Pieces Protocol

Summary

Variable shadowing can lead to unintended behavior by overwriting or masking state variables.

Vulnerability Details

Instances of local variable shadowing:

• ERC20ToGenerateNftFraccion.constructor: Local variables _name and _symbol shadow state variables in the ERC20 base contract.

Impact

Shadowing increases the risk of errors in logic, especially during contract upgrades or audits.

Tools Used

• Slither: Flagged occurrences of shadowing during analysis.

Recommendations

1. Rename local variables to avoid shadowing (e.g., _localName or _constructorName).

2. Conduct manual code reviews to identify and resolve shadowing instances.

3. Use tools like Slither regularly during development.