# Checking GLR Parsing: Regression Tests -*- Autotest -*-
-# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2009 Free Software
+
+# Copyright (C) 2002-2003, 2005-2007, 2009-2012 Free Software
# Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
AT_SETUP([Badly Collapsed GLR States])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr1.y],
[[/* Regression Test: Improper state compression */
/* Reported by Scott McPeak */
#define YYSTYPE int
static YYSTYPE exprMerge (YYSTYPE x0, YYSTYPE x1);
-int yylex (void);
-void yyerror (char const *msg);
+]AT_YYLEX_DECLARE[
+]AT_YYERROR_DECLARE[
%}
return yyparse ();
}
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
int
yylex (void)
{
int ch;
if (feof (stdin))
- abort ();
+ abort ();
ch = getchar ();
if (ch == EOF)
- return 0;
+ return 0;
else if (ch == 'B' || ch == 'P')
- return ch;
+ return ch;
}
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr1.c glr-regr1.y]], 0, [],
[glr-regr1.y: conflicts: 1 shift/reduce
AT_SETUP([Improper handling of embedded actions and dollar(-N) in GLR parsers])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr2a.y],
[[/* Regression Test: Improper handling of embedded actions and $-N */
/* Reported by S. Eken */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
- int yylex (void);
- void yyerror (char const *);
+ ]AT_YYLEX_DECLARE[
+ ]AT_YYERROR_DECLARE[
%}
%glr-parser
{ printf ("Variable: '%s'\n", $-1); }
%%
-
+]AT_YYERROR_DEFINE[
FILE *input;
int
char *s;
if (feof (stdin))
abort ();
- switch (fscanf (input, " %1[a-z,]", buf)) {
+ switch (fscanf (input, " %1[a-z,]", buf))
+ {
case 1:
return buf[0];
case EOF:
return 'V';
}
-void
-yyerror (char const *s)
-{ printf ("%s\n", s);
-}
-
int
main (int argc, char **argv)
{
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr2a.c glr-regr2a.y]], 0, [],
[glr-regr2a.y: conflicts: 2 shift/reduce
AT_SETUP([Improper merging of GLR delayed action sets])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr3.y],
[[/* Regression Test: Improper merging of GLR delayed action sets. */
/* Reported by M. Rosien */
#include <stdarg.h>
static int MergeRule (int x0, int x1);
-static void yyerror (char const * s);
-int yylex (void);
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE[
#define RULE(x) (1 << (x))
%%
-static int MergeRule (int x0, int x1) {
+static int
+MergeRule (int x0, int x1)
+{
return x0 | x1;
}
+]AT_YYERROR_DEFINE[
-static void yyerror(char const * s) {
- fprintf(stderr,"error: %s\n",s);
-}
-
-FILE *input = NULL;
+FILE *input = YY_NULL;
int P[] = { P1, P2 };
int O[] = { O1, O2 };
return BAD_CHAR;
}
-int main(int argc, char* argv[]) {
+int
+main(int argc, char* argv[])
+{
input = stdin;
if (argc == 2 && !(input = fopen (argv[1], "r"))) return 3;
return yyparse ();
}
]])
+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
## ------------------------------------------------------------------------- ##
-## Duplicate representation of merged trees. See ##
+## Duplicate representation of merged trees. See ##
## <http://lists.gnu.org/archive/html/help-bison/2005-07/msg00013.html>. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Duplicate representation of merged trees])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr4.y],
[[
%union { char *ptr; }
#include <string.h>
static char *merge (YYSTYPE, YYSTYPE);
static char *make_value (char const *, char const *);
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static char *ptrs[100];
static char **ptrs_next = ptrs;
%}
B: 'a' { $$ = make_value ("B", "'a'"); } ;
%%
-
-static int
-yylex (void)
-{
- static char const input[] = "a";
- static size_t toknum;
- if (! (toknum < sizeof input))
- abort ();
- return input[toknum++];
-}
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE([a])[
int
main (void)
sprintf (value, format, s1.ptr, s2.ptr);
return value;
}
-
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr4.c glr-regr4.y]], 0, [],
[glr-regr4.y: conflicts: 1 reduce/reduce
## -------------------------------------------------------------------------- ##
-## User destructor for unresolved GLR semantic value. See ##
+## User destructor for unresolved GLR semantic value. See ##
## <http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00016.html>. ##
## -------------------------------------------------------------------------- ##
AT_SETUP([User destructor for unresolved GLR semantic value])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr5.y],
[[
%{
#include <stdio.h>
#include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
enum { MAGIC_VALUE = -1057808125 }; /* originally chosen at random */
%}
;
%%
-
-static int
-yylex (void)
-{
- static char const input[] = "a";
- static size_t toknum;
- if (! (toknum < sizeof input))
- abort ();
- return input[toknum++];
-}
-
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYLEX_DEFINE(a)[
+]AT_YYERROR_DEFINE[
int
main (void)
{
return yyparse () != 1;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr5.c glr-regr5.y]], 0, [],
[glr-regr5.y: conflicts: 1 reduce/reduce
