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[bison.git] / tests / torture.at
index 262a11d7b9ffd0002406d4937270cc943204331e..68050bea58f5a43491f76a8221ec442e7db2bc73 100644 (file)
 # Torturing Bison.                                    -*- Autotest -*-
 # Torturing Bison.                                    -*- Autotest -*-
-# Copyright 2001 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
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
+# Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2009, 2010 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
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 AT_BANNER([[Torture Tests.]])
 
 
 
 AT_BANNER([[Torture Tests.]])
 
 
-# AT_DATA_STACK_TORTURE(C-PROLOGUE)
-# ---------------------------------
+# AT_INCREASE_DATA_SIZE(SIZE)
+# ---------------------------
+# Try to increase the data size to SIZE KiB if possible.
+m4_define([AT_INCREASE_DATA_SIZE],
+[data_limit=`(ulimit -S -d) 2>/dev/null`
+case $data_limit in
+[[0-9]]*)
+  if test "$data_limit" -lt $1; then
+    AT_CHECK([ulimit -S -d $1 || exit 77])
+    ulimit -S -d $1
+  fi
+esac])
+
+
+## ------------------------------------- ##
+## Creating a large artificial grammar.  ##
+## ------------------------------------- ##
+
+# AT_DATA_TRIANGULAR_GRAMMAR(FILE-NAME, SIZE)
+# -------------------------------------------
+# Create FILE-NAME, containing a self checking parser for a huge
+# triangular grammar.
+m4_define([AT_DATA_TRIANGULAR_GRAMMAR],
+[AT_DATA([[gengram.pl]],
+[[#! /usr/bin/perl -w
+
+use strict;
+my $max = $ARGV[0] || 10;
+
+print <<EOF;
+]AT_DATA_GRAMMAR_PROLOGUE[
+%error-verbose
+%debug
+%{
+#include <stdio.h>
+#include <stdlib.h>
+
+static int yylex (void);
+static void yyerror (const char *msg);
+%}
+%union
+{
+  int val;
+};
+
+%token END "end"
+%type <val> exp input
+EOF
+
+for my $size (1 .. $max)
+  {
+    print "%token t$size $size \"$size\"\n";
+  };
+
+print <<EOF;
+%%
+input:
+  exp        { if (\@S|@1 != 0) abort (); \$\$ = \@S|@1; }
+| input exp  { if (\@S|@2 != \@S|@1 + 1) abort (); \$\$ = \@S|@2; }
+;
+
+exp:
+  END
+    { \$\$ = 0; }
+EOF
+
+for my $size (1 .. $max)
+  {
+    use Text::Wrap;
+    print wrap ("| ", "   ",
+               (map { "\"$_\"" } (1 .. $size)),
+               " END \n"),
+                 "    { \$\$ = $size; }\n";
+  };
+print ";\n";
+
+print <<EOF;
+%%
+static int
+yylex (void)
+{
+  static int inner = 1;
+  static int outer = 0;
+  if (outer > $max)
+    return 0;
+  else if (inner > outer)
+    {
+      inner = 1;
+      ++outer;
+      return END;
+    }
+  return inner++;
+}
+
+static void
+yyerror (const char *msg)
+{
+  fprintf (stderr, "%s\\n", msg);
+}
+
+int
+main (void)
+{
+  yydebug = !!getenv ("YYDEBUG");
+  return yyparse ();
+}
+EOF
+]])
+
+AT_CHECK([perl -w ./gengram.pl $2 || exit 77], 0, [stdout])
+mv stdout $1
+])
+
+
+## -------------- ##
+## Big triangle.  ##
+## -------------- ##
+
+AT_SETUP([Big triangle])
+
+# I have been able to go up to 2000 on my machine.
+# I tried 3000, a 29Mb grammar file, but then my system killed bison.
+# With 500 and the new parser, which consume far too much memory,
+# it gets killed too.  Of course the parser is to be cleaned.
+AT_DATA_TRIANGULAR_GRAMMAR([input.y], [200])
+AT_BISON_CHECK_NO_XML([-v -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input])
+
+AT_CLEANUP
+
+
+
+# AT_DATA_HORIZONTAL_GRAMMAR(FILE-NAME, SIZE)
+# -------------------------------------------
+# Create FILE-NAME, containing a self checking parser for a huge
+# horizontal grammar.
+m4_define([AT_DATA_HORIZONTAL_GRAMMAR],
+[AT_DATA([[gengram.pl]],
+[[#! /usr/bin/perl -w
+
+use strict;
+my $max = $ARGV[0] || 10;
+
+print <<EOF;
+]AT_DATA_GRAMMAR_PROLOGUE[
+%error-verbose
+%debug
+%{
+#include <stdio.h>
+#include <stdlib.h>
+
+static int yylex (void);
+static void yyerror (const char *msg);
+%}
+
+%token
+EOF
+for my $size (1 .. $max)
+  {
+    print "    t$size $size \"$size\"\n";
+  };
+
+print <<EOF;
+
+%%
+EOF
+
+use Text::Wrap;
+print
+  wrap ("exp: ", "  ",
+       (map { "\"$_\"" } (1 .. $max)), ";"),
+  "\n";
+
+print <<EOF;
+%%
+static int
+yylex (void)
+{
+  static int counter = 1;
+  if (counter <= $max)
+    return counter++;
+  if (counter++ != $max + 1)
+    abort ();
+  return 0;
+}
+
+static void
+yyerror (const char *msg)
+{
+  fprintf (stderr, "%s\\n", msg);
+}
+
+int
+main (void)
+{
+  yydebug = !!getenv ("YYDEBUG");
+  return yyparse ();
+}
+EOF
+]])
+
+AT_CHECK([perl -w ./gengram.pl $2 || exit 77], 0, [stdout])
+mv stdout $1
+])
+
+
+## ---------------- ##
+## Big horizontal.  ##
+## ---------------- ##
+
+AT_SETUP([Big horizontal])
+
+# I have been able to go up to 10000 on my machine, but I had to
+# increase the maximum stack size (* 100).  It gave:
+#
+# input.y      263k
+# input.tab.c  1.3M
+# input        453k
+#
+# gengram.pl 10000                 0.70s user 0.01s sys  99% cpu    0.711 total
+# bison input.y                  730.56s user 0.53s sys  99% cpu 12:12.34 total
+# gcc -Wall input.tab.c -o input   5.81s user 0.20s sys 100% cpu     6.01 total
+# ./input                          0.00s user 0.01s sys 108% cpu     0.01 total
+#
+AT_DATA_HORIZONTAL_GRAMMAR([input.y], [1000])
+
+# GNU m4 requires about 70 MiB for this test on a 32-bit host.
+# Ask for 200 MiB, which should be plenty even on a 64-bit host.
+AT_INCREASE_DATA_SIZE(204000)
+
+AT_BISON_CHECK_NO_XML([-v -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input])
+
+AT_CLEANUP
+
+
+
+# AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR(FILE-NAME, SIZE)
+# --------------------------------------------------
+# Create FILE-NAME, containing a self checking parser for a grammar
+# requiring SIZE lookahead tokens.
+m4_define([AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR],
+[AT_DATA([[gengram.pl]],
+[[#! /usr/bin/perl -w
+
+use strict;
+use Text::Wrap;
+my $max = $ARGV[0] || 10;
+
+print <<EOF;
+%error-verbose
+%debug
+%{
+# include <stdio.h>
+# include <stdlib.h>
+# include <assert.h>
+
+static int yylex (void);
+static void yyerror (const char *msg);
+%}
+%union
+{
+  int val;
+};
+
+%type <val> input exp
+%token token
+EOF
+
+print
+  wrap ("%type <val> ",
+       "            ",
+       map { "n$_" } (1 .. $max)),
+  "\n";
+
+print "%token\n";
+for my $count (1 .. $max)
+  {
+    print "    t$count $count \"$count\"\n";
+  };
+
+print <<EOF;
+%%
+input:
+  exp        { assert (\@S|@1 == 1); \$\$ = \@S|@1; }
+| input exp  { assert (\@S|@2 == \@S|@1 + 1); \$\$ = \@S|@2; }
+;
+
+exp:
+  n1 "1" { assert (\@S|@1 == 1); \@S|@\@S|@ = \@S|@1; }
+EOF
+
+for my $count (2 .. $max)
+  {
+    print "| n$count \"$count\" { assert (\@S|@1 == $count); \@S|@\@S|@ = \@S|@1; }\n";
+  };
+print ";\n";
+
+for my $count (1 .. $max)
+  {
+    print "n$count: token { \$\$ = $count; };\n";
+  };
+
+print <<EOF;
+%%
+static int
+yylex (void)
+{
+  static int return_token = 1;
+  static int counter = 1;
+  if (counter > $max)
+    {
+      if (counter++ != $max + 1)
+       abort ();
+      return 0;
+    }
+  if (return_token)
+    {
+      return_token = 0;
+      return token;
+    }
+  return_token = 1;
+  return counter++;
+}
+
+static void
+yyerror (const char *msg)
+{
+  fprintf (stderr, "%s\\n", msg);
+}
+
+int
+main (void)
+{
+  yydebug = !!getenv ("YYDEBUG");
+  return yyparse ();
+}
+EOF
+]])
+
+AT_CHECK([perl -w ./gengram.pl $2 || exit 77], 0, [stdout])
+mv stdout $1
+])
+
+
+## ------------------------ ##
+## Many lookahead tokens.   ##
+## ------------------------ ##
+
+AT_SETUP([Many lookahead tokens])
+
+AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR([input.y], [1000])
+
+# GNU m4 requires about 70 MiB for this test on a 32-bit host.
+# Ask for 200 MiB, which should be plenty even on a 64-bit host.
+AT_INCREASE_DATA_SIZE(204000)
+
+AT_BISON_CHECK([-v -o input.c input.y])
+AT_COMPILE([input])
+AT_PARSER_CHECK([./input])
+
+AT_CLEANUP
+
+
+
+# AT_DATA_STACK_TORTURE(C-PROLOGUE, [BISON-DECLS])
+# ------------------------------------------------
 # A parser specialized in torturing the stack size.
 m4_define([AT_DATA_STACK_TORTURE],
 [# A grammar of parens growing the stack thanks to right recursion.
 # exp:
 AT_DATA([input.y],
 [[%{
 # A parser specialized in torturing the stack size.
 m4_define([AT_DATA_STACK_TORTURE],
 [# A grammar of parens growing the stack thanks to right recursion.
 # exp:
 AT_DATA([input.y],
 [[%{
+#include <errno.h>
+#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <assert.h>
 ]$1[
   static int yylex (void);
   static void yyerror (const char *msg);
 ]$1[
   static int yylex (void);
   static void yyerror (const char *msg);
-#define YYPRINT(File, Type, Value)                   \
-  fprintf (File, " (%d, stack size = %d, max = %d)", \
-           Value, yyssp - yyss + 1, yystacksize);
 %}
 %}
+]$2[
 %error-verbose
 %debug
 %token WAIT_FOR_EOF
 %error-verbose
 %debug
 %token WAIT_FOR_EOF
@@ -47,15 +413,13 @@ static void
 yyerror (const char *msg)
 {
   fprintf (stderr, "%s\n", msg);
 yyerror (const char *msg)
 {
   fprintf (stderr, "%s\n", msg);
-  exit (1);
 }
 
