b1048ff682
Currently, the position hint of an entry in the persistent auto dictionary is fixed to 1. As a consequence, with a 50% chance, the entry is applied right after the first byte of the input. As the position 1 does not appear to have any particular significance, this is likely a bug that may have been caused by confusing the constructor parameter with a success count. This commit resolves the issue by preserving any existing position hint or disabling the hint if the original entry didn't have one. Reviewed By: morehouse Differential Revision: https://reviews.llvm.org/D101686
See http://llvm.org/docs/LibFuzzer.html