On Sat, 2012-09-29 at 10:54 +0800, Zhenzhong Duan wrote:

On 2012-09-28 22:54, Paul Bolle wrote:

quoted

Not even before applying your patch? Anyhow, after applying your patch
the warnings gone here too.

I tested both cases, no warning, also didn't see -Wmaybe-uninitialized 
when make.
My env is el5. gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)
Maybe your gcc built in/implicit spec use that option?

I simply use what (was and) is shipped by Fedora 17:
    $ sudo grep -w gcc /var/log/yum.log 
    Sep 12 11:45:54 Installed: gcc-4.7.0-5.fc17.x86_64
    Sep 27 13:54:24 Updated: gcc-4.7.2-2.fc17.x86_64

So I did my patch with a version of GCC's release 4.7.0, and tested your
patch with a version of GCC's 4.7.2 release.

I don't think I tweaked any settings. Unless there are strong reasons to
do otherwise, I try to use the tools shipped by Fedora in their default
settings. (I'm not even sure there's a way to set one's GCC settings
locally.)


Paul Bolle

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