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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: GNAT/GCC and -fstack-check
Date: Wed, 27 Oct 2010 00:35:46 -0700 (PDT)
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Date: 2010-10-27T00:35:46-07:00
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Yannick Duch=EAne wrote on comp.lang.ada:
> Ludovic Brenta a =E9crit:
>> By the way, the GNAT documentation about stack analysis and handling
>>> seems a bit outdated. It talks about an =93-fstack-usage=94 option, whi=
ch
>>> does not =A0seems to be recognized (gnatmake complains =93invalid switc=
h:
>>> -fstack-usage=94). Some web-talks about this option strictly concerning
>>> GCC =A0says it is not neither supported by GCC anymore.
>
>> I suggest you report this as a documentation bug.
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D46189
> (with CC to you)

[The bug was rejected as the option -fstack-usage is actually new in
GNAT Pro and GCC 4.6, not old]

I apologize for making this recommendation so quickly.  I didn't
realize you were comparing apples (the latest GNAT Pro documentation
from the latest nightly build at AdaCore's web site) and oranges (the
latest stable release of GCC).  Today's GNAT Pro is roughly equivalent
to the trunk of GCC (the future GCC 4.6), but since Stage 1 ends
today, GNAT Pro is going to start moving ahead from GCC again.

The documentation for GCC is here:
http://gcc.gnu.org/onlinedocs/

This includes stable releases (the latest is 4.5.1) and, at the bottom
of the page, nightly builds (the future 4.6.0).  I see the latter
includes information on -fstack-usage.

--
Ludovic Brenta.