or download this
C:\>perl -MMath::MPFR -MTest::More -e "cmp_ok(Math::MPFR->new(2), '!='
+, Math::MPFR->new(2), 'test for blow up'); done_testing();"
not ok 1 - test for blow up
...
Cleaning up the CONTEXT stack...
# Tests were run but no plan was declared and done_testing() was not s
+een.
# Looks like your test exited with 255 just after 1.