 }
 
-/* There are YYLVAL_MAX of WAIT_FOR_EOFs. */
-unsigned int yylval_max;
-
 static int
 yylex (void)
 {
 static int
 yylex (void)
 {
+  if (yylval < 0)
+    abort ();
   if (yylval--)
     return WAIT_FOR_EOF;
   else
   if (yylval--)
     return WAIT_FOR_EOF;
   else
@@ -65,14 +429,41 @@ yylex (void)
 int
 main (int argc, const char **argv)
 {
 int
 main (int argc, const char **argv)
 {
-  assert (argc == 2);
-  yylval = atoi (argv[1]);
+  char *endp;
+  YYSTYPE yylval_init;
+  if (argc != 2)
+    abort ();
+  yylval_init = strtol (argv[1], &endp, 10);
+  if (! (argv[1] != endp
+        && 0 <= yylval_init && yylval_init <= INT_MAX
+        && errno != ERANGE))
+    abort ();
   yydebug = 1;
   yydebug = 1;
-  return yyparse ();
+  {
+    int count;
+    int status;
+]m4_bmatch([$2], [%push-],
+[[    yypstate *ps = yypstate_new ();
+]])[    for (count = 0; count < 2; ++count)
+      {
+        int new_status;
+        yylval = yylval_init;
+]m4_bmatch([$2], [%push-],
+[[        new_status = yypull_parse (ps);
+]],
+[[        new_status = yyparse ();
+]])[        if (count > 0 && new_status != status)
+          abort ();
+        status = new_status;
+      }
+]m4_bmatch([$2], [%push-],
+[[    yypstate_delete (ps);
+]])[    return status;
+  }
 }
 ]])
 }
 ]])
-AT_CHECK([bison input.y -o input.c])
-AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
+AT_BISON_CHECK([-o input.c input.y])
+AT_COMPILE([input])
 ])
 
 
 ])
 
 
@@ -82,15 +473,40 @@ AT_CHECK([$CC $CFLAGS $CPPFLAGS input.c -o input], 0, [], [ignore])
 
 AT_SETUP([Exploding the Stack Size with Alloca])
 
 
 AT_SETUP([Exploding the Stack Size with Alloca])
 
-AT_DATA_STACK_TORTURE
+m4_pushdef([AT_USE_ALLOCA], [[
+#if (defined __GNUC__ || defined __BUILTIN_VA_ARG_INCR \
+     || defined _AIX || defined _MSC_VER || defined _ALLOCA_H)
+# define YYSTACK_USE_ALLOCA 1
+#endif
+]])
+
+AT_DATA_STACK_TORTURE([AT_USE_ALLOCA])
 
 # Below the limit of 200.
 
 # Below the limit of 200.
-AT_CHECK([input 20], 0, [], [ignore])
+AT_PARSER_CHECK([./input 20], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
 # Two enlargements: 2 * 2 * 200.
 # Two enlargements: 2 * 2 * 200.
-AT_CHECK([input 900], 0, [], [ignore])
+AT_PARSER_CHECK([./input 900], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
 # Fails: beyond the limit of 10,000 (which we don't reach anyway since we
 # multiply by two starting at 200 => 5120 is the last possible).
 # Fails: beyond the limit of 10,000 (which we don't reach anyway since we
 # multiply by two starting at 200 => 5120 is the last possible).
-AT_CHECK([input 10000], 1, [], [ignore])
+AT_PARSER_CHECK([./input 10000], 2, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+
+# The push parser can't use alloca since the stacks can't be locals.  This test
+# just helps guarantee we don't let the YYSTACK_USE_ALLOCA feature affect
+# push parsers.
+AT_DATA_STACK_TORTURE([AT_USE_ALLOCA],
+[[%define api.push-pull both
+]])
+AT_PARSER_CHECK([./input 20], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+AT_PARSER_CHECK([./input 900], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+AT_PARSER_CHECK([./input 10000], 2, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+
+m4_popdef([AT_USE_ALLOCA])
 
 AT_CLEANUP
 
 
 AT_CLEANUP
 
@@ -103,1206 +519,31 @@ AT_CLEANUP
 
 AT_SETUP([Exploding the Stack Size with Malloc])
 
 
 AT_SETUP([Exploding the Stack Size with Malloc])
 
-AT_DATA_STACK_TORTURE([[#define YYSTACK_USE_ALLOCA 0]])
+m4_pushdef([AT_USE_ALLOCA], [[#define YYSTACK_USE_ALLOCA 0]])
+
+AT_DATA_STACK_TORTURE([AT_USE_ALLOCA])
 
