Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!ncar!ico!rcd
From: rcd@ico.isc.com (Dick Dunn)
Newsgroups: comp.unix.sysv386
Subject: Re: alloca for V.4? (mutter, grumble...)
Summary: oh, if it were only so easy!
Message-ID: <1990Oct23.190425.5052@ico.isc.com>
Date: 23 Oct 90 19:04:25 GMT
References: <2064@sixhub.UUCP> <1457@gandalf.littlei.UUCP> <15990@bfmny0.BFM.COM>
Organization: Interactive Systems Corporation, Boulder, CO
Lines: 28

tneff@bfmny0.BFM.COM (Tom Neff) writes:
  pcg@cs.aber.ac.uk (Piercarlo Grandi) writes:
> >alloca() is in SVR4, but in a place that is as improbable as -lPW in
> >V.3.2; I seem to remember somebody saying it is in -lucb.

> I really recommend that people who are looking for things like alloca()
> take the time to run something like
> 
> 	nm -ehr /lib/*.a /usr/lib/*.a | fgrep extern > allsyms.txt

Tom's advice is good, but unfortunately in some parts of the universe, the
obsession with reorganizing, splitting out, rearranging, and generally
changing-for-the-sake-of-change outstrips a moderately clever person's
ability to figure out what's happened.  In the case of V.4, alloca() is in
/usr/ucblib/libucb.a (how many times have I posted that now?:-), so Tom's
little searchit won't find it.

And BTW, I don't claim to have found it by being more-than-moderately
clever.  I stepped in it after trying to decode the difference between
/bin/cc (which is really /usr/bin/cc) and /usr/ucb/cc (which turns out to
be a delightful 55-line shell script containing exactly one line of
command, unless you also count the shell selection line #!/sbin/sh, but
you probably shouldn't since it doesn't occur until line 8, and therefore
probably doesn't do anything anyway, but I digress, and also run short of
commas...:-)
-- 
Dick Dunn     rcd@ico.isc.com -or- ico!rcd       Boulder, CO   (303)449-2870
   ...Never offend with style when you can offend with substance.