# Bison Regressions. -*- Autotest -*-
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010 Free Software Foundation, Inc.
+# Copyright (C) 2001-2012 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
AT_DATA_GRAMMAR([input.y],
[[%{
-void yyerror (char const *);
-int yylex (void);
+]AT_YYERROR_DECLARE_EXTERN[
+]AT_YYLEX_DECLARE_EXTERN[
#define YYSTYPE int *
%}
AT_DATA_GRAMMAR([input.y],
[[%{
-void yyerror (char const *);
-int yylex (void);
+]AT_YYERROR_DECLARE_EXTERN[
+]AT_YYLEX_DECLARE_EXTERN[
typedef union { char const *val; } YYSTYPE;
%}
AT_DATA_GRAMMAR([input.y],
[[%{
-void yyerror (const char *s);
-int yylex (void);
+]AT_YYERROR_DECLARE_EXTERN[
+]AT_YYLEX_DECLARE_EXTERN[
%}
%union
AT_DATA_GRAMMAR([input.y],
[[%{
#include <stdio.h>
-void yyerror (const char *s);
-int yylex (void);
+]AT_YYERROR_DECLARE_EXTERN[
+]AT_YYLEX_DECLARE_EXTERN[
void print_my_token (void);
%}
AT_SETUP([Braces parsing])
AT_DATA([input.y],
-[[/* Bison used to swallow the character after `}'. */
+[[/* Bison used to swallow the character after '}'. */
%%
exp: { tests = {{{{{{{{{{}}}}}}}}}}; };
AT_SETUP([Duplicate string])
AT_DATA([input.y],
-[[/* `Bison -v' used to dump core when two tokens are defined with the same
+[[/* 'Bison -v' used to dump core when two tokens are defined with the same
string, as LE and GE below. */
%token NUM
]])
AT_BISON_CHECK([-v -o input.c input.y], 0, [],
-[[input.y:6.8-14: warning: symbol `"<="' used more than once as a literal string
+[[input.y:6.8-14: warning: symbol "<=" used more than once as a literal string
]])
AT_CLEANUP
]])
AT_BISON_CHECK([input.y], [1], [],
-[[input.y:2.1: invalid character: `?'
-input.y:3.14: invalid character: `}'
-input.y:4.1: invalid character: `%'
-input.y:4.2: invalid character: `&'
-input.y:5.1-17: invalid directive: `%a-does-not-exist'
-input.y:6.1-2: invalid directive: `%-'
-input.y:7.1-8.0: missing `%}' at end of file
+[[input.y:2.1: invalid character: '?'
+input.y:3.14: invalid character: '}'
+input.y:4.1: invalid character: '%'
+input.y:4.2: invalid character: '&'
+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:7.1-8.0: syntax error, unexpected %{...%}
]])
AT_SETUP([Token definitions])
-# Bison managed, when fed with `%token 'f' "f"' to #define 'f'!
+# 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);
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE[
%}
[%error-verbose
%token MYEOF 0 "end of file"
# the user specification is eliminated.
AT_BISON_CHECK([-o input.c input.y], [[0]], [[]],
[[input.y:22.8-14: warning: symbol SPECIAL redeclared
-input.y:22.8-63: warning: symbol `"\\'?\"\a\b\f\n\r\t\v\001\201\001\201??!"' used more than once as a literal string
+input.y:22.8-63: warning: symbol "\\'?\"\a\b\f\n\r\t\v\001\201\001\201??!" used more than once as a literal string
]])
AT_COMPILE([input])
AT_SETUP([Characters Escapes])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([input.y],
[%{
-void yyerror (const char *s);
-int yylex (void);
+]AT_YYERROR_DECLARE_EXTERN[
+]AT_YYLEX_DECLARE_EXTERN[
%}
[%%
exp:
'\'' "\'"
| '\"' "\""
-| '"' "'"
+| '"' "'" /* Pacify font-lock-mode: ". */
;
]])
-# Pacify font-lock-mode: "
+
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-o input.c input.y])
AT_COMPILE([input.o], [-c input.c])
# The generation of the reduction was once wrong in Bison, and made it
# miss some reductions. In the following test case, the reduction on
-# `undef_id_tok' in state 1 was missing. This is stripped down from
+# 'undef_id_tok' in state 1 was missing. This is stripped down from
# the actual web2c.y.
AT_SETUP([Web2c Report])