 # Below the limit of 200.
 
 # Below the limit of 200.
-AT_CHECK([input 20], 0, [], [ignore])
+AT_PARSER_CHECK([./input 20], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
 # Two enlargements: 2 * 2 * 200.
 # Two enlargements: 2 * 2 * 200.
-AT_CHECK([input 900], 0, [], [ignore])
+AT_PARSER_CHECK([./input 900], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
 # Fails: beyond the limit of 10,000 (which we don't reach anyway since we
 # multiply by two starting at 200 => 5120 is the possible).
 # Fails: beyond the limit of 10,000 (which we don't reach anyway since we
 # multiply by two starting at 200 => 5120 is the possible).
-AT_CHECK([input 10000], 1, [], [ignore])
-
-AT_CLEANUP
-
-
-## ----------------- ##
-## GNU AWK Grammar.  ##
-## ----------------- ##
-
-AT_SETUP([GNU AWK Grammar])
-
-# We have been careful to strip all the actions excepts the
-# mid-rule actions.  We rely on %expect to check that there are
-# indeed 65 SR conflicts.
-#
-# Bison was once wrong, due to an incorrect computation of nullable.
-# It reported 485 SR conflicts!
-
-AT_DATA([[input.y]],
-[[%expect 65
-
-%token FUNC_CALL NAME REGEXP
-%token ERROR
-%token YNUMBER YSTRING
-%token RELOP APPEND_OP
-%token ASSIGNOP MATCHOP NEWLINE CONCAT_OP
-%token LEX_BEGIN LEX_END LEX_IF LEX_ELSE LEX_RETURN LEX_DELETE
-%token LEX_WHILE LEX_DO LEX_FOR LEX_BREAK LEX_CONTINUE
-%token LEX_PRINT LEX_PRINTF LEX_NEXT LEX_EXIT LEX_FUNCTION
-%token LEX_GETLINE LEX_NEXTFILE
-%token LEX_IN
-%token LEX_AND LEX_OR INCREMENT DECREMENT
-%token LEX_BUILTIN LEX_LENGTH
-
-/* Lowest to highest */
-%right ASSIGNOP
-%right '?' ':'
-%left LEX_OR
-%left LEX_AND
-%left LEX_GETLINE
-%nonassoc LEX_IN
-%left FUNC_CALL LEX_BUILTIN LEX_LENGTH
-%nonassoc ','
-%nonassoc MATCHOP
-%nonassoc RELOP '<' '>' '|' APPEND_OP TWOWAYIO
-%left CONCAT_OP
-%left YSTRING YNUMBER
-%left '+' '-'
-%left '*' '/' '%'
-%right '!' UNARY
-%right '^'
-%left INCREMENT DECREMENT
-%left '$'
-%left '(' ')'
-%%
-
-start
-       : opt_nls program opt_nls
-       ;
-
-program
-       : rule
-       | program rule
-       | error
-       | program error
-       | /* empty */
-       ;
-
-rule
-       : LEX_BEGIN {} action
-       | LEX_END {}   action
-       | LEX_BEGIN statement_term
-       | LEX_END statement_term
-       | pattern action
-       | action
-       | pattern statement_term
-       | function_prologue function_body
-       ;
-
-func_name
-       : NAME
-       | FUNC_CALL
-       | lex_builtin
-       ;
-
-lex_builtin
-       : LEX_BUILTIN
-       | LEX_LENGTH
-       ;
-
-function_prologue
-       : LEX_FUNCTION {} func_name '(' opt_param_list r_paren opt_nls
-       ;
-
-function_body
-       : l_brace statements r_brace opt_semi opt_nls
-       | l_brace r_brace opt_semi opt_nls
-       ;
-
-
-pattern
-       : exp
-       | exp ',' exp
-       ;
-
-regexp
-       /*
-        * In this rule, want_regexp tells yylex that the next thing
-        * is a regexp so it should read up to the closing slash.
-        */
-       : '/' {} REGEXP '/'
-       ;
-
-action
-       : l_brace statements r_brace opt_semi opt_nls
-       | l_brace r_brace opt_semi opt_nls
-       ;
-
-statements
-       : statement
-       | statements statement
-       | error
-       | statements error
-       ;
-
-statement_term
-       : nls
-       | semi opt_nls
-       ;
-
-statement
-       : semi opt_nls
-       | l_brace r_brace
-       | l_brace statements r_brace
-       | if_statement
-       | LEX_WHILE '(' exp r_paren opt_nls statement
-       | LEX_DO opt_nls statement LEX_WHILE '(' exp r_paren opt_nls
-       | LEX_FOR '(' NAME LEX_IN NAME r_paren opt_nls statement
-       | LEX_FOR '(' opt_exp semi opt_nls exp semi opt_nls opt_exp r_paren opt_nls statement
-       | LEX_FOR '(' opt_exp semi opt_nls semi opt_nls opt_exp r_paren opt_nls statement
-       | LEX_BREAK statement_term
-       | LEX_CONTINUE statement_term
-       | print '(' expression_list r_paren output_redir statement_term
-       | print opt_rexpression_list output_redir statement_term
-       | LEX_NEXT statement_term
-       | LEX_NEXTFILE statement_term
-       | LEX_EXIT opt_exp statement_term
-       | LEX_RETURN {} opt_exp statement_term
-       | LEX_DELETE NAME '[' expression_list ']' statement_term
-       | LEX_DELETE NAME  statement_term
-       | exp statement_term
-       ;
-
-print
-       : LEX_PRINT
-       | LEX_PRINTF
-       ;
-
-if_statement
-       : LEX_IF '(' exp r_paren opt_nls statement
-       | LEX_IF '(' exp r_paren opt_nls statement
-            LEX_ELSE opt_nls statement
-       ;
-
-nls
-       : NEWLINE
-       | nls NEWLINE
-       ;
-
-opt_nls
-       : /* empty */
-       | nls
-       ;
-
-input_redir
-       : /* empty */
-       | '<' simp_exp
-       ;
-
-output_redir
-       : /* empty */
-       | '>' exp
-       | APPEND_OP exp
-       | '|' exp
-       | TWOWAYIO exp
-       ;
-
-opt_param_list
-       : /* empty */
-       | param_list
-       ;
-
-param_list
-       : NAME
-       | param_list comma NAME
-       | error
-       | param_list error
-       | param_list comma error
-       ;
-
-/* optional expression, as in for loop */
-opt_exp
-       : /* empty */
-       | exp
-       ;
-
-opt_rexpression_list
-       : /* empty */
-       | rexpression_list
-       ;
-
-rexpression_list
-       : rexp
-       | rexpression_list comma rexp
-       | error
-       | rexpression_list error
-       | rexpression_list error rexp
-       | rexpression_list comma error
-       ;
-
-opt_expression_list
-       : /* empty */
-       | expression_list
-       ;
-
-expression_list
-       : exp
-       | expression_list comma exp
-       | error
-       | expression_list error
-       | expression_list error exp
-       | expression_list comma error
-       ;
-
-/* Expressions, not including the comma operator.  */
-exp    : variable ASSIGNOP {} exp
-       | '(' expression_list r_paren LEX_IN NAME
-       | exp '|' LEX_GETLINE opt_variable
-       | exp TWOWAYIO LEX_GETLINE opt_variable
-       | LEX_GETLINE opt_variable input_redir
-       | exp LEX_AND exp
-       | exp LEX_OR exp
-       | exp MATCHOP exp
-       | regexp
-       | '!' regexp %prec UNARY
-       | exp LEX_IN NAME
-       | exp RELOP exp
-       | exp '<' exp
-       | exp '>' exp
-       | exp '?' exp ':' exp
-       | simp_exp
-       | exp simp_exp %prec CONCAT_OP
-       ;
-
-rexp
-       : variable ASSIGNOP {} rexp
-       | rexp LEX_AND rexp
-       | rexp LEX_OR rexp
-       | LEX_GETLINE opt_variable input_redir
-       | regexp
-       | '!' regexp %prec UNARY
-       | rexp MATCHOP rexp
-       | rexp LEX_IN NAME
-       | rexp RELOP rexp
-       | rexp '?' rexp ':' rexp
-       | simp_exp
-       | rexp simp_exp %prec CONCAT_OP
-       ;
-
-simp_exp
-       : non_post_simp_exp
-       /* Binary operators in order of decreasing precedence.  */
-       | simp_exp '^' simp_exp
-       | simp_exp '*' simp_exp
-       | simp_exp '/' simp_exp
-       | simp_exp '%' simp_exp
-       | simp_exp '+' simp_exp
-       | simp_exp '-' simp_exp
-       | variable INCREMENT
-       | variable DECREMENT
-       ;
-
-non_post_simp_exp
-       : '!' simp_exp %prec UNARY
-       | '(' exp r_paren
-       | LEX_BUILTIN
-         '(' opt_expression_list r_paren
-       | LEX_LENGTH '(' opt_expression_list r_paren
-       | LEX_LENGTH
-       | FUNC_CALL '(' opt_expression_list r_paren
-       | variable
-       | INCREMENT variable
-       | DECREMENT variable
-       | YNUMBER
-       | YSTRING
-       | '-' simp_exp    %prec UNARY
-       | '+' simp_exp    %prec UNARY
-       ;
-
-opt_variable
-       : /* empty */
-       | variable
-       ;
-
-variable
-       : NAME
-       | NAME '[' expression_list ']'
-       | '$' non_post_simp_exp
-       ;
-
-l_brace
-       : '{' opt_nls
-       ;
-
-r_brace
-       : '}' opt_nls
-       ;
-
-r_paren
-       : ')'
-       ;
-
-opt_semi
-       : /* empty */
-       | semi
-       ;
-
-semi
-       : ';'
-       ;
-
-comma  : ',' opt_nls
-       ;
-
-%%
-]])
-
-# Pass plenty of options, to exercise plenty of code, even if we
-# don't actually check the output.  But SEGV is watching us, and
-# so might do dmalloc.
