Summary

Some tokens may revert when zero value transfers are made

Vulnerability Details

In spite of the fact that EIP-20 states (https://github.com/ethereum/EIPs/blob/46b9b698815abbfa628cd1097311deee77dd45c5/EIPS/eip-20.md?plain=1#L116) that zero-valued transfers must be accepted, some tokens, such as LEND will revert if this is attempted.

Impact

This may cause transactions that involve other tokens (such as batch operations) to fully revert.

Tools Used

Manual Review

Recommendations

Consider skipping the transfer if the amount is zero, which will also save gas.