Package: bison
Version: 1:2.3.dfsg-4
Severity: normal
Hi:
The following program fails to produce a "syntax error" as it
should. If it's built with byacc then it does fail as expected.
$ make a
yacc a.y
conflicts: 1 shift/reduce
mv -f y.tab.c a.c
cc -c -o a.o a.c
cc a.o -o a
rm a.o a.c
$ ./a
$ rm a
$ make YACC=byacc a
byacc a.y
byacc: 1 shift/reduce conflict.
mv -f y.tab.c a.c
cc -c -o a.o a.c
cc a.o -o a
rm a.o a.c
$ ./a
syntax error
$
Cheers,
-- System Information
Debian Release: 3.1
Kernel Version: Linux gondolin 2.6.17-rc4 #1 SMP PREEMPT Wed May 17 17:28:00
EST 2006 i686 GNU/Linux
Versions of the packages bison depends on:
ii libc6 2.3.2.ds1-22sa GNU C Library: Shared libraries and Timezone
ii m4 1.4.2-1 a macro processing language
--
%{
#include <stdio.h>
#include <stdlib.h>
static int yylex(void);
static void yyerror(const char *s);
%}
%token FOO BAR
%%
exp: expr {
return $1;
}
;
expr: expr BAR expr { $$ = $1 + $3; }
| FOO
;
%%
static int yylex(void)
{
static int count;
switch (count++) {
case 0:
yylval = 1;
return FOO;
case 1:
return BAR;
case 2:
yylval = 3;
return FOO;
case 3:
yylval = 5;
return FOO;
default:
return 0;
}
}
int main(void)
{
return yyparse();
}
static void yyerror(const char *s)
{
puts("syntax error");
exit(1);
}
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