Weight limit of a cross contract call is too big (#3243)
When doing a cross contract call you can supply an optional Weight limit for that call. If one doesn't specify the limit (setting it to 0) the sub call will have all the remaining gas available. If one does specify the limit we subtract that amount eagerly from the Weight meter and fail fast if not enough `Weight` is available. This is quite annoying because setting a fixed limit will set the `gas_required` in the gas estimation according to the specified limit. Even if in that dry-run the actual call didn't consume that whole amount. It effectively discards the more precise measurement it should have from the dry-run. This PR changes the behaviour so that the supplied limit is an actual limit: We do the cross contract call even if the limit is higher than the remaining `Weight`. We then fail and roll back in the cub call in case there is not enough weight. This makes the weight estimation in the dry-run no longer dependent on the weight limit supplied when doing a cross contract call. --------- Co-authored-by: PG Herveou <pgherveou@gmail.com>
NOTE: We have recently made significant changes to our repository structure. In order to streamline our development process and foster better contributions, we have merged three separate repositories Cumulus, Substrate and Polkadot into this repository. Read more about the changes here.
Polkadot SDK
The Polkadot SDK repository provides all the resources needed to start building on the Polkadot network, a multi-chain blockchain platform that enables different blockchains to interoperate and share information in a secure and scalable way. The Polkadot SDK comprises three main pieces of software:
Polkadot
Implementation of a node for the https://polkadot.network in Rust, using the Substrate framework. This directory
currently contains runtimes for the Polkadot, Kusama, Westend, and Rococo networks. In the future, these will be
relocated to the runtimes repository.
Substrate
Substrate is the primary blockchain SDK used by developers to create the parachains that make up the Polkadot network. Additionally, it allows for the development of self-sovereign blockchains that operate completely independently of Polkadot.
Cumulus
Cumulus is a set of tools for writing Substrate-based Polkadot parachains.
Releases
Note
Our release process is still Work-In-Progress and may not yet reflect the aspired outline here.
The Polkadot-SDK has two release channels: stable and nightly. Production software is advised to only use stable.
nightly is meant for tinkerers to try out the latest features. The detailed release process is described in
RELEASE.md.
Stable
stable releases have a support duration of three months. In this period, the release will not have any breaking
changes. It will receive bug fixes, security fixes, performance fixes and new non-breaking features on a two week
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Nightly
nightly releases are released every night from the master branch, potentially with breaking changes. They have
pre-release version numbers in the format major.0.0-nightlyYYMMDD.
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Below are the primary upstream dependencies utilized in this project:
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- For monitoring upcoming changes and current proposals related to the technical implementation of the Polkadot network,
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