From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Assembly returns...
Date:	Sat, 16 May 1998 09:39:03 -0400
Organization:	Two pounds of chaos and a pinch of salt.
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To:	djgpp AT delorie DOT com
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Paul Derbyshire wrote:
> 
> I suppose objects bigger than 32 bits are implicitly passed by reference using
> a pointer in eax, and the temporary is deleted only after receipt of the value
> in the caller?

I think that's correct.  However, if memory serves, such structs are not
returned by reference but by value; a separate copy is placed on the
stack and its address is returned in eax.  If this is correct, then your
huge class might cause a stack overflow if you tried to return it by
value.  The best way to find out is probably to compile such code with
the -S flag and examine the resulting assembly.

-- 
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|      John M. Aldrich       |"Men rarely (if ever) manage to dream |
|       aka Fighteer I       |up a god superior to themselves. Most |
|   mailto:fighteer AT cs DOT com   |gods have the manners and morals of a |
| http://www.cs.com/fighteer |spoiled child."    - Lazarus Long     |
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