After build a new version of procps using the "-Os" flag for gcc, all its (procps) software (ps, top, etc) were failing due to a segmentation fault. I couldn't find a report about that at Bugzilla, but I did find one at "http://www.netdomination.org/~stkn/index.php?/archives/24-Anatomy-of-a-segfault....html". Although the author of that report was using ulibc (and I glibc), it applied perfectly to my case. After I removed the "-ffast-math" from the procps compile command, everything worked fine again.
-- Summary: SEGSEGV at set_fast_math () at ../../gcc/config/i386/crtfastmath.c:97 when using the - Os flag Product: gcc Version: 4.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: magsilva at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28621