## -------------------------------------------------------------------------- ##
-## User destructor after an error during a split parse. See ##
+## User destructor after an error during a split parse. See ##
## <http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00029.html>. ##
## -------------------------------------------------------------------------- ##
AT_SETUP([User destructor after an error during a split parse])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr6.y],
[[
%{
#include <stdio.h>
#include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
%}
%glr-parser
return input[toknum++];
}
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
int
main (void)
{
return yyparse () != 1;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr6.c glr-regr6.y]], 0, [],
[glr-regr6.y: conflicts: 1 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Duplicated user destructor for lookahead. See ##
+## Duplicated user destructor for lookahead. See ##
## <http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00035.html>. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Duplicated user destructor for lookahead])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr7.y],
[[
%{
#include <stdio.h>
#include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
#define YYSTACKEXPANDABLE 0
typedef struct count_node {
int count;
return 'a';
}
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
int
main (void)
{
return status;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr7.c glr-regr7.y]], 0, [],
[glr-regr7.y: conflicts: 2 reduce/reduce
## ------------------------------------------------------------------------- ##
## 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 ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Incorrectly initialized location for empty right-hand side in GLR])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr8.y],
[[
%{
#include <stdio.h>
#include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
- static void yyerror (char const *msg);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
+ ]AT_YYERROR_DECLARE[
%}
%token T_CONSTANT
%%
-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
+ ;
%%
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int lexIndex;
int yylex (void)
return 0;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr8.c glr-regr8.y]], 0, [],
[glr-regr8.y: conflicts: 1 reduce/reduce
## ------------------------------------------------------------------------- ##
-## No users destructors if stack 0 deleted. See ##
+## No users destructors if stack 0 deleted. See ##
## <http://lists.gnu.org/archive/html/bison-patches/2005-09/msg00109.html>. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([No users destructors if stack 0 deleted])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr9.y],
[[
%{
# include <stdio.h>
# include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
# define YYSTACKEXPANDABLE 0
static int tokens = 0;
static int destructors = 0;
return 'a';
}
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
int
main (void)
{
return !exit_status;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr9.c glr-regr9.y]], 0, [],
[glr-regr9.y: conflicts: 1 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Corrupted semantic options if user action cuts parse. ##
+## Corrupted semantic options if user action cuts parse. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Corrupted semantic options if user action cuts parse])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr10.y],
[[
%{
# include <stdlib.h>
# include <stdio.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
#define GARBAGE_SIZE 50
static char garbage[GARBAGE_SIZE];
%}
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int
yylex (void)
{
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr10.c glr-regr10.y]], 0, [],
[glr-regr10.y: conflicts: 1 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Undesirable destructors if user action cuts parse. ##
+## Undesirable destructors if user action cuts parse. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Undesirable destructors if user action cuts parse])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr11.y],
[[
%{
# include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static int destructors = 0;
# define USE(val)
%}
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
-static int
-yylex (void)
-{
- static char const input[] = "a";
- static size_t toknum;
- if (! (toknum < sizeof input))
- abort ();
- return input[toknum++];
-}
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE([a])[
int
main (void)
return exit_status;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr11.c glr-regr11.y]], 0, [],
[glr-regr11.y: conflicts: 1 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Leaked semantic values if user action cuts parse. ##
+## Leaked semantic values if user action cuts parse. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Leaked semantic values if user action cuts parse])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr12.y],
