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Allowed Time - 10 sec
Best time - 6.708 sec
In EVM, which opcode can silently fail and return a boolean instead of reverting?
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#A
#B
#C
#D
Explanation:
Low-level CALL (and friends like DELEGATECALL) returns a success flag rather than automatically bubbling a revert. If you don’t check that boolean (or decode return data properly), your contract may continue in a “success-looking” state while the external call actually failed. This is a classic Solidity audit finding tied to unsafe external interactions.
