Using the latest (still -*) binutils 2.17.50 gdb warns about the new GNU hash style: BFD: /lib64/ld-linux-x86-64.so.2: don't know how to handle OS specific section `.gnu.hash' [0x6ffffff6] warning: Unable to grok dynamic linker /lib64/ld-linux-x86-64.so.2 as an object file warning: Unable to find dynamic linker breakpoint function. Fedora has a small backported patch for gdb 6.5 that adds support for them (can be found e.g. in ftp://download.fedora.redhat.com/pub/fedora/linux/core/development/source/SRPMS/gdb-6.5-3.fc6.src.rpm , I also attached it. Assuming you want to ~arch the new binutils before a new gdb is release you might be interested.
Created attachment 94929 [details, diff] gdb 6.5 GNU hash style support
added to 6.5-r2