c++: clean up the handling of empty symbols

[bison.git] / tests / glr-regression.at

diff --git a/tests/glr-regression.at b/tests/glr-regression.at
index e14ce998d28b2740ff5f5fd60e6af644f2ddc4f9..71f6e6d56fd7caf22a6d06a74385c27182b6974f 100644 (file)
--- a/tests/glr-regression.at
+++ b/tests/glr-regression.at
@@ -1,6 +1,6 @@
 # Checking GLR Parsing: Regression Tests           -*- Autotest -*-
 
-# Copyright (C) 2002-2003, 2005-2007, 2009-2012 Free Software
+# Copyright (C) 2002-2003, 2005-2007, 2009-2015 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -67,7 +67,7 @@ static YYSTYPE exprMerge (YYSTYPE x0, YYSTYPE x1)
   return 0;
 }
 
-const char *input = YY_NULL;
+const char *input = YY_NULLPTR;
 
 int
 main (int argc, const char* argv[])
@@ -88,8 +88,8 @@ yylex (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr1.c glr-regr1.y]], 0, [],
-[glr-regr1.y: conflicts: 1 shift/reduce
-])
+[[glr-regr1.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
+]])
 AT_COMPILE([glr-regr1])
 AT_PARSER_CHECK([[./glr-regr1 BPBPB]], 0,
 [[E -> 'B'
@@ -208,8 +208,8 @@ main (int argc, char **argv)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr2a.c glr-regr2a.y]], 0, [],
-[glr-regr2a.y: conflicts: 2 shift/reduce
-])
+[[glr-regr2a.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
+]])
 AT_COMPILE([glr-regr2a])
 
 AT_DATA([input1.txt],
@@ -304,7 +304,7 @@ MergeRule (int x0, int x1)
 }
 ]AT_YYERROR_DEFINE[
 
-FILE *input = YY_NULL;
+FILE *input = YY_NULLPTR;
 
 int P[] = { P1, P2 };
 int O[] = { O1, O2 };
@@ -326,7 +326,7 @@ int yylex (void)
 }
 
 int
-main(int argc, char* argv[])
+main (int argc, char* argv[])
 {
   int res;
   input = stdin;
@@ -341,8 +341,9 @@ main(int argc, char* argv[])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr3.c glr-regr3.y]], 0, [],
-[glr-regr3.y: conflicts: 1 shift/reduce, 1 reduce/reduce
-])
+[[glr-regr3.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
+glr-regr3.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr3])
 
 AT_DATA([input.txt],
@@ -436,8 +437,8 @@ merge (YYSTYPE s1, YYSTYPE s2)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr4.c glr-regr4.y]], 0, [],
-[glr-regr4.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr4.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr4])
 
 AT_PARSER_CHECK([[./glr-regr4]], 0,
@@ -487,20 +488,16 @@ start:
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["a"])[
-int
-main (void)
-{
-  return yyparse () != 1;
-}
+]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr5.c glr-regr5.y]], 0, [],
-[glr-regr5.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr5.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr5])
 
-AT_PARSER_CHECK([[./glr-regr5]], 0, [],
+AT_PARSER_CHECK([[./glr-regr5]], 1, [],
 [syntax is ambiguous
 ])
 
@@ -539,20 +536,16 @@ start: 'a' | 'a' ;
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["a"])[
-int
-main (void)
-{
-  return yyparse () != 1;
-}
+]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr6.c glr-regr6.y]], 0, [],
-[glr-regr6.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr6.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr6])
 
-AT_PARSER_CHECK([[./glr-regr6]], 0,
+AT_PARSER_CHECK([[./glr-regr6]], 1,
 [Destructor called.
 ],
 [syntax is ambiguous
@@ -637,8 +630,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr7.c glr-regr7.y]], 0, [],
-[glr-regr7.y: conflicts: 2 reduce/reduce
-])
+[[glr-regr7.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr7])
 
