Patch for undefined behaviour in gcc

[Horst von Brand]

Neil Booth <NeilB@earthling.net> said:

[...]

> Development versions of GCC suppress all warnings in system headers,
> for this very reason.

Thus encouraging glibc headers that can't be used at all with other
compilers. I understand keeping quiet about propietary header's brokeness,
BTW.
-- 
Horst von Brand                             vonbrand@sleipnir.valparaiso.cl
Casilla 9G, Vin~a del Mar, Chile                               +56 32 672616