From: Ian Lance Taylor <iant@google.com>
To: zou wonder <wonder.zou@gmail.com>
Cc: gcc-help@gcc.gnu.org
Subject: Re: compile with gcc option -O0 or -O
Date: Fri, 16 Sep 2011 05:41:00 -0000 [thread overview]
Message-ID: <mcrobyl6o4f.fsf@coign.corp.google.com> (raw)
In-Reply-To: <CAOXjUBxzdU2z8sEwGyczjovxigcwUkWNf28szuaQVEDKa9S=Sg@mail.gmail.com> (zou wonder's message of "Fri, 16 Sep 2011 13:04:28 +0800")
zou wonder <wonder.zou@gmail.com> writes:
> but one weird problem is that the following codes compiled with option -O0
You need to show us a small complete self-contained example.
Normally a program which works at -O0 and fails at -O1 has an
uninitialized variable somewhere.
Ian
next prev parent reply other threads:[~2011-09-16 5:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-16 5:04 zou wonder
2011-09-16 5:41 ` Ian Lance Taylor [this message]
2011-09-16 7:10 ` David Brown
2011-09-16 7:54 ` Miles Bader
2011-09-16 9:21 ` David Brown
2011-09-16 10:06 ` Miles Bader
2011-09-16 10:35 ` David Brown
2011-09-16 8:27 ` Jeffrey Walton
[not found] ` <CAOXjUBzK0snvjNcpi8D3mK5dmXwzH62XXETyjv+4f6S+LDmXyQ@mail.gmail.com>
[not found] ` <CAOXjUBwW2ghmfsF1OA5DY7hZOz-43r22biSG60VyWaviFau_-Q@mail.gmail.com>
[not found] ` <mcrfwjx6lrk.fsf@coign.corp.google.com>
2011-09-16 9:12 ` zou wonder
2011-09-16 9:32 ` David Brown
2011-09-16 9:47 ` Jonathan Wakely
2011-09-19 9:57 ` zou wonder
2011-09-19 10:32 ` David Brown
2011-09-21 2:18 ` zou wonder
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