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Re: Wdisabled-optimizations strange warning

From: "Paulo J. Matos" <paulo at matos-sorge dot com>
To: gcc-help at gcc dot gnu dot org
Date: Thu, 01 Sep 2011 14:22:16 +0100
Subject: Re: Wdisabled-optimizations strange warning
References: <j3kvsk$ng1$1@dough.gmane.org> <mcrippdr6b0.fsf@coign.corp.google.com>

Thanks Ian!

Reported as http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50264

On 31/08/11 15:42, Ian Lance Taylor wrote:

"Paulo J. Matos"<paulo@matos-sorge.com> writes:

With GCC 4.3.4:
$ echo 'char id[] = "x";'>  id_test.c
$ gcc-4.3.4 -Wdisabled-optimization -c id_test.c
cc1: warning: -funit-at-a-time is required for inlining of functions
that are only called once

What's the reason for this warning? GCC46 doesn't emit it so I am
guessing this is a bug. Anyone agree?

Certainly looks like a bug.

I'm guessing that in gcc 4.3 -Wdisabled-optimization can only be used
with -O.

Ian

--
PMatos

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