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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: GNAT - return by anonymous access
Date: Sat, 17 Dec 2011 19:51:10 +0000
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Date: 2011-12-17T19:51:10+00:00
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Simon Belmont <sbelmont700@gmail.com> writes:

> This ostensibly simple program prints strange results, and i'm rapidly
> losing faith in the GNAT compiler (GNAT GPL 20110428).  If anyone with
> an alternative compiler can confirm or deny this output as spurious, I
> would be much obliged.  In short, when the declaration of 'bar' is
> commented out, the program behaves as i would expect (output is '42'),
> but when bar is present, the output is much different (output is
> '4409264').  Or, if my line of reasoning is mixed up and this is
> actually the appropriate behavior, I would be grateful for any
> explanation.

This surely can't be correct behaviour.

Here, on Mac OS X (64-bit compilers), GNAT GPL 2011 prints 1 (0 if I
make Test_Type non-limited).

GCC 4.6.0 behaves as you expect.