);


@@ -386,6 +458,9 @@ yyerror (char const *s)
 int
 yylex (void)
 {
 int
 yylex (void)
 {

+  static int called;
+  if (called++)
+    abort ();

   return SPECIAL;
 }
 
   return SPECIAL;
 }
 


@@ -478,9 +553,9 @@ AT_CHECK([cat input.output], 0,
     2 CONST_DEC_LIST: CONST_DEC
     3               | CONST_DEC_LIST CONST_DEC
 
     2 CONST_DEC_LIST: CONST_DEC
     3               | CONST_DEC_LIST CONST_DEC
 

-    4 @1: /* empty */
+    4 $@1: /* empty */

 
 

-    5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';'
+    5 CONST_DEC: $@1 undef_id_tok '=' const_id_tok ';'

 
 
 Terminals, with rules where they appear
 
 
 Terminals, with rules where they appear


@@ -503,7 +578,7 @@ CONST_DEC_LIST (9)
     on left: 2 3, on right: 1 3
 CONST_DEC (10)
     on left: 5, on right: 2 3
     on left: 2 3, on right: 1 3
 CONST_DEC (10)
     on left: 5, on right: 2 3

-@1 (11)
+$@1 (11)

     on left: 4, on right: 5
 
 
     on left: 4, on right: 5
 
 


@@ -511,12 +586,12 @@ state 0
 
     0 $accept: . CONST_DEC_PART $end
 
 
     0 $accept: . CONST_DEC_PART $end
 

-    $default  reduce using rule 4 (@1)
+    $default  reduce using rule 4 ($@1)

 
     CONST_DEC_PART  go to state 1
     CONST_DEC_LIST  go to state 2
     CONST_DEC       go to state 3
 
     CONST_DEC_PART  go to state 1
     CONST_DEC_LIST  go to state 2
     CONST_DEC       go to state 3

-    @1              go to state 4
+    $@1             go to state 4

 
 
 state 1
 
 
 state 1


@@ -531,11 +606,11 @@ state 2
     1 CONST_DEC_PART: CONST_DEC_LIST .
     3 CONST_DEC_LIST: CONST_DEC_LIST . CONST_DEC
 
     1 CONST_DEC_PART: CONST_DEC_LIST .
     3 CONST_DEC_LIST: CONST_DEC_LIST . CONST_DEC
 

-    undef_id_tok  reduce using rule 4 (@1)
+    undef_id_tok  reduce using rule 4 ($@1)

     $default      reduce using rule 1 (CONST_DEC_PART)
 
     CONST_DEC  go to state 6
     $default      reduce using rule 1 (CONST_DEC_PART)
 
     CONST_DEC  go to state 6

-    @1         go to state 4
+    $@1        go to state 4

 
 
 state 3
 
 
 state 3


@@ -547,7 +622,7 @@ state 3
 
 state 4
 
 
 state 4
 

-    5 CONST_DEC: @1 . undef_id_tok '=' const_id_tok ';'
+    5 CONST_DEC: $@1 . undef_id_tok '=' const_id_tok ';'

 
     undef_id_tok  shift, and go to state 7
 
 
     undef_id_tok  shift, and go to state 7
 


@@ -568,28 +643,28 @@ state 6
 
 state 7
 
 
 state 7
 

-    5 CONST_DEC: @1 undef_id_tok . '=' const_id_tok ';'
+    5 CONST_DEC: $@1 undef_id_tok . '=' const_id_tok ';'

 
     '='  shift, and go to state 8
 
 
 state 8
 
 
     '='  shift, and go to state 8
 
 
 state 8
 

-    5 CONST_DEC: @1 undef_id_tok '=' . const_id_tok ';'
+    5 CONST_DEC: $@1 undef_id_tok '=' . const_id_tok ';'

 
     const_id_tok  shift, and go to state 9
 
 
 state 9
 
 
     const_id_tok  shift, and go to state 9
 
 
 state 9
 

-    5 CONST_DEC: @1 undef_id_tok '=' const_id_tok . ';'
+    5 CONST_DEC: $@1 undef_id_tok '=' const_id_tok . ';'

 
     ';'  shift, and go to state 10
 
 
 state 10
 
 
     ';'  shift, and go to state 10
 
 
 state 10
 

-    5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';' .
+    5 CONST_DEC: $@1 undef_id_tok '=' const_id_tok ';' .

 
     $default  reduce using rule 5 (CONST_DEC)
 ]])
 
     $default  reduce using rule 5 (CONST_DEC)
 ]])


@@ -751,7 +826,8 @@ m4_define([_AT_DATA_DANCER_Y],
 [%{
 static int yylex (AT_LALR1_CC_IF([int *], [void]));
 AT_LALR1_CC_IF([],
 [%{
 static int yylex (AT_LALR1_CC_IF([int *], [void]));
 AT_LALR1_CC_IF([],

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

 static void yyerror (const char *);])
 %}
 $1
 static void yyerror (const char *);])
 %}
 $1


@@ -810,7 +886,9 @@ int
 yyparse ()
 {
   yy::parser parser;
 yyparse ()
 {
   yy::parser parser;