## Web2c Actions. ##
## --------------- ##
-# The generation of the mapping `state -> action' was once wrong in
+# The generation of the mapping 'state -> action' was once wrong in
# extremely specific situations. web2c.y exhibits this situation.
# Below is a stripped version of the grammar. It looks like one can
# simplify it further, but just don't: it is tuned to exhibit a bug,
static const char *const yytname[] =
{
"$end", "error", "$undefined", "\"if\"", "\"const\"", "\"then\"",
- "\"else\"", "$accept", "statement", "struct_stat", "if", "else", 0
+ "\"else\"", "$accept", "statement", "struct_stat", "if", "else", YY_NULL
};
static const yytype_uint16 yytoknum[] =
{
AT_LALR1_CC_IF([],
[#include <stdlib.h>
#include <stdio.h>
-static void yyerror (const char *);])
+]AT_YYERROR_DECLARE[])
%}
$1
%token ARROW INVALID NUMBER STRING DATA
AT_LALR1_CC_IF([],
[#include <stdio.h>
#include <stdlib.h>
-static void yyerror (const char *);])
+]AT_YYERROR_DECLARE[])
%}
$1
%defines
# Bison once mistook braced code in a declaration in the rules section to be a
# rule action.
-
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([input.y],
[[%{
#include <stdio.h>
-static void yyerror (char const *msg);
-static int yylex (void);
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE[
%}
%error-verbose
%%
-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([-t -o input.c input.y])
AT_COMPILE([input])
# state's one item that (1) is associated with the same rule as the reduction
# and (2) has its dot at the end of its RHS. Previously, Bison also
# erroneously printed the lookahead set next to all of the state's other items
-# associated with the same rule. This bug affected only the `.output' file and
+# associated with the same rule. This bug affected only the '.output' file and
# not the generated parser source code.
AT_DATA([[input.y]],
# POSIX says token numbers can be declared in %left, %right, and %nonassoc, but
# we lost this in Bison 1.50.
-
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([input.y],
[[%{
#include <stdio.h>
- void yyerror (char const *);
- int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
%}
%error-verbose
+%right END 0
%left TK1 1 TK2 2 "tok alias" 3
%%
-start: TK1 sr_conflict "tok alias" ;
-
+start:
+ TK1 sr_conflict "tok alias"
+ | start %prec END
+ ;
sr_conflict:
TK2
| TK2 "tok alias"
%%
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
int
yylex (void)
{
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o input.c input.y]], [[0]],,
-[[input.y:24.5-19: warning: rule useless in parser due to conflicts: sr_conflict: TK2 "tok alias"
+[[input.y:23.5-19: warning: rule useless in parser due to conflicts: start: start
+input.y:27.5-19: warning: rule useless in parser due to conflicts: sr_conflict: TK2 "tok alias"
]])
AT_COMPILE([[input]])
AT_PARSER_CHECK([[./input]])
[cp $abs_top_srcdir/src/parse-gram.y input.y]
AT_BISON_CHECK([[-o input.c -Dlr.type=lalr input.y]])
[mv input.c lalr.c]
+AT_CAPTURE_FILE([lalr.c])
AT_BISON_CHECK([[-o input.c -Dlr.type=ielr input.y]])
[mv input.c ielr.c]
-AT_CHECK([[diff -u lalr.c ielr.c]])
+AT_CAPTURE_FILE([ielr.c])
+AT_CHECK([[diff lalr.c ielr.c]], [[0]])
AT_CLEANUP
AT_SETUP([[%error-verbose and YYSTACK_USE_ALLOCA]])
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([input.y],
[[%code {
#include <stdio.h>
- void yyerror (char const *);
- int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
#define YYSTACK_USE_ALLOCA 1
}
%%
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
-int
-yylex (void)
-{
- /* Induce two syntax error messages (which requires full error
- recovery by shifting 3 tokens) in order to detect any loss of the
- reallocated buffer. */
- static char const *input = "abc";
- return *input++;
-}
-
+]AT_YYERROR_DEFINE[
+/* Induce two syntax error messages (which requires full error
+ recovery by shifting 3 tokens) in order to detect any loss of the
+ reallocated buffer. */
+]AT_YYLEX_DEFINE([abc])[
int
main (void)
{
return yyparse ();
}
]])
+AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o input.c input.y]])
AT_COMPILE([[input]])
