Since the upgrade to glibc 2.17, we are seeing testsuite failures on 32bit systems, details are on http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711550 but basically this is it:
FAIL: (ngram_score(model, "<UNK>", ((void *)0))) == (-75346)
Interestingly, the value actually returned here is -75345. That's with
libc 2.17. With libc 2.13 -75346 is returned. I guess the discrepancy
might be due to libm changes between 2.13 and 2.17 which changes
floating point operations just a little bit.