-AT_CHECK([[bison --verbose --defines input.y]])
-
-AT_CLEANUP
-
-
-## ----------------- ##
-## GNU Cim Grammar.  ##
-## ----------------- ##
-
-AT_SETUP([GNU Cim Grammar])
-
-# GNU Cim, the GNU Simula 87 Compiler.
-
-# Bison was once wrong, due to an incorrect computation of the RR conflicts.
-# It reported 80 SR && 99 RR conflicts instead of 78/10!!!
-
-AT_DATA([[input.y]],
-[[%union {
-       long token;
-       long ival;
-        long arrdim;
-       double rval;
-       char *ident;
-       char *tval;
-       char stat_decl;
-       }
-
-%token
-        HACTIVATE HAFTER /*HAND*/ HARRAY HAT
-        HBEFORE HBEGIN HBOOLEAN
-        HCHARACTER HCLASS /*HCOMMENT*/ HCONC
-        HDELAY HDO
-        HELSE HEND HEQ /*HEQV*/ HEXTERNAL
-        HFOR
-        HGE HGO HGOTO HGT
-        HHIDDEN
-        HIF /*HIMP*/ HIN HINNER HINSPECT HINTEGER HIS
-        HLABEL HLE HLONG HLT
-        HNAME HNE HNEW HNONE /*HNOT*/ HNOTEXT
-        /*HOR*/ HOTHERWISE
-        HPRIOR HPROCEDURE HPROTECTED
-        HQUA
-        HREACTIVATE HREAL HREF
-        HSHORT HSTEP HSWITCH
-        HTEXT HTHEN HTHIS HTO
-        HUNTIL
-        HVALUE HVAR HVIRTUAL
-        HWHEN HWHILE
-
-        HASSIGNVALUE HASSIGNREF
-        /*HDOT*/ HPAREXPSEPARATOR HLABELSEPARATOR HSTATEMENTSEPARATOR
-        HBEGPAR HENDPAR
-        HEQR HNER
-        HADD HSUB HMUL HDIV HINTDIV HEXP
-       HDOTDOTDOT
-
-%token <ident> HIDENTIFIER
-%token <ival> HBOOLEANKONST HINTEGERKONST HCHARACTERKONST
-%token <rval> HREALKONST
-%token <tval> HTEXTKONST
-
-%type <tval> EXT_IDENT
-%type <stat_decl> DECLSTATEMENT MODULSTATEMENT MBEE_DECLSTMS MBEE_DECLSTMSU
-%type <stat_decl> MODULS
-%type <ident> EXPRESSION_SIMP MBEE_ARG_R_PT
-%type <arrdim> BAUND_PAIR_LIST
-
-%right <token> HASSIGN
-%left   HORELSE
-%left   HANDTHEN
-%left   HEQV
-%left   HIMP
-%left   HOR
-%left   HAND
-
-%left   HNOT
-
-%left <token> HVALRELOPERATOR HREFRELOPERATOR HOBJRELOPERATOR
-
-%left  HCONC
-
-%left <token> HTERMOPERATOR
-%left <token> UNEAR
-%left <token> HFACTOROPERATOR
-%left         HPRIMARYOPERATOR
-
-%left   HQUA
-
-%left   HDOT
-
-%start  MAIN_MODULE
-%%
-/* GRAMATIKK FOR PROGRAM MODULES */
-MAIN_MODULE     :       {        categ=CLOCAL; mout(MBLOCK);
-                                  beginBlock(KBLOKK);separat_comp=FALSE;}
-                       MODULS  { endBlock(NULL,CCNO);   mout(MENDBLOCK);}
-               |       error HSTATEMENTSEPARATOR MBEE_DECLSTMS
-               ;
-EXT_DECLARATION        :       HEXTERNAL
-                       MBEE_TYPE
-                       HPROCEDURE
-                               { MBEENEWBLOCK();
-                                 kind=KPROC;}
-                       EXT_LIST
-               |
-                       HEXTERNAL
-                       HIDENTIFIER
-                       HPROCEDURE
-                               { MBEENEWBLOCK();
-                                 type=TNOTY;
-                                 kind=KPROC;
-                                 if($2==Ckind)categ=CCPROC;else
-                                 yerror (1);
-                                  ysensitive=sensitive;
-                                  sensitive=ON;}
-                       HIDENTIFIER { $<ident>$=$5;
-                                  sensitive=ysensitive;}
-                       EXTERNAL_KIND_ITEM
-                               { categ=CLOCAL;}
-               |       HEXTERNAL
-                       HCLASS
-                               { MBEENEWBLOCK();
-                                 kind=KCLASS;}
-                       EXT_LIST
-
-               ;
-EXTERNAL_KIND_ITEM:    EXT_IDENT
-                       HOBJRELOPERATOR
-                               { if($2!=HIS)yerror (2);}
-                       MBEE_TYPE HPROCEDURE
-                       HIDENTIFIER
-                               {         regDecl($6, type, KPROC, CCPROC);
-                                          beginBlock(kind);}
-                        HEADING EMPTY_BLOCK
-                               { categ=CLOCAL;
-                                 endBlock($1==NULL?$<ident>0:tag($1),CCCPROC);}
-/*             |
-                       EXT_IDENT
-                               { if($1!=NULL)yerror (3);
-                                 regDecl($0, type, kind, categ);}
-                       MBEE_REST_EXT_LIST
-                               { endBlock(NULL,CCNO);}
-               ;
-MBEE_REST_EXT_LIST:    /* EMPTY
-               |       HPAREXPSEPARATOR EXT_KIND_LIST
-               ;
-EXT_KIND_LIST  :       EXT_KIND_ITEM
-               |       EXT_KIND_LIST HPAREXPSEPARATOR EXT_KIND_ITEM
-               ;
-EXT_KIND_ITEM  :       HIDENTIFIER
-                       EXT_IDENT
-                               { if($2!=NULL)yerror (3);
-                                 regDecl($1, type, kind, categ);}*/
-               ;
-EMPTY_BLOCK    :       /*EMPT*/
-               |       HBEGIN HEND
-               ;
-EXT_LIST       :       EXT_ITEM
-               |       EXT_LIST HPAREXPSEPARATOR EXT_ITEM
-               ;
-EXT_ITEM       :       HIDENTIFIER
-                       EXT_IDENT
-                               { lesinn_external_spec($1,$2, kind);}
-               ;
-EXT_IDENT      :       /* EMPTY */ { $$=NULL;}
-               |       HVALRELOPERATOR { if($1!=HEQ)yerror (9);
-                                          external=TRUE;}
-                       HTEXTKONST { $$=$3;external=FALSE;}
-               ;
-/* GRAMATIKK FOR TYPER */
-NO_TYPE         :       /*EMPT*/        { type=TNOTY;}
-                ;
-MBEE_TYPE       :       NO_TYPE
-                |       TYPE
-                ;
-TYPE            :       HREF HBEGPAR
-                        HIDENTIFIER
-                                { prefquantident=$3;
-                                          type=TREF;}
-                        HENDPAR
-                |       HTEXT           { type=TTEXT;}
-                |       HBOOLEAN        { type=TBOOL;}
-                |       HCHARACTER      { type=TCHAR;}
-                |       HSHORT HINTEGER { type=TSHORT;}
-                |       HINTEGER        { type=TINTG;}
-                |       HREAL           { type=TREAL;}
-                |       HLONG HREAL     { type=TLONG;}
-                ;
-
-/* GRAMATIKK FOR DEL AV SETNINGER */
-MBEE_ELSE_PART  :       /*EMPT*/
-/*             |       HELSE
-                       HIF
-                        EXPRESSION
-                        HTHEN   {                mout(MELSE);
-                                                 mout(MIF);
-                                  OBSBLOCK();}
-                        BLOCK   { MBEEENDBLOCK();}
-                        MBEE_ELSE_PART          { mout(MENDIF);}*/
-                |       HELSE   { OBSBLOCK();     mout(MELSE);}
-                        BLOCK   { MBEEENDBLOCK();}
-                ;
-FOR_LIST        :       FOR_LIST_ELEMENT        { mout(MENDSEP);
-                                                  mout(MLISTSEP);}
-                |       FOR_LIST_ELEMENT
-                        HPAREXPSEPARATOR
-                        FOR_LIST                { mout(MLISTSEP);}
-                ;
-FOR_LIST_ELEMENT:       EXPRESSION
-                        MBEE_F_L_EL_R_PT
-                ;
-MBEE_F_L_EL_R_PT:       /*EMPT*/
-                |       HWHILE
-                        EXPRESSION              { mout(MFORWHILE);}
-                |       HSTEP
-                        EXPRESSION
-                        HUNTIL
-                        EXPRESSION              { mout(MUNTIL);
-                                                  mout(MSTEP);}
-                ;
-GOTO            :       HGO
-                        HTO
-                |       HGOTO
-                ;
-CONN_STATE_R_PT :       WHEN_CLAUSE_LIST
-                |       HDO   {   beginBlock(KCON);   mout(MDO);
-                              OBSBLOCK(); }
-                        BLOCK {   endBlock(NULL,CCNO);
-                                  MBEEENDBLOCK();  mout(MENDDO);}
-                ;
-WHEN_CLAUSE_LIST:       HWHEN
-                        HIDENTIFIER
-                        HDO    {   beginBlock(KCON);  mout(MIDENTIFIER);
