Path: utzoo!attcan!uunet!aplcen!uakari.primate.wisc.edu!uflorida!novavax!twwells!bill
From: bill@twwells.com (T. William Wells)
Newsgroups: comp.lang.c
Subject: Re: LEX rule, anyone???
Message-ID: <1989Dec6.144905.1520@twwells.com>
Date: 6 Dec 89 14:49:05 GMT
References: <601@vice2utc.chalmers.se> <21108@mimsy.umd.edu>
Organization: None, Ft. Lauderdale, FL
Lines: 15

In article <21108@mimsy.umd.edu> cml@tove.umd.edu (Christopher Lott) writes:
:    /* this is a regular expression to match a c comment       */
:    /* written by cml 890922   (probably not minimal)  */
: %%
: "/*"([^*]|[*]*[^*/])*[*]+"/"  {printf("saw a c comment.\n");}
: .                             {putchar(*yytext);}

This breaks if the comment is longer than lex's internal buffer.
Moreoever, at least some lex's do *not* check for buffer overflow.

Boom.

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