NearTree build failed only on IA32

Hi. I'm now building NearTree package. https://bugzilla.redhat.com/show_bug.cgi?id=545047 As I've commented at #23, %check (This means "make tests") failed only on i686 (for EL6, f12 and f13). I can build NearTree on x86_64, ppc64, and ppc (for f12) with no error. All of EL6, f12, and f13 use gcc-4.4.4. f12 uses glibc-2.11.2. f13 uses glibc-2.12.1. EL6 uses glibc-2.12. I suppose there is something wrong with gcc or glibc. Does anyone know what happens? Takanori