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To: Barbara Denny <denny@3com.com> Subject: Re: freebsd flex bug? In-reply-to: Your message of Fri, 30 Jan 1998 12:00:43 PST. Date: Fri, 30 Jan 1998 12:42:32 PST From: Vern Paxson <vern> > lex.yy.c:1996: parse error before `=' This is the key, identifying this error. (It may help to pinpoint it by using flex -L, so it doesn't generate #line directives in its output.) I will bet you heavy money that you have a start condition name that is also a variable name, or something like that; flex spits out #define's for each start condition name, mapping them to a number, so you can wind up with: %x foo %% ... %% void bar() { int foo = 3; } and the penultimate will turn into "int 1 = 3" after C preprocessing, since flex will put "#define foo 1" in the generated scanner. Vern