-  parser.set_debug_level (!!YYDEBUG);
+#if YYDEBUG
+  parser.set_debug_level (YYDEBUG);
+#endif

   return parser.parse ();
 }
 ],
   return parser.parse ();
 }
 ],


@@ -823,12 +901,14 @@ yyerror (const char *s)
 static int
 yylex (AT_LALR1_CC_IF([int *lval], [void]))
 [{
 static int
 yylex (AT_LALR1_CC_IF([int *lval], [void]))
 [{

-  static int toknum = 0;
-  static int tokens[] =
+  static int const tokens[] =

     {
       ':', -1
     };
     {
       ':', -1
     };

+  static size_t toknum;

   ]AT_LALR1_CC_IF([*lval = 0; /* Pacify GCC.  */])[
   ]AT_LALR1_CC_IF([*lval = 0; /* Pacify GCC.  */])[

+  if (! (toknum < sizeof tokens / sizeof *tokens))
+    abort ();

   return tokens[toknum++];
 }]
 
   return tokens[toknum++];
 }]
 


@@ -879,6 +959,7 @@ m4_define([_AT_DATA_EXPECT2_Y],
 static int yylex (AT_LALR1_CC_IF([int *], [void]));
 AT_LALR1_CC_IF([],
 [#include <stdio.h>
 static int yylex (AT_LALR1_CC_IF([int *], [void]));
 AT_LALR1_CC_IF([],
 [#include <stdio.h>

+#include <stdlib.h>

 static void yyerror (const char *);])
 %}
 $1
 static void yyerror (const char *);])
 %}
 $1


@@ -920,12 +1001,14 @@ yyerror (const char *s)
 static int
 yylex (AT_LALR1_CC_IF([int *lval], [void]))
 [{
 static int
 yylex (AT_LALR1_CC_IF([int *lval], [void]))
 [{

-  static int toknum = 0;
-  static int tokens[] =
+  static int const tokens[] =

     {
       1000, '+', '+', -1
     };
     {
       1000, '+', '+', -1
     };

+  static size_t toknum;

   ]AT_LALR1_CC_IF([*lval = 0; /* Pacify GCC.  */])[
   ]AT_LALR1_CC_IF([*lval = 0; /* Pacify GCC.  */])[

+  if (! (toknum < sizeof tokens / sizeof *tokens))
+    abort ();

   return tokens[toknum++];
 }]
 
   return tokens[toknum++];
 }]
 


@@ -961,3 +1044,102 @@ AT_CLEANUP
 AT_CHECK_EXPECT2()
 AT_CHECK_EXPECT2([%glr-parser])
 AT_CHECK_EXPECT2([%skeleton "lalr1.cc"])
 AT_CHECK_EXPECT2()
 AT_CHECK_EXPECT2([%glr-parser])
 AT_CHECK_EXPECT2([%skeleton "lalr1.cc"])

+
+
+
+## --------------------------------------------- ##
+## Braced code in declaration in rules section.  ##
+## --------------------------------------------- ##
+
+AT_SETUP([Braced code in declaration in rules section])
+
+# Bison once mistook braced code in a declaration in the rules section to be a
+# rule action.
+
+AT_DATA_GRAMMAR([input.y],
+[[%{
+#include <stdio.h>
+static void yyerror (char const *msg);
+static int yylex (void);
+%}
+
+%error-verbose
+
+%%
+
+start:
+  {
+    printf ("Bison would once convert this action to a midrule because of the"
+           " subsequent braced code.\n");
+  }
+  ;
+
+%destructor { fprintf (stderr, "DESTRUCTOR\n"); } 'a';
+%printer { fprintf (yyoutput, "PRINTER"); } 'a';
+
+%%
+
+static void
+yyerror (char const *msg)
+{
+  fprintf (stderr, "%s\n", msg);
+}
+
+static int
+yylex (void)
+{
+  return 'a';
+}
+
+int
+main (void)
+{
+  yydebug = 1;
+  return !yyparse ();
+}
+]])
+
+AT_CHECK([bison -t -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input], 0,
+[[Bison would once convert this action to a midrule because of the subsequent braced code.
+]],
+[[Starting parse
+Entering state 0
+Reducing stack by rule 1 (line 20):
+-> $$ = nterm start ()
+Stack now 0
+Entering state 1
+Reading a token: Next token is token 'a' (PRINTER)
+syntax error, unexpected 'a', expecting $end
+Error: popping nterm start ()
+Stack now 0
+Cleanup: discarding lookahead token 'a' (PRINTER)
+DESTRUCTOR
+Stack now 0
+]])
+
+AT_CLEANUP
+
+
+
+## --------------------------------- ##
+## String alias declared after use.  ##
+## --------------------------------- ##
+
+AT_SETUP([String alias declared after use])
+
+# Bison once incorrectly asserted that the symbol number for either a token or
+# its alias was the highest symbol number so far at the point of the alias
+# declaration.  That was true unless the declaration appeared after their first
+# uses and other tokens appeared in between.
+
+AT_DATA([input.y],
+[[%%
+start: 'a' "A" 'b';
+%token 'a' "A";
+]])
+
+AT_CHECK([bison -t -o input.c input.y])
+
+AT_CLEANUP