freebsd-dev/contrib/byacc/test/err_syntax22.y

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2014-04-22 22:11:22 +00:00
%{
int yylex(void);
static void yyerror(const char *);
%}
%union {
int ival;
double dval;
}
%token NUMBER
%type <dval> expr
%%
expr : '(' recur ')'
{ foo( $$ = $2 ); }
;
recur : NUMBER
;
%%
#include <stdio.h>
int
main(void)
{
printf("yyparse() = %d\n", yyparse());
return 0;
}
int
yylex(void)
{
return -1;
}
static void
yyerror(const char* s)
{
printf("%s\n", s);
}