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@ZR74 ZR74 commented Feb 4, 2026

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

  • N
  • Y

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

  • Affects user behaviors
  • Contains CI/CD configuration changes
  • Contains documentation changes
  • Contains experimental features
  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

  • N
  • Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

  • Unit test
  • Integration test
  • Benchmark (add benchmark stats below)
  • Manual test (add detailed scripts or steps below)
  • Other

6. Release note

None

Copilot AI review requested due to automatic review settings February 4, 2026 09:55
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Pull request overview

This PR adds validation to ensure that EVM jump destinations do not have any high bits (bits 64-255) set in their uint256 values. This is a security fix that prevents jumps to addresses outside the valid 64-bit address space.

Changes:

  • Modified the interpreter to return max uint64_t when high bits are set, triggering existing validation
  • Added compile-time checks in the MIR compiler to validate jump destinations at both constant and runtime
  • Ensured consistent validation across both JUMP and JUMPI opcodes

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File Description
src/evm/interpreter.cpp Modified Uint256ToUint64 lambda to check high bits and return max uint64_t if set, added <limits> include
src/compiler/evm_frontend/evm_mir_compiler.cpp Added high-bit validation for constant and non-constant jump destinations in both handleJump and handleJumpI functions

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