-                                   OBSBLOCK();     moutId($2);
-                                                  mout(MWHEN);}
-                        BLOCK  {   endBlock(NULL,CCNO);
-                              MBEEENDBLOCK(); mout(MENDWHEN);}
-                |       WHEN_CLAUSE_LIST
-                        HWHEN
-                        HIDENTIFIER
-                        HDO    { beginBlock(KCON);        mout(MIDENTIFIER);
-                                 OBSBLOCK();       moutId($3);
-                                                  mout(MWHEN);}
-                        BLOCK  { endBlock(NULL,CCNO);
-                              MBEEENDBLOCK();    mout(MENDWHEN);}
-                ;
-MBEE_OTWI_CLAUS :       /*EMPT*/
-                |       HOTHERWISE {OBSBLOCK();    mout(MOTHERWISE);}
-
-                        BLOCK      {MBEEENDBLOCK();mout(MENDOTHERWISE);}
-                ;
-ACTIVATOR      :       HACTIVATE               { mout(MBOOLEANKONST);
-                                                 moutIval(FALSE);}
-               |       HREACTIVATE             { mout(MBOOLEANKONST);
-                                                 moutIval(TRUE);}
-               ;
-SCHEDULE       :       /*EMPT*/                { mout(MCHARACTERKONST);
-                                                 moutIval(DIRECT);
-                                                 mout(MINTEGERKONST);
-                                                 moutIval(0);
-                                                 mout(MNONE);
-                                                 mout(MBOOLEANKONST);
-                                                 moutIval(FALSE);}
-               |       ATDELAY EXPRESSION      { mout(MNONE);}
-                       PRIOR
-               |       BEFOREAFTER             { mout(MINTEGERKONST);
-                                                 moutIval(0);}
-                       EXPRESSION              { mout(MBOOLEANKONST);
-                                                 moutIval(FALSE);}
-               ;
-ATDELAY                :       HAT                     { mout(MCHARACTERKONST);
-                                                 moutIval(AT);}
-               |       HDELAY                  { mout(MCHARACTERKONST);
-                                                 moutIval(DELAYS);}
-               ;
-BEFOREAFTER    :       HBEFORE                 { mout(MCHARACTERKONST);
-                                                 moutIval(BEFORE);}
-               |       HAFTER                  { mout(MCHARACTERKONST);
-                                                 moutIval(AFTER);}
-               ;
-PRIOR          :       /*EMPT*/                { mout(MBOOLEANKONST);
-                                                 moutIval(FALSE);}
-               |       HPRIOR                  { mout(MBOOLEANKONST);
-                                                 moutIval(TRUE);}
-               ;
-/* GRAMATIKK FOR SETNINGER OG DEKLARASJONER */
-MODULSTATEMENT  :       HWHILE
-                        EXPRESSION
-                        HDO     { STOPOBSBLOCK(); mout(MWHILE);
-                                  OBSBLOCK();}
-                        BLOCK   { MBEEENDBLOCK(); mout(MENDWHILE);
-                                                         $$=STATEMENT;}
-               |       HIF
-                        EXPRESSION
-                        HTHEN   { STOPOBSBLOCK(); mout(MIF);
-                                  OBSBLOCK();}
-                        BLOCK   { MBEEENDBLOCK();}
-                        MBEE_ELSE_PART          { mout(MENDIF);
-                                                         $$=STATEMENT;}
-               |       HFOR
-                        HIDENTIFIER
-                        HASSIGN { STOPOBSBLOCK(); mout(MIDENTIFIER);
-                                                  moutId($2);}
-                        FOR_LIST
-                        HDO     { beginBlock(KFOR);
-                        if($3==HASSIGNVALUE)      mout(MFOR);
-                                        else      mout(MFORR);
-                                  OBSBLOCK();     mout(MFORDO);}
-                        BLOCK   { MBEEENDBLOCK();
-                                  endBlock(NULL,CCNO); mout(MENDFOR);
-                                                         $$=STATEMENT;}
-               |       GOTO
-                        EXPRESSION              { mout(MGOTO);
-                                  STOPOBSBLOCK();        $$=STATEMENT;}
-               |       HINSPECT
-                        EXPRESSION              { mout(MINSPECT);
-                                  STOPOBSBLOCK();
-                                  beginBlock(KINSP);}
-                        CONN_STATE_R_PT
-                                { endBlock(NULL,CCNO);}
-                        MBEE_OTWI_CLAUS         { mout(MENDINSPECT);
-                                                         $$=STATEMENT;}
-               |       HINNER  { STOPOBSBLOCK(); mout(MINNER);
-                                  regInner();            $$=STATEMENT;}
-                |       HIDENTIFIER
-                        HLABELSEPARATOR
-                                { STOPOBSBLOCK();
-                                  regDecl($1, TLABEL, KSIMPLE, categ);    mout(MLABEL);
-                                                  moutId($1);
-                                                  mout(MENDLABEL);}
-                        DECLSTATEMENT   { if($4<=DECLARATION)
-                                            { yerror (27);
-                                              $$=DECLARATION;}
-                                          else $$=$4;}
-                |       EXPRESSION_SIMP
-                        HBEGIN
-                                { $<ident>$=$1; }
-                       IMPORT_SPEC_MODULE
-                               { mout(MPRBLOCK);
-                                 prefquantident=$1;
-                                  beginBlock(KPRBLK);}
-                        MBEE_DECLSTMS
-                        HEND    { endBlock(NULL,CCNO); mout(MENDPRBLOCK);
-                                                          $$=STATEMENT;}
-               |       EXPRESSION_SIMP HBEGIN error HSTATEMENTSEPARATOR
-                        MBEE_DECLSTMS HEND              { $$=STATEMENT;
-                                endBlock(NULL,CCNO); mout(MENDPRBLOCK);}
-               |       EXPRESSION_SIMP HBEGIN error HEND
-                                                       { $$=STATEMENT;
-                                endBlock(NULL,CCNO); mout(MENDPRBLOCK);}
-
-                |       EXPRESSION_SIMP
-                                { STOPOBSBLOCK();         $$=STATEMENT;
-                                                  mout(MENDASSIGN);}
-               |       ACTIVATOR EXPRESSION SCHEDULE
-                                               {         $$=STATEMENT;
-                                                 mout(MENDSEP);
-                                                 mout(MARGUMENTSEP);
-                                                 mout(MARGUMENTSEP);
-                                                 mout(MARGUMENTSEP);
-                                                 mout(MARGUMENTSEP);
-                                                 mout(MARGUMENTSEP);
-                                                 mout(MARGUMENTSEP);
-                                                 mout(MARGUMENT);
-                                                 moutId(activateid);
-                                                 mout(MENDASSIGN);}
-                |       HBEGIN
-                                { STOPOBSBLOCK();
-                                  OBSBLOCK();}
-                        MBEE_DECLSTMS
-                        HEND    { MBEEENDBLOCK();         $$=STATEMENT;}
-               |       MBEE_TYPE HPROCEDURE
-                        HIDENTIFIER
-                                { MBEENEWBLOCK(); mout(MPROCEDURE);
-                                          regDecl($3, type, KPROC, categ);
