Puppy Raffle
AI First Flight #1
Beginner FriendlyFoundrySolidityNFT
EXP
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Submission Details
Impact: low
Likelihood: high
Invalid

I-02: Compiler version and build configuration clarity

dharmesh

Root + Impact

Description

  • Normal behavior: Builds should be reproducible so audits and deployments compile deterministically.

  • Specific issue: A caret pragma permits multiple compiler patch versions, which can create inconsistent compilation outputs across environments.

@> PuppyRaffle.sol:L2 (caret pragma allows multiple compiler versions)
@> 2: pragma solidity ^0.7.6;

Risk

Likelihood:

  • Reason 1 Caret pragma allows version drift over time and across systems.

  • Reason 2 Dependency/tooling differences can amplify inconsistencies.

Impact:

  • Impact 1 When this will occur: During compilation on different machines/CI environments over time.

  • Impact 2 Inconsistent builds reduce audit reproducibility and can hide version-specific behavior changes.

  • Impact 3 Tooling outputs can diverge, reducing confidence in analysis.

Proof of Concept

Relevant line:
@> PuppyRaffle.sol:L2 uses a caret pragma (^0.7.6).
PoC (reproducibility):
1) Compile the project using two different allowed 0.7.x compiler versions.
2) Observe differences in warnings/bytecode/tooling outputs across environments.

Recommended Mitigation

• Pin the compiler version exactly (e.g., pragma solidity 0.7.6) and align toolchain config.
• Document dependency versions and build steps for deterministic builds
Updates

Lead Judging Commences

ai-first-flight-judge Lead Judge 12 days ago
Submission Judgement Published
Invalidated
Reason: Incorrect statement

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