address@hidden:/media/A-DATA UFD/c/bison$ bison zeit.y && echo "" && gcc -o zeit zeit.tab.c && echo "12.12.2009 12:14:12" |./zeit

Starting parse
Entering state 0
Reading a token: Next token is token $undefined ()
Reducing stack by rule 1 (line 18):
-> $$ = nterm input ()
Stack now 0
Entering state 3
Next token is token $undefined ()
syntax error
Error: popping nterm input ()
Stack now 0
Cleanup: discarding lookahead token $undefined ()
Stack now 0