[[
%glr-parser
%{
# include <stdlib.h>
static int merge (YYSTYPE, YYSTYPE);
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static int parent_rhs_before_value = 0;
static int merged_value = 0;
static int parent_rhs_after_value = 0;
return dummy;
}
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int
yylex (void)
{
return exit_status;
}
]])
+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
## ------------------------------------------------------------------------- ##
-## 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>. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Incorrect lookahead during deterministic GLR])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr13.y],
[[
/* Tests:
%{
#include <stdio.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static void print_lookahead (char const *);
#define USE(value)
%}
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int
yylex (void)
{
{
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");
}
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr13.c glr-regr13.y]], 0, [], [])
AT_COMPILE([glr-regr13])
## ------------------------------------------------------------------------- ##
-## Incorrect lookahead during nondeterministic GLR. ##
+## Incorrect lookahead during nondeterministic GLR. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Incorrect lookahead during nondeterministic GLR])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr14.y],
[[
/* Tests:
%{
#include <stdlib.h>
#include <stdio.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static void print_lookahead (char const *);
static char merge (union YYSTYPE, union YYSTYPE);
#define USE(value)
| 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");
}
;
USE ($1);
if (yychar != 'd' && yychar != YYEOF)
{
- fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
+ fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
}
}
;
USE ($1);
if (yychar != 'd' && yychar != YYEOF)
{
- fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
+ fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
}
}
;
USE ($1);
if (yychar != 'd' && yychar != YYEOF)
{
- fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
+ fprintf (stderr, "Incorrect lookahead during stack explosion.\n");
}
}
;
{
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");
}
}
;
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int
yylex (void)
{
{
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");
}
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr14.c glr-regr14.y]], 0, [],
[glr-regr14.y: conflicts: 3 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Leaked semantic values when reporting ambiguity. ##
+## Leaked semantic values when reporting ambiguity. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Leaked semantic values when reporting ambiguity])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr15.y],
[[
%glr-parser
%{
# include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static int parent_rhs_before_value = 0;
# define USE(val)
%}
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int
yylex (void)
{
return exit_status;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr15.c glr-regr15.y]], 0, [],
[glr-regr15.y: conflicts: 2 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Leaked lookahead after nondeterministic parse syntax error. ##
+## Leaked lookahead after nondeterministic parse syntax error. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Leaked lookahead after nondeterministic parse syntax error])
+
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr16.y],
[[
%glr-parser
%{
# include <stdlib.h>
- static void yyerror (char const *);
- static int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
static int lookahead_value = 0;
# define USE(val)
%}
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
static int
yylex (void)
{
return exit_status;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr16.c glr-regr16.y]], 0, [],
[glr-regr16.y: conflicts: 1 reduce/reduce
## ------------------------------------------------------------------------- ##
-## Uninitialized location when reporting ambiguity. ##
+## Uninitialized location when reporting ambiguity. ##
## ------------------------------------------------------------------------- ##
AT_SETUP([Uninitialized location when reporting ambiguity])
+
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr17.y],
[[
%glr-parser
static void
yyerror (YYLTYPE *locp, char const *msg)
{
- fprintf (stderr, "Error at %d.%d-%d.%d: %s.\n", locp->first_line,
- locp->first_column, locp->last_line, locp->last_column, msg);
+ fprintf (stderr, "%d.%d-%d.%d: %s.\n", locp->first_line,
+ locp->first_column, locp->last_line, locp->last_column, msg);
}
static int
return yyparse () != 1;
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr17.c glr-regr17.y]], 0, [],
[glr-regr17.y: conflicts: 3 reduce/reduce
AT_COMPILE([glr-regr17])
AT_PARSER_CHECK([[./glr-regr17]], 0, [],
-[Error at 1.1-2.3: syntax is ambiguous.
