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The PDA generation code itself is already hashing together all of the seeds, so that adds an additional hash step, which is compute-intensive when executed on-chain. … You can read more about PDA generation at https://solana.com/developers/courses/native-onchain-development/program-derived-addresses#3-create-program-address …

To answer your questions.... You'll need to just put some amount that you want to allocate at the start. Using std::mem::size_of will be incorrect, since it'll give you the stack space for a Vec, whi …

There's a specialized function for converting PDAs into an account meta usable for CPI: to_meta_c_signer https://github.com/cavemanloverboy/solana-nostd-entrypoint/blob/59856f0fd551845080482d64235914a …

You can read up on PDAs at https://solana.com/docs/core/pda and ownership at https://solana.com/docs/core/accounts#system-program …

Your program is being called from token-2022, and then your program is trying to CPI back into token-2022, which isn't possible. Re-entrancy is not allowed on Solana. You'll need to update your soluti …

For example, if program A calls to program B, program A can sign with a PDA and also provide the seeds used. … Program B can check that the PDA signed and that it was derived using a certain program id. If everything checks out, then program B can be sure that program A signed somewhere. …

It seems like there might be something missing in what you've provided. The error says that getrandom cannot be used in Solana programs, but the program you've provided doesn't seem to use any rand de …

If you're writing a custom token program, why not just store the correct balance on the ATA instead of the other PDA you've designed? The ATA is just a PDA too! …

If IsOnCurve is false, it means the address is a program-derived address. If an exchange has control of that address in their program, they can update their program to do anything with it, including r …

There may be better solutions through different RPC providers, but using the default Solana RPC, there's no way to create a "greater than" or "less than" filter, just exact memory comparison. So your …

Since you're passing in the seeds to invoke_signed, the runtime will check to make sure that one of the accounts can be promoted to a signer using the provided seeds. The runtime will perform create_p …

Be sure to upgrade all of your tools to the same consistent values, preferably 1.18 at the time of this writing, Solana crates and CLI. You can upgrade the CLI with: solana-install init 1.18.7 And in …

An option is to add #[inline(never)] to any functions that InitiateWheel` might call into. For example, the spl-stake-pool program was having issues in its main processor function because the compiler …

just need a small piece of metadata, you might be able to use the token-metadata extension in token-2022: https://spl.solana.com/token-2022/extensions#metadata If you give metadata update authority to a PDA …

There's a couple of questions here, and I think it'll help a lot if we separate them. To start, web and hardware wallets typically require manual confirmation for all transactions that the user signs …