runtimeverification / runtimeverification/evm-semantics

Fix warnings on non-exhaustive matches for rules

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kevm
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KCL
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Description

These warnings are emitted during the kompilation process.

[Warning] Compiler: Non exhaustive match detected:
`#lenOfHead(_)_EVM-ABI_Int_TypedArg`(`abi_type_tuple`(_))
        Source(/nix/store/0ldpwmslqv838p5gcw0cadyxnd96nbdm-python3.10-kevm-pyk-1.0.406/lib/python3.10/site-packages/kevm_pyk/kproj/evm-semantics/abi.md)
        Location(291,20,291,61)
        291 |       syntax Int ::= #lenOfHead ( TypedArg ) [function, total]
            .                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Warning] Compiler: Non exhaustive match detected:
`#isStaticType(_)_EVM-ABI_Bool_TypedArg`(`abi_type_tuple`(_))
        Source(/nix/store/0ldpwmslqv838p5gcw0cadyxnd96nbdm-python3.10-kevm-pyk-1.0.406/lib/python3.10/site-packages/kevm_pyk/kproj/evm-semantics/abi.md)
        Location(402,21,402,65)
        402 |       syntax Bool ::= #isStaticType ( TypedArg ) [function, total]
            .                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Warning] Compiler: Non exhaustive match detected:
`_<Gas__GAS-SYNTAX_Bool_Gas_Gas`(infGas(_),_)
        Source(/nix/store/0ldpwmslqv838p5gcw0cadyxnd96nbdm-python3.10-kevm-pyk-1.0.406/lib/python3.10/site-packages/kevm_pyk/kproj/evm-semantics/gas.md)
        Location(23,21,23,54)
        23 |        syntax Bool ::= Gas  "<Gas" Gas [function, total]
           .                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Warning] Compiler: Non exhaustive match detected:
`_<=Gas__GAS-SYNTAX_Bool_Gas_Gas`(infGas(_),infGas(_))
        Source(/nix/store/0ldpwmslqv838p5gcw0cadyxnd96nbdm-python3.10-kevm-pyk-1.0.406/lib/python3.10/site-packages/kevm_pyk/kproj/evm-semantics/gas.md)
        Location(24,21,24,54)
        24 |                      | Gas "<=Gas" Gas [function, total]
        ```

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the rules at abi.md lines 291 and 402 and gas.md lines 23 and 24, using the compiler warnings as the entry point. Inspect why these matches are reported as non-exhaustive and update the rules so the listed warnings are no longer emitted during compilation.

Written by the indexing model from the issue text.

Assessment

Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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