From: "rob pike" <rob@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] C compiler and junk mail
Date: Fri, 2 Mar 2001 14:55:34 -0500 [thread overview]
Message-ID: <20010302195541.A97DD199EB@mail.cse.psu.edu> (raw)
1) I sent a mild complaint earlier about how the 2nd edition C
compiler fails to remove // type comments from #define statements.
This caused me some grief when importing code into plan 9.
Is this an over sight in the implementation or leaving these comments
in place part of the language specifications?
Well, first, those are not ANSI C comments. They may be in C99.
But they were added to the Plan 9 compilers because some people
prefer them.
The real problem here is that the Plan 9 compiler remove comments
at a slightly different point in the processing than the ANSI standard
suggests, so comments on #include and #define lines can cause trouble.
If you really care, use 8c -p to invoke a strict ANSI preprocessor.
-rob
next reply other threads:[~2001-03-02 19:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-02 19:55 rob pike [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-03-05 23:17 Russ Cox
2001-03-02 20:41 dmr
2001-03-02 17:45 ed
2001-03-02 18:28 ` Scott Schwartz
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