ref-fvm

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I get ` TokenAmount(0.00000000000000-998) ` should be `TokenAmount(-0.00000000000000998)`

Kubuxu

Switch to maintained WASM instrumentation library

1

Switch from parity-wasm (now unmaintained https://github.com/paritytech/parity-wasm/pull/334) to wasmparser (https://crates.io/crates/wasmparser) and wasm-encoder (https://crates.io/crates/wasm-encoder). This means re-implementing our instrumentation logic, unfortunately. But I'd rather not maintain parity-wasm. See https://github.com/filecoin-project/ref-fvm/issues/668, https://github.com/filecoin-project/ref-fvm/issues/602.

Stebalien

fix:set sys code cid

3

hunjixin

self_destruct should auto-create beneficiary

2

Currently, if the beneficiary doesn't exist and is, e.g., a key address, we _don't_ automatically create it. This differs from `send` where we do.

Stebalien

Consider removing SysErrInsufficientFunds

1

Instead, the system could just use `ErrInsufficientFunds` (the user error). Why keep it? 1. The system doesn't _currently_ generate any non-sys exit codes. 2. This makes it easy to distinguish...

Stebalien

Caller-side restrictions on method capabilities

1

An idea via @jsuresh (working with me on token API design). Re-entrancy bugs are rather common in existing blockchain systems (see The DAO hack and many others), and Filecoin [isn't...

anorth

Currently, we charge gas, but we don't charge for the logic that charges for gas. We should do that. Basically, this means adding a small static charge per gas instrumentation...

Stebalien

Wasm module compression

7

Currently, our actors are pretty large (over 2MiB in some cases). Unfortunately, we _really_ want to keep a 2MiB upper limit on IPLD objects. If we don't fix this _now_,...

Stebalien

An event is effectively the inverse of a method: - Method: The caller calls a method defined by the callee. - Event: The sender sends an event defined by the...

Stebalien

Investigation: Using Wasm Type Interfaces

1

- https://hacks.mozilla.org/2019/08/webassembly-interface-types/ - https://github.com/WebAssembly/interface-types Basically, this is an attempt to make a "better" FFI for cross-language interop. Importantly, it tries really hard to avoid serializing/converting types. I'm wondering if there's...

Stebalien