With 5.8 perls, the pragma does not propagate into C<eval STRING>.
This is due to a shortcoming in the way perl handles the hints hash, which is addressed in perl 5.10.
+Indirect constructs that appear in code C<eval>'d during the global destruction phase of a spawned thread or pseudo-fork (the processes used internally for the C<fork> emulation on Windows) are not reported.
+
The search for indirect method calls happens before constant folding.
Hence C<my $x = new Class if 0> will be caught.