v0.3.1 Göttingen

Added

• Write environment configuration into Substrate metadata. xermicus
• Tornado cash as an exemplary integration test for Substrate chain extensions. xermicus
• is_contract runtime API is available as a builtin for Substrate. xermicus
• The wasm-opt optimizer now optimizes the Wasm bytecode on the Substrate target. xermicus
• Call flags are now available for Substrate. xermicus
• Read compiler configurations from toml file. salaheldinsoliman
• Accounts declared with @payer(my_account) can be accessed with the
  syntax tx.accounts.my_account. LucasSte
• delegatecall() builtin has been added for Substrate. xermicus
• get_contents_of_file_no for Solang parser. BenTheKush
• set_code_hash() builtin has been aded for Substrate. xermicus

Fixed

• Diagnostics do not include large numbers anymore. seanyoung
• Correctly parse and resolve require(i < 2**255). seanyoung
• Virtual function are available for call. xermicus
• Allow .wrap() and .unwrap() user defined type methods in constants. xermicus
• @inheritdoc now works with bases of bases. seanyoung
• Allow destructures to assign to storage variables. seanyoung
• Do not allow push and pop in fixed length arrays. LucasSte
• Improve unused variable elimination to remove unused arrays. LucasSte
• Salt argument should be of type bytes32. seanyoung
• Allow return vallues to be ignored in try-catch statements. seanyoung
• Optimize modifiers' CFGs. xermicus
• Fix an error whereby building large contracts would cause an LLVM error. LucasSte
• A constructor for a Solana contract cannot run twice on the same data account. seanyoung
• Split the call and deploy dispatches on Substrate. xermicus

Changed

• Minimum Supported Rust Version (MSRV) is Rust 1.68.
• @payer annotation declares an account in a constructor. LucasSte
• Do not allow .call() functions in functions declared as view. seanyoung
• Storage accessor function matches solc, and returns struct members if the sole return value is a single struct seanyoung
• breaking Constructor annotations above a constructor can either declare an account or receive a literal parameter. LucasSte

  contract MyContract {
    @payer(acc) // Declares account acc
    @space(2+3) // Only literals or constant expressions allowed
    @seed(myseed) // NOT ALLOWED
    constructor(bytes myseed) {}
  }
  

• Annotations placed before constructor arguments refer to the latter. LucasSte

  contract MyContract {
    @payer(acc) // Declares account acc
    @space(2+3) // Only literals or constant expressions allowed
    constructor(@seed bytes myseed) {}
    // When an annotations refers to a parameter, the former must appear right before the latter.
  }