# yyparse would invoke yyerror using the old contents of yymsg.
AT_SETUP([[%error-verbose overflow]])
-
+AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([input.y],
[[%code {
#include <stdio.h>
- void yyerror (char const *);
- int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
/* This prevents this test case from having to induce error messages
large enough to overflow size_t. */
%%
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
-int
-yylex (void)
-{
- /* Induce two syntax error messages (which requires full error
- recovery by shifting 3 tokens). */
- static char const *input = "abc";
- return *input++;
-}
-
+]AT_YYERROR_DEFINE[
+/* Induce two syntax error messages (which requires full error
+ recovery by shifting 3 tokens). */
+]AT_YYLEX_DEFINE([abc])[
int
main (void)
{
syntax error
memory exhausted
]])
-
+AT_BISON_OPTION_POPDEFS
AT_CLEANUP
AT_DATA_GRAMMAR([input.y],
[[%code {
#include <stdio.h>
- void yyerror (char const *);
+ ]AT_YYERROR_DECLARE[
int yylex (]AT_PURE_IF([[YYSTYPE *]], [[void]])[);
}
// default reductions in inconsistent states
// v v v v v v v v v v v v v v
S: A B A A B A A A A B A A A A A A A B C C A A A A A A A A A A A A B ;
+// ^ ^ ^
+// LAC reallocs
A: 'a' | /*empty*/ { printf ("inconsistent default reduction\n"); } ;
B: 'b' ;
C: /*empty*/ { printf ("consistent default reduction\n"); } ;
%%
-
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
+]AT_YYERROR_DEFINE[
int
yylex (]AT_PURE_IF([[YYSTYPE *v]], [[void]])[)
{
}
]])
-# Give exactly the right amount of memory to be sure there's no
-# off-by-one error, for example.
-AT_BISON_CHECK([[-Dparse.lac=full -Dparse.lac.es-capacity=12 \
+AT_BISON_CHECK([[-Dparse.lac=full -Dparse.lac.es-capacity-initial=1 \
+ -Dparse.lac.memory-trace=full \
-t -o input.c input.y]], [[0]], [],
[[input.y: conflicts: 21 shift/reduce
]])
AT_CHECK([[perl -0777 -ne 'print s/\bconsistent default reduction//g;' \
< stdout.txt || exit 77]], [[0]], [[2]])
+# Check number of reallocs to be sure reallocated memory isn't somehow
+# lost between LAC invocations.
+AT_CHECK([[perl -0777 -ne 'print s/\(realloc//g;' < stderr.txt \
+ || exit 77]], [[0]], [[3]])
+
AT_BISON_OPTION_POPDEFS
])
AT_SETUP([[LAC: Memory exhaustion]])
-m4_pushdef([AT_LAC_CHECK], [
-
+m4_pushdef([AT_LAC_CHECK],
+[AT_BISON_OPTION_PUSHDEFS
AT_DATA_GRAMMAR([input.y],
[[%code {
#include <stdio.h>
- void yyerror (char const *);
- int yylex (void);
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
+ #define YYMAXDEPTH 8
}
%error-verbose
A: /*empty*/ | 'a' ;
%%
-
-void
-yyerror (char const *msg)
-{
- fprintf (stderr, "%s\n", msg);
-}
-
-int
-yylex (void)
-{
- static char const *input = "]$1[";
- return *input++;
-}
-
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE([$1])[
int
main (void)
{
}
]])
-AT_BISON_CHECK([[-Dparse.lac=full -Dparse.lac.es-capacity=8 \
+AT_BISON_CHECK([[-Dparse.lac=full -Dparse.lac.es-capacity-initial=1 \
-t -o input.c input.y]], [[0]], [],
[[input.y: conflicts: 8 shift/reduce
]])
AT_COMPILE([[input]])
-
+AT_BISON_OPTION_POPDEFS
])
# Check for memory exhaustion during parsing.
-AT_LAC_CHECK([[]])
-AT_PARSER_CHECK([[./input]], [[2]], [[]],
+AT_LAC_CHECK([])
+AT_PARSER_CHECK([[./input]], [[2]], [],
[[Starting parse
Entering state 0
Reading a token: Now at end of input.
LAC: initial context established for $end
-LAC: checking lookahead $end: R2 G3 R2 G5 R2 G6 R2 G7 R2 G8 R2 G9 R2 G10 R2 G11 R2 (max stack size exceeded)
+LAC: checking lookahead $end: R2 G3 R2 G5 R2 G6 R2 G7 R2 G8 R2 G9 R2 G10 R2 G11 R2 (max size exceeded)
memory exhausted
Cleanup: discarding lookahead token $end ()
Stack now 0
# Induce an immediate syntax error with an undefined token, and check
# for memory exhaustion while building syntax error message.
-AT_LAC_CHECK([[z]], [[0]])
-AT_PARSER_CHECK([[./input]], [[2]], [[]],
+AT_LAC_CHECK([z], [[0]])
+AT_PARSER_CHECK([[./input]], [[2]], [],
[[Starting parse
Entering state 0
Reading a token: Next token is token $undefined ()
LAC: initial context established for $undefined
LAC: checking lookahead $undefined: Always Err
Constructing syntax error message
-LAC: checking lookahead $end: R2 G3 R2 G5 R2 G6 R2 G7 R2 G8 R2 G9 R2 G10 R2 G11 R2 (max stack size exceeded)
+LAC: checking lookahead $end: R2 G3 R2 G5 R2 G6 R2 G7 R2 G8 R2 G9 R2 G10 R2 G11 R2 (max size exceeded)
syntax error
memory exhausted
Cleanup: discarding lookahead token $undefined ()
projects / bison.git / blobdiff