The directory poisoning patch is present, but not enabled in binutils and gcc (4.5.0).
http://git.pokylinux.org/cgit.cgi/poky/commit/?id=4a193307092267547386a6c0801c0ccd65e88c39 http://git.pokylinux.org/cgit.cgi/poky/commit/?id=23f522e7a53821a8fb036e1aebddc7379d6f584e