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<?hh var_dump(0x00+2); var_dump(0x00 +2); var_dump(0x00 + 2); }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.4.32
<?hh var_dump(0x00+2); var_dump(0x00 +2); var_dump(0x00 + 2); }