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From: Per Sandberg <per.sandberg@bredband.net>
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Newsgroups: comp.lang.ada
Subject: Re: Memory leak in BLAS/LINPACK - GNAT on OS X
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NNTP-Posting-Date: Sat, 19 Apr 2008 02:56:30 EDT
Date: Sat, 19 Apr 2008 08:57:10 +0200
Xref: g2news1.google.com comp.lang.ada:20997
Date: 2008-04-19T08:57:10+02:00
List-Id: <comp.lang.ada>

Thought it i recognized this problem so i checked it out and found:
It is  corrected in the Latest GNATPro version (the problem is in the 
compiler).

/Per

tkrauss wrote:
> There have been a few messages on the GNAT-OSX mailing list about an
> apparent memory leak in the Ada.Numerics.Long_Real_Arrays
> implementation.   The setup is an OS X box (10.4) with the GNAT 4.3
> compiler from the macada.org site.  The Ada.Numerics.Long_Real_Arrays
> is using the Apple-supplied BLAS and LINPACK libraries under the
> hood.  The code snippet below (plagiarized from Jerry's post on the
> mailing list) leaks memory (as reported by top).  Note that the same
> code but with Long_Complex types does not appear to have this problem.
> 
> Has anyone seen this problem on other platforms?  Do other languages
> on OS X behave this way?  I'm not sure how to track down the guilty
> party here.  Is it Apple's BLAS or LINPACK libraries or something in
> the GNAT Long_Real_Arrays multiply method?
> 
> 
> with Ada.Numerics.Long_Real_Arrays;
> use Ada.Numerics.Long_Real_Arrays;
> 
> procedure tst_simple is
>   v        : Real_Vector(1 .. 100_000) := (others => 1.23);
>   res      : Real_Vector(1 .. 100_000);
> begin
>   for i in 1..1000 loop
>     res := 123.456 * v;
>   end loop;
> end tst_simple;
>