 AT_PARSER_CHECK([[./glr-regr7]], 2, [],
@@ -650,7 +643,7 @@ AT_CLEANUP
 
 ## ------------------------------------------------------------------------- ##
 ## Incorrect default location for empty right-hand sides.  Adapted from bug  ##
-## report by Claudia Hermann.                                               ##
+## report by Claudia Hermann.                                                ##
 ## See http://lists.gnu.org/archive/html/bug-bison/2005-10/msg00069.html and ##
 ## http://lists.gnu.org/archive/html/bug-bison/2005-10/msg00072.html         ##
 ## ------------------------------------------------------------------------- ##
@@ -676,25 +669,25 @@ AT_DATA_GRAMMAR([glr-regr8.y],
 %%
 
 
-PortClause     : T_PORT InterfaceDeclaration T_PORT
-               { printf("%d/%d - %d/%d - %d/%d\n",
-                        @1.first_column, @1.last_column,
-                        @2.first_column, @2.last_column,
-                        @3.first_column, @3.last_column); }
-       ;
+PortClause      : T_PORT InterfaceDeclaration T_PORT
+                { printf("%d/%d - %d/%d - %d/%d\n",
+                         @1.first_column, @1.last_column,
+                         @2.first_column, @2.last_column,
+                         @3.first_column, @3.last_column); }
+        ;
 
-InterfaceDeclaration   : OptConstantWord       %dprec 1
-       | OptSignalWord %dprec 2
-       ;
+InterfaceDeclaration    : OptConstantWord       %dprec 1
+        | OptSignalWord %dprec 2
+        ;
 
-OptConstantWord        : /* empty */
-       | T_CONSTANT
-       ;
+OptConstantWord : /* empty */
+        | T_CONSTANT
+        ;
 
-OptSignalWord  : /* empty */
-               { printf("empty: %d/%d\n", @$.first_column, @$.last_column); }
-       | T_SIGNAL
-       ;
+OptSignalWord   : /* empty */
+                { printf("empty: %d/%d\n", @$.first_column, @$.last_column); }
+        | T_SIGNAL
+        ;
 
 %%
 
@@ -721,18 +714,13 @@ int yylex (void)
     }
 }
 
-int
-main (void)
-{
-  yyparse();
-  return 0;
-}
+]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr8.c glr-regr8.y]], 0, [],
-[glr-regr8.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr8.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr8])
 
 AT_PARSER_CHECK([[./glr-regr8]], 0,
@@ -811,8 +799,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr9.c glr-regr9.y]], 0, [],
-[glr-regr9.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr9.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr9])
 
 AT_PARSER_CHECK([[./glr-regr9]], 0, [],
@@ -867,8 +855,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr10.c glr-regr10.y]], 0, [],
-[glr-regr10.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr10.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr10])
 
 AT_PARSER_CHECK([[./glr-regr10]], 0, [], [])
@@ -925,8 +913,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr11.c glr-regr11.y]], 0, [],
-[glr-regr11.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr11.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr11])
 
 AT_PARSER_CHECK([[./glr-regr11]], 0, [], [])
@@ -1027,17 +1015,17 @@ main (void)
   int exit_status = yyparse ();
   if (parent_rhs_before_value)
     {
-      fprintf (stderr, "`parent_rhs_before' destructor not called.\n");
+      fprintf (stderr, "'parent_rhs_before' destructor not called.\n");
       exit_status = 1;
     }
   if (merged_value)
     {
-      fprintf (stderr, "`merged' destructor not called.\n");
+      fprintf (stderr, "'merged' destructor not called.\n");
       exit_status = 1;
     }
   if (parent_rhs_after_value)
     {
-      fprintf (stderr, "`PARENT_RHS_AFTER' destructor not called.\n");
+      fprintf (stderr, "'PARENT_RHS_AFTER' destructor not called.\n");
       exit_status = 1;
     }
   return exit_status;
@@ -1046,8 +1034,9 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr12.c glr-regr12.y]], 0, [],
-[glr-regr12.y: conflicts: 1 shift/reduce, 1 reduce/reduce
-])
+[[glr-regr12.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
+glr-regr12.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr12])
 
