Discriminator should be `u32`

[steveluscher]

Looking through some transactions on mainnet, I think these discriminators are supposed to be u32.

https://github.com/solana-program/loader-v4/blob/main/program/idl.json#L36

[steveluscher]

Uh, actually nevermind. This program won't suffer from this because there is no legacy version.

[buffalojoec]

There is a builtin version.
https://github.com/anza-xyz/agave/tree/master/programs/loader-v4