Failed test: tests/output/ob_011.phpt

Hi While preparing a virtual machine for testfest tomorrow, I ran into a test which literally hangs my vm every time because no memory is available anymore (so ending in a kernel panic because no processes are available anymore to kill). This is the test: tests/output/ob_011.phpt I see this one is supposed to fail until something is fixed, but apparently it consumes so much memory that I think something else is going on. Does anyone else have the same problem? I have 512mb assigned to my vm, which I think should be enough to run the test suite. Cheers, Felix