 AT_PARSER_CHECK([[./glr-regr12]], 0, [], [])
@@ -1056,7 +1045,7 @@ AT_CLEANUP
 
 
 ## ------------------------------------------------------------------------- ##
-## Incorrect lookahead during deterministic GLR.  See                       ##
+## Incorrect lookahead during deterministic GLR.  See                        ##
 ## <http://lists.gnu.org/archive/html/help-bison/2005-07/msg00017.html> and  ##
 ## <http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00060.html>.  ##
 ## ------------------------------------------------------------------------- ##
@@ -1144,10 +1133,10 @@ print_lookahead (char const *reduction)
     {
       printf ("'%c', yylval='", yychar);
       if (yylval.value > ' ')
-       printf ("%c", yylval.value);
+        printf ("%c", yylval.value);
       printf ("', yylloc=(%d,%d),(%d,%d)",
-             yylloc.first_line, yylloc.first_column,
-             yylloc.last_line, yylloc.last_column);
+              yylloc.first_line, yylloc.first_column,
+              yylloc.last_line, yylloc.last_column);
     }
   printf ("\n");
 }
@@ -1244,7 +1233,7 @@ merge:
   | conflict defstate_look 'a' nonconflict2 'b' defstate_shift %dprec 2 {
     USE ($3); USE ($5);
     print_lookahead ("merge <- conflict defstate_look 'a' nonconflict2 'b'"
-                     " defstate_shift");
+                      " defstate_shift");
   }
   ;
 
@@ -1291,7 +1280,7 @@ alt1:
     USE ($1);
     if (yychar != 'd' && yychar != YYEOF)
       {
-       fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
+        fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
       }
   }
   ;
@@ -1300,7 +1289,7 @@ alt2:
     USE ($1);
     if (yychar != 'd' && yychar != YYEOF)
       {
-       fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
+        fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
       }
   }
   ;
@@ -1309,7 +1298,7 @@ alt3:
     USE ($1);
     if (yychar != 'd' && yychar != YYEOF)
       {
-       fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
+        fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
       }
   }
   ;
@@ -1317,8 +1306,8 @@ no_look:
   {
     if (yychar != YYEMPTY)
       {
-       fprintf (stderr,
-                "Found lookahead where shouldn't during stack explosion.\n");
+        fprintf (stderr,
+                 "Found lookahead where shouldn't during stack explosion.\n");
       }
   }
   ;
@@ -1350,10 +1339,10 @@ print_lookahead (char const *reduction)
     {
       printf ("'%c', yylval='", yychar);
       if (yylval.value > ' ')
-       printf ("%c", yylval.value);
+        printf ("%c", yylval.value);
       printf ("', yylloc=(%d,%d),(%d,%d)",
-             yylloc.first_line, yylloc.first_column,
-             yylloc.last_line, yylloc.last_column);
+              yylloc.first_line, yylloc.first_column,
+              yylloc.last_line, yylloc.last_column);
     }
   printf ("\n");
 }
@@ -1376,8 +1365,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr14.c glr-regr14.y]], 0, [],
-[glr-regr14.y: conflicts: 3 reduce/reduce
-])
+[[glr-regr14.y: warning: 3 reduce/reduce conflicts [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr14])
 
 AT_PARSER_CHECK([[./glr-regr14]], 0,
@@ -1460,7 +1449,7 @@ main (void)
   int exit_status = yyparse () != 1;
   if (parent_rhs_before_value)
     {
-      fprintf (stderr, "`parent_rhs_before' destructor not called.\n");
+      fprintf (stderr, "'parent_rhs_before' destructor not called.\n");
       exit_status = 1;
     }
   return exit_status;
@@ -1469,8 +1458,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr15.c glr-regr15.y]], 0, [],
-[glr-regr15.y: conflicts: 2 reduce/reduce
-])
+[[glr-regr15.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr15])
 
 AT_PARSER_CHECK([[./glr-regr15]], 0, [],
@@ -1529,8 +1518,8 @@ main (void)
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr16.c glr-regr16.y]], 0, [],
-[glr-regr16.y: conflicts: 1 reduce/reduce
-])
+[[glr-regr16.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr16])
 
 AT_PARSER_CHECK([[./glr-regr16]], 0, [],
@@ -1598,20 +1587,16 @@ yylex (YYSTYPE *lvalp, YYLTYPE *llocp)
   return input[toknum++];
 }
 
