glibc 2.3 not binary compatible with glibc-2.2.5

[Christoph Lameter]

I upgraded a system from 2.2.5 and lots of binaries broke amoung them

tar, devfsd and ls

strace, bash and lots of other tools were ok.

All binaries were build with glibc-2.2.5

When I straced tar and ls I saw the segfault occurring after the first two

rt_sigaction

invocation. Running tar with 2.2.5 shows that there are 4 calls to
rt_sigaction in sequence. So I guess there is some API breakage.