+[1.1-2.3: syntax is ambiguous.
])
AT_CLEANUP
## -------------------------------------------------------------##
AT_SETUP([Missed %merge type warnings when LHS type is declared later])
+
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([glr-regr18.y],
[[%glr-parser
%{
#include <stdlib.h>
- static void yyerror (char const *);
+ ]AT_YYERROR_DECLARE[
static int yylex ();
%}
%%
-static void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
-static int
-yylex ()
-{
- static int called;
- if (called++)
- abort ();
- return 0;
-}
-
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE()[
int
main (void)
{
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o glr-regr18.c glr-regr18.y]], 1, [],
-[glr-regr18.y:26.18-24: result type clash on merge function `merge': <type2> != <type1>
+[glr-regr18.y:26.18-24: result type clash on merge function 'merge': <type2> != <type1>
glr-regr18.y:25.18-24: previous declaration
-glr-regr18.y:27.13-19: result type clash on merge function `merge': <type3> != <type2>
+glr-regr18.y:27.13-19: result type clash on merge function 'merge': <type3> != <type2>
glr-regr18.y:26.18-24: previous declaration
])
AT_CLEANUP
+
+
+## ------------------- ##
+## Ambiguity reports. ##
+## ------------------- ##
+
+AT_SETUP([Ambiguity reports])
+
+AT_BISON_OPTION_PUSHDEFS
+AT_DATA_GRAMMAR([input.y],
+[[
+%{
+ #include <stdio.h>
+ #include <stdlib.h>
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
+%}
+
+%debug
+%glr-parser
+
+%%
+start:
+ 'a' b 'c' d
+| 'a' b 'c' d
+;
+b: 'b';
+d: /* nada. */;
+%%
+]AT_YYLEX_DEFINE([abc])[
+]AT_YYERROR_DEFINE[
+int
+main (void)
+{
+ yydebug = 1;
+ return !!yyparse ();
+}
+]])
+AT_BISON_OPTION_POPDEFS
+
+AT_BISON_CHECK([[-o input.c input.y]], 0, [],
+[input.y: conflicts: 1 reduce/reduce
+])
+AT_COMPILE([input])
+
+AT_PARSER_CHECK([[./input]], 1, [],
+[Starting parse
+Entering state 0
+Reading a token: Next token is token 'a' ()
+Shifting token 'a' ()
+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):
+ $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):
+-> $$ = nterm d ()
+Entering state 7
+Reading a token: Now at end of input.
+Stack 0 Entering state 7
+Now at end of input.
+Splitting off stack 1 from 0.
+Reduced stack 1 by rule #2; action deferred. Now in state 2.
+Stack 1 Entering state 2
+Now at end of input.
+Reduced stack 0 by rule #1; action deferred. Now in state 2.
+Merging stack 0 into stack 1.
+Stack 1 Entering state 2
+Now at end of input.
+Removing dead stacks.
+Rename stack 1 -> 0.
+On stack 0, shifting token $end ()
+Stack 0 now in state #5
+Ambiguity detected.
+Option 1,
+ start -> <Rule 1, tokens 1 .. 3>
+ 'a' <tokens 1 .. 1>
+ b <tokens 2 .. 2>
+ 'c' <tokens 3 .. 3>
+ d <empty>
+
+Option 2,
+ start -> <Rule 2, tokens 1 .. 3>
+ 'a' <tokens 1 .. 1>
+ b <tokens 2 .. 2>
+ 'c' <tokens 3 .. 3>
+ d <empty>
+
+syntax is ambiguous
+Cleanup: popping token $end ()
+Cleanup: popping unresolved nterm start ()
+Cleanup: popping nterm d ()
+Cleanup: popping token 'c' ()
+Cleanup: popping nterm b ()
+Cleanup: popping token 'a' ()
+])
+
+AT_CLEANUP
projects / bison.git / blobdiff