On 2 Aug 2010, at 15:52, u...@jona-mission.de wrote:

Das läuft auch ganz prima durch, aber beim Ende (eof) gibt es einen
seg-fault.
...
%%
...

ipadr: VALID_IP { sprintf($$,"valid-ip=%s",$1); };

You haven't allocated $$ here. In the other cases, you just hand over an allocated pointer, so that works.

  Hans



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