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To: Georg.Rehm@CL-KI.Uni-Osnabrueck.DE Subject: Re: "flex scanner push-back overflow" In-reply-to: Your message of Thu, 20 Aug 1998 09:47:54 PDT. Date: Thu, 20 Aug 1998 07:05:35 PDT From: Vern Paxson <vern> > myflex/flex -8 sentag.tmp.l > flex scanner push-back overflow Flex itself uses a flex scanner. That scanner is running out of buffer space when it tries to unput() the humongous macro you've defined. When you remove the '/'s, you make it small enough so that it fits in the buffer; removing spaces would do the same thing. The fix is to either rethink how come you're using such a big macro and perhaps there's another/better way to do it; or to rebuild flex's own scan.c with a larger value for #define YY_BUF_SIZE 16384 - Vern