-                                          beginBlock(KPROC);}
-                        HEADING BLOCK   { endBlock(NULL,CCNO); $$=DECLARATION;
-                                                  mout(MENDPROCEDURE);}
-               |       HIDENTIFIER
-                       HCLASS
-                        NO_TYPE
-                               { $<ident>$=$1; }
-                       IMPORT_SPEC_MODULE
-                        HIDENTIFIER
-                               { prefquantident=$1;
-                                 mout(MCLASS);
-                                          regDecl($6, TNOTY, KCLASS, categ);
-                                          beginBlock(KCLASS);}
-                        HEADING
-                        BLOCK           { endBlock(NULL,CCNO); $$=DECLARATION;
-                                                  mout(MENDCLASS);}
-                |       HCLASS
-                        NO_TYPE
-                        HIDENTIFIER
-                                { prefquantident=0;
-                                  MBEENEWBLOCK(); mout(MCLASS);
-                                          regDecl($3, TNOTY, KCLASS, categ);
-                                          beginBlock(KCLASS);}
-                        HEADING
-                        BLOCK           { endBlock(NULL,CCNO); $$=DECLARATION;
-                                                  mout(MENDCLASS);}
-                |       EXT_DECLARATION                        { $$=EXTDECLARATION;}
-               |       /*EMPT*/{ STOPOBSBLOCK();         $$=EMPTYSTATEMENT;}
-                ;
-IMPORT_SPEC_MODULE:            { MBEENEWBLOCK();
-                                  kind=KCLASS;
-                                 if($<ident>0==simsetident &&
-                                    findDecl(simsetident,cblock,FALSE)==NULL)
-                                   lesinn_external_spec(simsetident,
-                                       SIMSETATRFILE, kind);
-                                 if($<ident>0==simulationident && findDecl(
-                                   simulationident,cblock,FALSE)==NULL)
-                                   lesinn_external_spec(simulationident,
-                                       SIMULATIONATRFILE, kind);
-                                 if(($<ident>0==fileident && findDecl(
-                                     fileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==outfileident && findDecl(
-                                     outfileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==infileident && findDecl(
-                                     infileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==directfileident && findDecl(
-                                     directfileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==printfileident && findDecl(
-                                     printfileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==bytefileident && findDecl(
-                                     bytefileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==inbytefileident && findDecl(
-                                     inbytefileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==outbytefileident && findDecl(
-                                     outbytefileident,cblock,FALSE)==NULL) ||
-                                    ($<ident>0==directbytefileident && findDecl(
-                                     directbytefileident,cblock,FALSE)==NULL))
-                                   lesinn_external_spec(fileident,
-                                       FILEATRFILE, kind);}
-               ;
-DECLSTATEMENT  :       MODULSTATEMENT
-               |       TYPE
-                        HIDENTIFIER
-                       MBEE_CONSTANT
-                        HPAREXPSEPARATOR
-                                { MBEENEWBLOCK();
-                                          kind=KSIMPLE;
-                                          regDecl($2, type, KSIMPLE, categ);
-                                         categ=CLOCAL;}
-                        IDENTIFIER_LISTC                { $$=DECLARATION;}
-                |       TYPE
-                        HIDENTIFIER
-                       MBEE_CONSTANT
-                                { MBEENEWBLOCK();
-                                          regDecl($2, type, KSIMPLE, categ);
-                                         categ=CLOCAL;   $$=DECLARATION;}
-                |       MBEE_TYPE
-                        HARRAY  { MBEENEWBLOCK();
-                                          kind=KARRAY;}
-                        ARR_SEGMENT_LIST                { $$=DECLARATION;}
-                |       HSWITCH
-                        HIDENTIFIER
-                        HASSIGN { MBEENEWBLOCK(); mout(MIDENTIFIER);
-                                                  moutId($2);
-                                          regDecl($2, TLABEL, KARRAY, categ);}
-                        SWITCH_LIST                     { $$=DECLARATION;
-                                                   mout(MSWITCH);
-                                                   mout(MENDSWITCH);}
-                ;
-BLOCK           :       DECLSTATEMENT   { if($1<=DECLARATION)yerror (29);}
-                |       HBEGIN MBEE_DECLSTMS HEND
-               |       HBEGIN error HSTATEMENTSEPARATOR MBEE_DECLSTMS HEND
-               |       HBEGIN error HEND
-               ;
-MBEE_DECLSTMS   :       MBEE_DECLSTMSU  { if($1<=DECLARATION)yerror (28);
-                                         $$=$1;}
-                ;
-MBEE_DECLSTMSU  :       DECLSTATEMENT   { $$=$1;}
-                |       MBEE_DECLSTMSU
-                        HSTATEMENTSEPARATOR
-                        DECLSTATEMENT   { if($1>=STATEMENT && $3<=DECLARATION)
-                                            yerror (26);
-                                          $$=$3;}
-                ;
-MODULS         :       MODULSTATEMENT  { if($1==DECLARATION)
-                                         {separat_comp=TRUE;gettimestamp();}
-                                          $$=$1;}
-               |       MODULS HSTATEMENTSEPARATOR MODULSTATEMENT
-                                       { if($1>=STATEMENT && $3<=DECLARATION)
-                                            yerror (26);else
-                                                 if($1>=STATEMENT
-                                            && $3!=EMPTYSTATEMENT)yerror (25);
-                                          if(separat_comp && $3==STATEMENT)
-                                             yerror (25);
-                                          if($3==DECLARATION && !separat_comp)
-                                         {separat_comp=TRUE;gettimestamp();}
-                                         $$=$3;}
-               ;
-/* GRAMATIKK FOR DEL AV DEKLARASJONER */
-ARR_SEGMENT_LIST:       ARR_SEGMENT
-                |       ARR_SEGMENT_LIST
-                        HPAREXPSEPARATOR
-                        ARR_SEGMENT
-                ;
-ARR_SEGMENT    :       ARRAY_SEGMENT
-                        HBEGPAR
-                        BAUND_PAIR_LIST HENDPAR { mout(MARRAY);
-                                                  mout(MENDARRAY);
-                                                  setArrayDim($3);}
-                ;
-ARRAY_SEGMENT   :       ARRAY_SEGMENT_EL        { mout(MENDSEP);
-                                                  mout(MARRAYSEP);}
-
-                |       ARRAY_SEGMENT_EL
-                        HPAREXPSEPARATOR
-                        ARRAY_SEGMENT           { mout(MARRAYSEP);}
-                ;
-ARRAY_SEGMENT_EL:       HIDENTIFIER             { mout(MIDENTIFIER);
-                                                  moutId($1);
-                                                  regDecl($1, type, kind, categ);
-                                  if(lastArray==NULL)
-                                     lastArray=cblock->lastparloc;}
-                ;
-BAUND_PAIR_LIST :       BAUND_PAIR              { mout(MENDSEP);
-                                                  mout(MBOUNDSEP);
-                                                  $$=1;}
