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From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: A solution to the multiple inclusion problem
Keywords: #include c
Message-ID: <11402@smoke.BRL.MIL>
Date: 24 Oct 89 20:12:42 GMT
References: <14240@well.UUCP> <1989Oct23.191634.6345@cs.rochester.edu> <1659@atanasoff.cs.iastate.edu>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 7

In article <1659@atanasoff.cs.iastate.edu> hascall@atanasoff.UUCP (John Hascall) writes:
-    Since the impending ANSI standard requires that including a file more
-    than once have exactly the same effect as including it once...why can't
-    a compiler just ignore #includes for files it has already #included???
-    (at least for the "standard" includes)

It can, but ONLY for the standard headers.