Ethereum Debugging Issue: “NotActivated Error While Debugging Foundry Test”
As a developer working on smart contracts on the Ethereum blockchain, I often encounter issues while testing and debugging. In this article, we will look at a possible reason why you might be experiencing the “NotActivated” error while debugging.
Understanding the Error
When an Ethereum test is successfully executed, it must first call a contract function with the opcode “CALLDATALOAD” to load data from storage. This is followed by a single ‘CALLER’ opcode to call the contract function. Then, two opcodes “PUSH0” and “PUSH1” are executed to push data onto the stack.
Issue: Not Activated Error
“The ‘NotActivated’ error received typically occurs when a test does not properly activate a smart contract after executing the above opcode sequence. This can occur in several scenarios:
- Incorrect activation order: If a test calls ‘CALLDATALOAD’ and then ‘CALLER’, but not vice versa, this can result in incorrect activation order.
- No or insufficient space to store data: The contract operation may require more data than `CALLDATALOAD’ loaded. This can be caused by missing dependencies or insufficient storage space.
- Incorrect push order: If a test does not properly push data onto the stack, it may not be launched.
Workarounds and workarounds
To fix this issue, try the following solutions:
Solution 1: Change CALLDATALOAD order to PUSH0
Replace opcode sequence with this fixed version:
CALLDATALOAD
CALLER
PUSH0
PUSH1
This should reactivate the smart contract.
Solution 2: Add “PUSH0” before “CALLDATALOAD”.
Try adding “PUSH0” before “CALLDATALOAD” to ensure the correct activation order:
CALLDATALOAD
PUSH0
CALLER
Solution 3: Check the data warehouse
Make sure your contract function requires warehouse data. If the contract requires additional data, you may need to add a LOADDATA opcode before calling it.
CALLER
LOADDATA(self-contract address)
Solution 4: Check for missing dependencies or insufficient data
Check that all dependencies are installed and sufficient in your test environment.
Solution 5: Use a different Foundry test environment
If none of the above solutions work, you can try a different Foundry test environment or switch to a different test environment.