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From: grp@Unify.com (Greg Pasquariello)
Newsgroups: comp.lang.c++
Subject: Re: bug with making C++ functions have C linkage ?
Message-ID: <1991Apr22.081254@Unify.com>
Date: 22 Apr 91 15:12:54 GMT
References: <1991Apr16.122905.23613@cs.nott.ac.uk> <675@taumet.com>
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Reply-To: grp@Unify.com (Greg Pasquariello)
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In article <675@taumet.com>, steve@taumet.com (Stephen Clamage) writes:
> 
> Almost all current C++ compilers require that main() be compiled by
> the C++ compiler, even if other modules are compiled with a compatbile
> C compiler.  Your compiler manual should tell you this.
> 
> In general, C++ programs will require initialization of static objects
> via their constructors at runtime; cout is such an object.  The C++
> compiler arranges for the constructors (and destructors) to be called
> via special code emitted in the module in which main() appears.  This
> ensures the special code is emitted and called exactly once.

Only if some objects need initialization, and cannot provide it themselves!
Iostreams with 2.0 provide an initializer object, called Iostream_init, so
there is no reason you cannot use it unless you don't have the iostream
library or a similar method of initializing your objects.

It's true, I read it in the manual! :-)

> 
> In your example, main() was not compiled by the C++ compiler, cout
> was not initialized, and the program failed when it tried to use
> member functions of cout.
> -- 
> 
> Steve Clamage, TauMetric Corp, steve@taumet.com

--

---
Greg Pasquariello	grp@unify.com
Unify Corporation 	Be good and never poison people