From: dave@horsfall.org (Dave Horsfall)
Subject: [TUHS] why the leading under score added to function names?
Date: Tue, 21 Feb 2012 10:21:41 +1100 (EST) [thread overview]
Message-ID: <alpine.BSF.2.00.1202211012090.62608@aneurin.horsfall.org> (raw)
In-Reply-To: <201202202052.q1KKqagi002055@freefriends.org>
On Mon, 20 Feb 2012, arnold at skeeve.com wrote:
[...]
> I'm pretty sure this dates back to PDP-11 days. I'm wondering "why?".
> Why did the C compiler prepend an underscore to function names?
Sure was the PDP-11 :-) I vaguely recall that it was to make sure that
user functions did not conflict with predefined assembler functions, as
that would be a pain to diagnose (much like having swap overlap root).
-- Dave
next prev parent reply other threads:[~2012-02-20 23:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-20 20:52 arnold
2012-02-20 23:21 ` Dave Horsfall [this message]
2012-02-21 0:34 ` Brantley Coile
2012-02-21 2:50 ` Warner Losh
2012-02-21 3:33 ` John Cowan
2012-02-21 3:41 ` Steve Nickolas
2012-02-21 18:18 ` ron
2012-02-22 19:17 arnold
2012-02-22 21:22 ` Dave Horsfall
2012-02-22 22:47 ` A. P. Garcia
2012-02-23 4:30 ` Greg 'groggy' Lehey
2012-02-25 18:45 ` Random832
2012-02-25 19:24 ` Steve Nickolas
2012-02-25 20:39 ` John Cowan
2012-02-25 22:15 ` Random832
2012-02-26 13:28 ` Ronald Natalie
2012-02-27 1:30 ` random832
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