Newsgroups: comp.unix.aix
Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!hybrid!scifi!watson!arnor!prener!prener
From: prener@watson.ibm.com (Dan Prener)
Subject: Re: Bug/Feature of Fortran under 3003?
Message-ID: <1991Apr19.001820.13721@watson.ibm.com>
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Reply-To: prener@prener.watson.ibm.com (Dan Prener)
Organization: IBM T.J. Watson Research Center
References:  <1991Apr11.150613.24468@news.nd.edu>
Date: Fri, 19 Apr 1991 00:18:20 GMT

In article <1991Apr11.150613.24468@news.nd.edu>, mahesh@caradhras.cc.nd.edu (Mahesh "BigMan" Subramanya) writes:
|> 
|> 	We just upgraded to 3003 recently, and came across this
|> rather neat bug/feature of the FORTRAN compiler, where when a program 
|> is compiled with the optimizer turned on, the compiler merrily
|> "skips" over entire sections of code.  It looks like DO loops are
|> the most likely candidates for being skipped over.  I've not been able
|> to track the specifics down yet (very large source).
|> 
|> Has anyone seen this, and do you know what it is
|> 
|> Oh, B.T.W., compiling without the optimizer works fine...
|> 
|> Frustrated and Frantic...
|> 

Have you reported this to IBM?
-- 
                                   Dan Prener (prener @ watson.ibm.com)