linkum
{ beginloc = linkum(beginloc, $3); $$ = 0; }
{ endloc = linkum(endloc, $3); $$ = 0; }
| pa_stats opt_pst pa_stat { $$ = linkum($1, $3); }
| patlist comma pattern { $$ = linkum($1, $3); }
pattern comma pattern { $$ = linkum($1, $3); }
| plist comma pattern { $$ = linkum($1, $3); }
| pplist comma ppattern { $$ = linkum($1, $3); }
| stmtlist stmt { $$ = linkum($1, $2); }
arglist = $$ = linkum($1,celltonode($3,CVAR)); }
extern Node *linkum(Node *, Node *);