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mythril
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Security analysis tool for EVM bytecode. Supports smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains.
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mythril/tests/testdata/outputs_expected/overflow.sol.markdown

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Analysis Results

Integer Underflow

  • Type: Warning
  • Contract: Over
  • Function name: sendeth(address,uint256)
  • PC address: 649

Description

A possible integer underflow exists in the function sendeth(address,uint256). The subtraction may result in a value < 0.

In /inputs/overflow.sol:12

balances[msg.sender] -= _value

Integer Overflow

  • Type: Warning
  • Contract: Over
  • Function name: sendeth(address,uint256)
  • PC address: 725

Description

A possible integer overflow exists in the function sendeth(address,uint256). The addition may result in a value higher than the maximum representable integer.

In /inputs/overflow.sol:13

balances[_to] += _value

Integer Underflow

  • Type: Warning
  • Contract: Over
  • Function name: sendeth(address,uint256)
  • PC address: 567

Description

A possible integer underflow exists in the function sendeth(address,uint256). The subtraction may result in a value < 0.

In /inputs/overflow.sol:11

balances[msg.sender] - _value