-                |       BAUND_PAIR
-                        HPAREXPSEPARATOR
-                        BAUND_PAIR_LIST         { mout(MBOUNDSEP);
-                                                  $$=$3+1;}
-                ;
-BAUND_PAIR      :       EXPRESSION
-                        HLABELSEPARATOR
-                        EXPRESSION              { mout(MBOUNDPARSEP);}
-                ;
-SWITCH_LIST     :       EXPRESSION              { mout(MENDSEP);
-                                                  mout(MSWITCHSEP);}
-                |       EXPRESSION
-                        HPAREXPSEPARATOR
-                        SWITCH_LIST             { mout(MSWITCHSEP);}
-                ;
-HEADING         :       MBEE_FMAL_PAR_P HSTATEMENTSEPARATOR { kind=KNOKD;}
-                        MBEE_MODE_PART  { categ=CSPEC;}
-                        MBEE_SPEC_PART  { kind=KNOKD;}
-                        MBEE_PROT_PART  { categ=CVIRT;}
-                        MBEE_VIRT_PART
-                                        { categ=CLOCAL;}
-                ;
-MBEE_FMAL_PAR_P :       /*EMPT*/
-                |       FMAL_PAR_PART
-                ;
-FMAL_PAR_PART   :       HBEGPAR NO_TYPE
-                        MBEE_LISTV HENDPAR
-                ;
-MBEE_LISTV      :       /*EMPT*/
-                |       LISTV
-                ;
-LISTV           :       HIDENTIFIER     { regDecl($1, type, KNOKD, CDEFLT);}
-                |      FPP_CATEG HDOTDOTDOT      { regDecl(varargsid, TVARARGS, KNOKD, categ);}
-                |       HIDENTIFIER     { regDecl($1, type, KNOKD, CDEFLT);}
-                        HPAREXPSEPARATOR LISTV
-                |       FPP_SPEC
-                |       FPP_SPEC
-                        HPAREXPSEPARATOR LISTV
-                ;
-FPP_HEADING     :       HBEGPAR NO_TYPE
-                        FPP_MBEE_LISTV HENDPAR
-                ;
-FPP_MBEE_LISTV  :       /*EMPT*/
-                |       FPP_LISTV
-                ;
-FPP_LISTV       :      FPP_CATEG HDOTDOTDOT      { regDecl(varargsid, TVARARGS, KNOKD, categ);}
-                |       FPP_SPEC
-                |       FPP_SPEC
-                        HPAREXPSEPARATOR LISTV
-                ;
-FPP_SPEC        :       FPP_CATEG SPECIFIER HIDENTIFIER
-                                       { regDecl($3, type, kind, categ);}
-               |       FPP_CATEG FPP_PROC_DECL_IN_SPEC
-               ;
-FPP_CATEG       :       HNAME HLABELSEPARATOR
-                                       { categ=CNAME;}
-                |       HVALUE HLABELSEPARATOR
-                                       { categ=CVALUE;}
-                |       HVAR HLABELSEPARATOR
-                                       { categ=CVAR;}
-                |       /*EMPT*/       { categ=CDEFLT;}
-                ;
-FPP_PROC_DECL_IN_SPEC: MBEE_TYPE HPROCEDURE
-                        HIDENTIFIER
-                                       { $<ival>$=categ;
-                                          regDecl($3, type, KPROC, categ);
-                                          beginBlock(KPROC);}
-                        FPP_HEADING
-                                       { categ=$<ival>4; /* M} settes tilbake*/}
-                               { endBlock(NULL,CCNO);}
-               ;
-IDENTIFIER_LISTV:       HIDENTIFIER     { regDecl($1, type, kind, categ);}
-                |      HDOTDOTDOT {      regDecl(varargsid, TVARARGS, kind, categ);}
-                |       HIDENTIFIER     { regDecl($1, type, kind, categ);}
-                        HPAREXPSEPARATOR IDENTIFIER_LISTV
-                ;
-MBEE_MODE_PART  :       /*EMPT*/
-                |       MODE_PART
-                ;
-MODE_PART       :       NAME_PART
-                |       VALUE_PART
-                |       VAR_PART
-                |       NAME_PART VALUE_PART
-                |       VALUE_PART NAME_PART
-                |       NAME_PART VAR_PART
-                |       VAR_PART NAME_PART
-                |       VALUE_PART VAR_PART
-                |       VAR_PART VALUE_PART
-                |       VAR_PART NAME_PART VALUE_PART
-                |       NAME_PART VAR_PART VALUE_PART
-                |       NAME_PART VALUE_PART VAR_PART
-                |       VAR_PART VALUE_PART NAME_PART
-                |       VALUE_PART VAR_PART NAME_PART
-                |       VALUE_PART NAME_PART VAR_PART
-                ;
-NAME_PART       :       HNAME           { categ=CNAME;}
-                        IDENTIFIER_LISTV
-                        HSTATEMENTSEPARATOR
-                ;
-VAR_PART        :       HVAR            { categ=CVAR;}
-                        IDENTIFIER_LISTV
-                        HSTATEMENTSEPARATOR
-                ;
-VALUE_PART      :       HVALUE          { categ=CVALUE;}
-                        IDENTIFIER_LISTV HSTATEMENTSEPARATOR
-                ;
-MBEE_SPEC_PART  :       /*EMPT*/
-                |       SPEC_PART
-                ;
-SPEC_PART       :       ONE_SPEC
-                |       SPEC_PART ONE_SPEC
-                ;
-ONE_SPEC       :       SPECIFIER IDENTIFIER_LIST HSTATEMENTSEPARATOR
-               |       NO_TYPE HPROCEDURE HIDENTIFIER HOBJRELOPERATOR
-                         { if($4!=HIS) yerror (8);}
-                       PROC_DECL_IN_SPEC HSTATEMENTSEPARATOR
-                |       FPP_PROC_DECL_IN_SPEC HSTATEMENTSEPARATOR
-                |       MBEE_TYPE HPROCEDURE HIDENTIFIER HSTATEMENTSEPARATOR
-                                       { yerror (45);}
-                |       MBEE_TYPE HPROCEDURE HIDENTIFIER HPAREXPSEPARATOR
-                        IDENTIFIER_LIST HSTATEMENTSEPARATOR
-                                       { yerror (45);}
-               ;
-SPECIFIER       :       TYPE            { kind=KSIMPLE;}
-                |       MBEE_TYPE
-                        HARRAY          { kind=KARRAY;}
-                |       HLABEL          { type=TLABEL;
-                                          kind=KSIMPLE;}
-                |       HSWITCH         { type=TLABEL;
-                                          kind=KARRAY;}
-                ;
-PROC_DECL_IN_SPEC:     MBEE_TYPE HPROCEDURE
-                        HIDENTIFIER
-                                       { $<ival>$=categ;
-                                          regDecl($3, type, KPROC, categ);
-                                          beginBlock(KPROC);}
-                        HEADING
-                                       { categ=$<ival>4; /* M} settes tilbake*/}
-                       MBEE_BEGIN_END
-                               { endBlock(NULL,CCNO);}
-               ;
-MBEE_BEGIN_END :       /* EMPTY */
-               |       HBEGIN HEND
-               ;
-MBEE_PROT_PART  :       /*EMPT*/
-                |       PROTECTION_PART
-                ;
-PROTECTION_PART :       PROT_SPECIFIER IDENTIFIER_LIST
-                        HSTATEMENTSEPARATOR
-                |       PROTECTION_PART  PROT_SPECIFIER
-                        IDENTIFIER_LIST HSTATEMENTSEPARATOR
-                ;
-PROT_SPECIFIER  :       HHIDDEN         { categ=CHIDEN;}
-                |       HPROTECTED      { categ=CPROT;}
-                |       HHIDDEN
-                        HPROTECTED      { categ=CHIPRO;}
-                |       HPROTECTED
-                        HHIDDEN         { categ=CHIPRO;}
-                ;
-MBEE_VIRT_PART  :       /*EMPT*/
-                |       VIRTUAL_PART
-                ;
-VIRTUAL_PART    :       HVIRTUAL
-                        HLABELSEPARATOR
-                        MBEE_SPEC_PART
-                ;
-IDENTIFIER_LIST :       HIDENTIFIER     { regDecl($1, type, kind, categ);}
-                |       IDENTIFIER_LIST HPAREXPSEPARATOR
-                        HIDENTIFIER     { regDecl($3, type, kind, categ);}
-                ;
-IDENTIFIER_LISTC:       HIDENTIFIER
-                       MBEE_CONSTANT   { regDecl($1, type, kind, categ);
-                                         categ=CLOCAL;}
-                |       IDENTIFIER_LISTC HPAREXPSEPARATOR
-                        HIDENTIFIER
-                       MBEE_CONSTANT   { regDecl($3, type, kind, categ);
