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Mail Archives: djgpp/1999/09/29/22:21:14

From: Nate Eldredge <neldredge AT hmc DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: HELP ! (returning structures)
Date: Wed, 29 Sep 1999 16:44:40 -0700
Organization: Harvey Mudd College
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Damian Yerrick wrote:

> Davin, your solution is IMHO not the best. Passing structures
> on the stack is inefficient. The best way to return a structure is
> to fill in a blank structure pointed to in the arguments.

Sometimes.  Actually, returning structures is implemented like this
underneath (the function is given a pointer which tells it where to
place the returned struct).  If GCC were smarter it could optimize the
temporary local struct out of existence (and perhaps it does for
sufficiently simple cases, I haven't checked).

[...] 
> Davin, I challenge you to find one C library function that returns
> a struct on the stack. :-)

Can an outsider play?

`div'

Unix has some in networking functions, like `inet_makeaddr'.
-- 

Nate Eldredge
neldredge AT hmc DOT edu

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