Does not work on FW 6.51

[sleirsgoevy]

If I run this on PS4 FW 6.51, I get an error complaining that Struct cannot be found. If I rewrite the code which is using it (int64.js and read*/write* functions) to use typed arrays instead, it works but the bug does not get triggered. The PoC does work though, so the bug is definitely present.

[sleirsgoevy]

So I went ahead and reimplemented the exploit from scratch (not actually; the only thing that has been left from the original exploit is the JSCell header for fake typed array). https://github.com/sleirsgoevy/bad_hoist