Gentoo's Bugzilla –
Attachment 317964 Details for
Bug 426220media-libs/libv4l-0.8.5 with sys-devel/gcc-4.7 - v4l2convert.c: In function 'open64': /usr/include/bits/fcntl2.h:42:1: error: inlining failed in call to always_inline 'open': function not inlinable