-int
-main (void)
-{
-  return yyparse () != 1;
-}
+]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr17.c glr-regr17.y]], 0, [],
-[glr-regr17.y: conflicts: 3 reduce/reduce
-])
+[[glr-regr17.y: warning: 3 reduce/reduce conflicts [-Wconflicts-rr]
+]])
 AT_COMPILE([glr-regr17])
 
-AT_PARSER_CHECK([[./glr-regr17]], 0, [],
+AT_PARSER_CHECK([[./glr-regr17]], 1, [],
 [1.1-2.2: syntax is ambiguous
 ])
 
@@ -1653,20 +1638,16 @@ sym3: %merge<merge> { $$ = 0; } ;
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE[
-int
-main (void)
-{
-  return yyparse ();
-}
+]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o glr-regr18.c glr-regr18.y]], 1, [],
-[glr-regr18.y:26.18-24: error: result type clash on merge function 'merge': <type2> != <type1>
-glr-regr18.y:25.18-24:     previous declaration
-glr-regr18.y:27.13-19: error: result type clash on merge function 'merge': <type3> != <type2>
-glr-regr18.y:26.18-24:     previous declaration
-])
+[[glr-regr18.y:28.18-24: error: result type clash on merge function 'merge': <type2> != <type1>
+glr-regr18.y:27.18-24:     previous declaration
+glr-regr18.y:29.13-19: error: result type clash on merge function 'merge': <type3> != <type2>
+glr-regr18.y:28.18-24:     previous declaration
+]])
 
 AT_CLEANUP
 
@@ -1677,7 +1658,7 @@ AT_CLEANUP
 
 AT_SETUP([Ambiguity reports])
 
-AT_BISON_OPTION_PUSHDEFS
+AT_BISON_OPTION_PUSHDEFS([%debug])
 AT_DATA_GRAMMAR([input.y],
 [[
 %{
@@ -1700,21 +1681,16 @@ d: /* nada.  */;
 %%
 ]AT_YYERROR_DEFINE[
 ]AT_YYLEX_DEFINE(["abc"])[
-int
-main (void)
-{
-  yydebug = 1;
-  return !!yyparse ();
-}
+]AT_MAIN_DEFINE[
 ]])
 AT_BISON_OPTION_POPDEFS
 
 AT_BISON_CHECK([[-o input.c input.y]], 0, [],
-[input.y: conflicts: 1 reduce/reduce
-])
+[[input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+]])
 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' ()
@@ -1723,14 +1699,14 @@ Entering state 1
 Reading a token: Next token is token 'b' ()
 Shifting token 'b' ()
 Entering state 3
-Reducing stack 0 by rule 3 (line 25):
+Reducing stack 0 by rule 3 (line 27):
    $1 = token 'b' ()
 -> $$ = nterm b ()
 Entering state 4
 Reading a token: Next token is token 'c' ()
 Shifting token 'c' ()
 Entering state 6
-Reducing stack 0 by rule 4 (line 26):
+Reducing stack 0 by rule 4 (line 28):
 -> $$ = nterm d ()
 Entering state 7
 Reading a token: Now at end of input.
@@ -1773,3 +1749,33 @@ Cleanup: popping token 'a' ()
 ])
 
 AT_CLEANUP
+
+
+## ----------------------------------------------------------------- ##
+## Predicates.                                                       ##
+##                                                                   ##
+## http://lists.gnu.org/archive/html/bug-bison/2013-10/msg00004.html ##
+## ----------------------------------------------------------------- ##
+
+AT_SETUP([Predicates])
+
+# FIXME: We need genuine test cases with uses of %?.
+
+AT_DATA_GRAMMAR([input.y],
+[[%glr-parser
+%expect-rr 1
+%%
+// Exercise "%?{...}" and "%? {...}".
+widget:
+  %? {new_syntax} "widget" id new_args  { $$ = f($3, $4); }
+| %?{!new_syntax} "widget" id old_args  { $$ = f($3, $4); }
+;
+id:;
+new_args:;
+old_args:;
+%%
+]])
+
+AT_BISON_CHECK([[input.y]])
+
+AT_CLEANUP