[Bug c++/53431] C++ preprocessor ignores #pragma GCC diagnostic ignored "-Wundef"

[rainarchitect at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53431

--- Comment #4 from George Galeev <rainarchitect at gmail dot com> ---
Guys, how to get a look at this bug? I'm tired of reading 100500 warnings from
third-party libraries.

GCC-4.6, GCC-4.7, GCC-4.8, C++11
Gentoo Linux x86-64