Test failures on 32bit arch

[rrrrrrmb]

Hello, we have the following bug report for stackprof gem in Debian.
test_raw fails as below in 32 bit arch

Finished in 0.379613s, 79.0278 runs/s, 237.0833 assertions/s.

  1) Failure:
StackProfTest#test_raw [/<<PKGBUILDDIR>>/test/test_stackprof.rb:153]:
Expected 498034323 to be > 859491493514.

30 runs, 90 assertions, 1 failures, 0 errors, 0 skips
rake aborted!

Can you take a look at this ?