Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!samsung!noose.ecn.purdue.edu!mentor.cc.purdue.edu!mace.cc.purdue.edu!abe
From: abe@mace.cc.purdue.edu (Vic Abell)
Newsgroups: comp.unix.aix
Subject: Re: Help on Compiling Emacs on AIX (RS6000)
Message-ID: <5732@mace.cc.purdue.edu>
Date: 9 Oct 90 21:38:21 GMT
References: <9010092106.AA22112@nth.com>
Reply-To: abe@mace.cc.purdue.edu (Vic Abell)
Organization: Purdue University
Lines: 18

In article <9010092106.AA22112@nth.com> lowe@nthropy.UUCP (Andy Lowe) writes:
>
>yzhao@hermes.cs.uh.edu writes:
>
>the posting:
>	 use of alloca and optimization under XL C on AIX 3.1
>by abe@mace.cc.purdue.edu (Vic Abell)
>in this newsgroups seems to report a similar problem.

This may not be a similar problem.  The official solution to the absence
of alloca() is to use

	#pragma	alloca

instead.  (See the BSD porting guide in /usr/lpp/bsdport.)  My problem
was that, while the #pragma worked with no CC optimization or with debug
(-g) mode, I couldn't get it to work when I used optimization (-O).  I
don't yet have an answer to that paradox.