-                                         categ=CLOCAL;}
-                ;
-MBEE_CONSTANT  :       /* EMPTY */
-               |       HVALRELOPERATOR
-                               { MBEENEWBLOCK();
-                           if($1!=HEQ) yerror (8);
-                                         if(type==TREF)yerror (7);
-                                         categ=CCONSTU;
-                                                 mout(MIDENTIFIER);
-                                                 moutId($<token>0);}
-                       EXPRESSION              { mout(MASSIGN);
-                                                 mout(MCONST);}
-               ;
-
-/* GRAMATIKK FOR UTTRYKK */
-EXPRESSION      :       EXPRESSION_SIMP {}
-                |       HIF
-                        EXPRESSION
-                        HTHEN
-                        EXPRESSION
-                        HELSE
-                        EXPRESSION              { mout(MELSEE);
-                                                  mout(MIFE);}
-                ;
-EXPRESSION_SIMP :      EXPRESSION_SIMP
-                       HASSIGN
-                       EXPRESSION { if($2==HASSIGNREF)mout(MASSIGNR);
-                                          else    mout(MASSIGN);$$=NULL;}
-               |
-
-                       EXPRESSION_SIMP
-                        HCONC
-                        EXPRESSION_SIMP         { mout(MCONC);$$=NULL;}
-                |       EXPRESSION_SIMP HOR
-                        HELSE
-                        EXPRESSION_SIMP
-                        %prec HORELSE           { mout(MORELSEE);$$=NULL;}
-                |       EXPRESSION_SIMP HAND
-                        HTHEN
-                        EXPRESSION_SIMP
-                        %prec HANDTHEN          { mout(MANDTHENE);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HEQV EXPRESSION_SIMP    { mout(MEQV);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HIMP EXPRESSION_SIMP    { mout(MIMP);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HOR EXPRESSION_SIMP     { mout(MOR);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HAND EXPRESSION_SIMP    { mout(MAND);$$=NULL;}
-                |       HNOT EXPRESSION_SIMP    { mout(MNOT);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HVALRELOPERATOR
-                        EXPRESSION_SIMP
-                                { switch($2)
-                                    {   case HEQ: mout(MEQ);break;
-                                        case HNE: mout(MNE);break;
-                                        case HLT: mout(MLT);break;
-                                        case HLE: mout(MLE);break;
-                                        case HGT: mout(MGT);break;
-                                        case HGE: mout(MGE);break;
-                                    }$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HREFRELOPERATOR
-                        EXPRESSION_SIMP
-                                { if($2==HNER)    mout(MNER);
-                                        else      mout(MEQR);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HOBJRELOPERATOR
-                        EXPRESSION_SIMP
-                                { if($2==HIS)     mout(MIS);
-                                        else      mout(MINS);$$=NULL;}
-                |       HTERMOPERATOR
-                        EXPRESSION_SIMP %prec UNEAR
-                                { if($1==HADD)    mout(MUADD);
-                                        else      mout(MUSUB);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HTERMOPERATOR
-                        EXPRESSION_SIMP
-                                { if($2==HADD)    mout(MADD);
-                                        else      mout(MSUB);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HFACTOROPERATOR
-                        EXPRESSION_SIMP
-                                { if($2==HMUL)    mout(MMUL); else
-                                  if($2==HDIV)    mout(MDIV);
-                                        else      mout(MINTDIV);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HPRIMARYOPERATOR
-                        EXPRESSION_SIMP         { mout(MPRIMARY);$$=NULL;}
-                |       HBEGPAR
-                        EXPRESSION HENDPAR      { mout(MNOOP);$$=NULL;}
-                |       HTEXTKONST              { mout(MTEXTKONST);
-                                                  moutTval($1);$$=NULL;}
-                |       HCHARACTERKONST         { mout(MCHARACTERKONST);
-                                                  moutIval($1);$$=NULL;}
-                |       HREALKONST              { mout(MREALKONST);
-                                                  moutRval($1);$$=NULL;}
-                |       HINTEGERKONST           { mout(MINTEGERKONST);
-                                                  moutIval($1);$$=NULL;}
-                |       HBOOLEANKONST           { mout(MBOOLEANKONST);
-                                                  moutIval($1);$$=NULL;}
-                |       HNONE                   { mout(MNONE);$$=NULL;}
-                |       HIDENTIFIER
-                                { $<ident>$=$1;}
-                        MBEE_ARG_R_PT
-                |       HTHIS HIDENTIFIER       { mout(MTHIS);
-                                                  moutId($2);$$=NULL;}
-                |       HNEW
-                        HIDENTIFIER
-                        ARG_R_PT                { mout(MNEWARG);
-                                                  moutId($2);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HDOT
-                        EXPRESSION_SIMP         { mout(MDOT);$$=NULL;}
-                |       EXPRESSION_SIMP
-                        HQUA HIDENTIFIER        { mout(MQUA);
-                                                  moutId($3);$$=NULL;}
-                ;
-ARG_R_PT        :       /*EMPTY*/               { mout(MENDSEP);}
-                |       HBEGPAR
-                        ARGUMENT_LIST HENDPAR
-                ;
-MBEE_ARG_R_PT   :       /*EMPTY*/               { mout(MIDENTIFIER);
-                                                  moutId($<ident>0);
-                                                 $$=$<ident>0;}
-                |       HBEGPAR
-                        ARGUMENT_LIST HENDPAR   { mout(MARGUMENT);
-                                                  moutId($<ident>0);}
-                ;
-ARGUMENT_LIST   :       EXPRESSION              { mout(MENDSEP);
-                                                  mout(MARGUMENTSEP);}
-                |       EXPRESSION
-                        HPAREXPSEPARATOR
-                        ARGUMENT_LIST           { mout(MARGUMENTSEP);}
-                ;
-%%
-]])
-
-# Pass plenty of options, to exercise plenty of code, even if we
-# don't actually check the output.  But SEGV is watching us, and
-# so might do dmalloc.
-AT_CHECK([[bison --verbose --defines input.y]], 0, [],
-[[input.y contains 78 shift/reduce conflicts and 10 reduce/reduce conflicts.
-]])
+AT_PARSER_CHECK([./input 10000], 2, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
 
 
-AT_CHECK([[grep '^State.*contains' input.output]], 0,
-[[State 64 contains 14 shift/reduce conflicts.
-State 164 contains 1 shift/reduce conflict.
-State 201 contains 33 shift/reduce conflicts and 4 reduce/reduce conflicts.
-State 206 contains 1 shift/reduce conflict.
-State 240 contains 1 shift/reduce conflict.
-State 335 contains 9 shift/reduce conflicts and 2 reduce/reduce conflicts.
-State 356 contains 1 shift/reduce conflict.
-State 360 contains 9 shift/reduce conflicts and 2 reduce/reduce conflicts.
-State 427 contains 9 shift/reduce conflicts and 2 reduce/reduce conflicts.
+AT_DATA_STACK_TORTURE([AT_USE_ALLOCA],
+[[%define api.push-pull both
 ]])
 ]])
+AT_PARSER_CHECK([./input 20], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+AT_PARSER_CHECK([./input 900], 0, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+AT_PARSER_CHECK([./input 10000], 2, [], [ignore],
+                [[VALGRIND_OPTS="$VALGRIND_OPTS --log-fd=1"]])
+
+m4_popdef([AT_USE_ALLOCA])
 
 AT_CLEANUP
 
 AT_CLEANUP