mixing prototyping and non-prototyping

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Article #1149

#1149

From: David Spuler
Date: Thu, 13 Aug 1992 23:42

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What are the rules regarding mixing old-style and new-style functions in C
programs?  Specifically, what mixtures must a compiler support,and which can
be legally allowed to bomb?

Can a prototyped function be legally called without a prototype in scope?  
My understanding was that this sort of mixing was allowed except for varargs
functions, or prototyped functions with char/float/short parameters, but I
was recently told I was wrong.  Could someone clear it up for me.

Can a non-prototyped function be called with a prototype in scope?
I assume not.

Thanks,
David Spuler
--
David Spuler, James Cook University of North Queensland, Australia
Author of "Comprehensive C", Prentice-Hall, 1992, pp416, ISBN  0-13-156514-1
INTRO TOPICS: types, operators, structures, strings, fns, ptrs, files etc etc
ADVANCED TOPICS: efficiency, debugging, style, portability, large programs

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From: spuler@coral.cs.jcu.edu.au (David Spuler)
Subject: mixing prototyping and non-prototyping
Message-ID: <spuler.713749345@coral.cs.jcu.edu.au>
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Organization: James Cook University
Date: 13 Aug 92 23:42:25 GMT
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