http://bugs.winehq.org/show_bug.cgi?id=16413
--- Comment #9 from Dmitry Timoshkov dmitry@codeweavers.com 2009-02-16 23:39:03 --- (In reply to comment #8)
It's good, this bug exist, cause I would have trouble putting it all together. Recently, my distro enabled by default the option that generates those warnings (in the compiler). It's -D_FORTIFY_SOURCE=2. So, glibc is the source of those warnings only in part and disabling them should not be hard. AFAIK, RedHat derivates enabled that option for quite longer (in compliler, too).
As pointed out in the comment #4 report the bug to your distro. It's not up to a distribution to force warnings for the source, it's the developer's decision, not anybody else.