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Re: Reply to Mr Verdoolaege about wide chars

From: Alexander Viro
Subject: Re: Reply to Mr Verdoolaege about wide chars
Date: Fri, 5 Oct 2001 07:14:00 -0400 (EDT)

On Fri, 5 Oct 2001, Rod Chamberlin wrote:

> On Fri, 28 Sep 2001, Thomas Dickey wrote:
> > On Fri, Sep 28, 2001 at 01:18:24PM +0100, Rod Chamberlin wrote:
> > > I think the thing you need to beware of if you are returning structures is
> > > thread safety, since the structure is usually returned in a standard
> > > common block of memory rather than in a register/on the stack.
> > 
> > is that gcc only, or generally true of C compilers?

It's not gcc.  It's an ancient pcc bug that had crapped calling conventions
on old Unices.  Fixed more than a decade ago...

> I'm not sure actually; it's something I read a while back about the use of
> structure return-values.  I tend to try to avoid them, and just pass them
> by reference, but I guess that isn't feasible here.

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