gilbert

@0xgib

113 Following

779 Followers

gilbert pfp

When transferring all SOL out of an account on Solana (aka "closing" the account), the account doesn't actually get removed until the end of the transaction. Done naively, this allows attackers to reuse or reinitialize the account, potentially draining funds from the protocol 🫢

1 reply

3 recasts

12 reactions

gilbert pfp

Solana's official "Token Program", released in 2020, serves as an "ERC-20"-like program for creating fungible and non-fungible tokens. Interestingly, a new "Token-2022 Program" was developed, stemming from an issue with Solana's programming model.

0 reply

1 recast

8 reactions

gilbert pfp

Solana programs do not have overflow/underflow checks on by default. You must enable them by setting `overflow-checks = true` in your Cargo.toml

1 reply

0 recast

1 reaction

gilbert pfp

Meant to post this in this channel:

0 reply

0 recast

2 reactions

gilbert pfp

Update: Solana does still not have slashing implemented

2 replies

0 recast

7 reactions

gilbert pfp

just got back to austin. why is it still hot

0 reply

0 recast

10 reactions

gilbert pfp

It's time to start casting again

0 reply

0 recast

2 reactions

gilbert pfp

Hey @v sorry for the ping but my friend's casts are not showing up in any channels. Did he get shadowbanned or something?

1 reply

0 recast

0 reaction

gilbert pfp

I can't seem to find this cast that was posted /founders recently. Bug? https://warpcast.com/harsh/0x190e3716

1 reply

0 recast

2 reactions

gilbert pfp

Solana uses a fixed size stack frame of 4KB. This means if a function call uses more than 4KB of parameters, local vars, etc. then the program (thankfully) crashes

1 reply

0 recast

2 reactions

gilbert pfp

One way to bridge assets (or send messages in general) to/from Solana is to use the Wormhole protocol. Wormhole has an off-chain network of "Guardians" that pass these messages across chains. However, there are exactly 19, and only 19... anyone know something about this? https://wormhole.com/blockchains/#guardians

1 reply

0 recast

0 reaction

gilbert pfp

Lido's stETH is a rebasing token. Rebasing tokens are problematic to integrate with for the majority of protocols, due to holder balances constantly shifting. Fortunately Lido recognizes this and offers wstETH, representing *shares* instead, which are stable across rebases, making it compatible with defi in general.

0 reply

0 recast

2 reactions

gilbert pfp

On Solana, you can have a single transaction that makes multiple top-level program calls. In contrast, an EVM tx only supports sending calldata to a single contract address.

2 replies

0 recast

2 reactions

gilbert pfp

Security question: If deploying a contract can take 100-1000x transactions, then how does upgrading a contract work for that same number of transactions? Will the contract still function? As its old version? Or do you upload to a buffer and switch to it in 1 tx instead?

1 reply

0 recast

0 reaction

gilbert pfp

Raise your hand and drop a link if your company survived the crypto bear market 👋

1 reply

0 recast

2 reactions

gilbert pfp

EVM smart contracts don't really have a max size, since an SSTORE opcode has an entire 256 bits of address space to write to (in theory, anyway) Solana accounts have a max size of 10 MiB, which must be incremented to via the limit of 10 KiB per instruction.

0 reply

0 recast

0 reaction

gilbert pfp

"Deploying a program on Solana requires hundreds, if not thousands of transactions, due to the max size limit of 1232 bytes for Solana transactions" 🧐🧐🧐 https://solana.com/docs/programs/deploying

3 replies

0 recast

1 reaction

gilbert pfp

In a Solana transaction, a program cannot arbitrarily read data from just any address. You MUST specify which accounts you wish to read from, upfront, BEFORE the program even begins to run 😦 https://warpcast.com/0xgib/0xa0a411ba

2 replies

0 recast

0 reaction

gilbert pfp

Correction: Rent doesn't really exist anymore as a mechanism in Solana. As of June 2022, all storage MUST deposit 2 years worth of "rent" to be accepted on-chain. "Deposit" means you get it back when you delete that same storage. https://warpcast.com/0xgib/0x5247264a

0 reply

0 recast

2 reactions

gilbert pfp

Solana storage fees are not one-and-done. You have to pay "rent" over time to maintain that data's persistence on-chain. If you don't pay, your data could get garbage collected 🗑️

2 replies

0 recast

1 reaction