Gentoo's Bugzilla –
Attachment 361668 Details for
Bug 474636app-emulation/open-vm-tools-kmod-2013.04.16.1098359 - .../work/open-vm-tools-2013.04.16-1098359/modules/linux/vmblock/linux/inode.c:138:32: error: incompatible types when assigning to type ‘kgid_t’ from type ‘int’