Hi,

After compiling uclibc with gcc-3.4.6 (current hardened compiler) any
program linked with -lpthread just segfaulted.

shows up that gcc first omits the framepointer then tries to access it.
To work around it, gcc-3.4.6 need to add -fno-omit-framepointer to
libpthreads.old/*

attatched patch will help you to build a working hardened uclibc-0.9.30.

-nc