Message-ID: <3EABADC6.1E45F2C1@yahoo.com>
Date: Sun, 27 Apr 2003 06:15:34 -0400
From: CBFalconer <cbfalconer AT yahoo DOT com>
Organization: Ched Research
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To: djgpp-workers AT delorie DOT com
Subject: Re: Bug 00314 -- div() still broken
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Reply-To: djgpp-workers AT delorie DOT com

Richard Dawe wrote:
> Ben Peddell wrote:
> 
> [snip]
> > GCC 3.2.1 has -fpcc-struct-return by default in DJGPP, whilst
> > GCC 3.2.2 has -freg-struct-return by default in DJGPP.
> > GCC 3.2.2 may need to be configured to make -fpcc-struct-return
> > the default, to maintain compatibility with the DJGPP 2.03
> > libraries. Or, the libraries may need to be re-compiled for GCC
> > 3.2.2, and marked as such.
> >
> > These options are in `info gcc "Invoking GCC" "Code Gen Options"'
> 
... snip ...
> 
> I think we should add -fpcc-struct-return to the default compiler
> options for DJGPP libc's sources. Some people are probably still
> using gcc 2.95.x. I can't really blame them, given gcc 3.x's
> guess-which-ABI-we're-using-now problems. We should remain
> binarily compatible across several gcc versions
> 
> 2.04 alpha 1 was compiled with gcc 3.2.2, so I'll mention that it
> probably only works with 3.2.2 in the announcement.

WARNING - the nmalloc/malldbg interface depends on returning a
struct from a function, as does the mallinfo/user interface. 
However they are too large to be returned in a register, which may
be a good thing.

-- 
Chuck F (cbfalconer AT yahoo DOT com) (cbfalconer AT worldnet DOT att DOT net)
   Available for consulting/temporary embedded and systems.
   <http://cbfalconer.home.att.net>  USE worldnet address!