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chriseth
2021-03-18 08:42:49 +01:00
parent baf2ff2a6e
commit d18db63843
2 changed files with 2 additions and 1 deletions
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libevmasm/RuleList.h
+1 -1
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@@ -60,7 +60,7 @@ template <class S> S shlWorkaround(S const& _x, unsigned _amount)
/// @returns k if _x == 2**k, nullopt otherwise
inline std::optional<size_t> binaryLogarithm(u256 const& _x)
{
if (!_x)
if (_x == 0)
return std::nullopt;
size_t msb = boost::multiprecision::msb(_x);
return (u256(1) << msb) == _x ? std::make_optional(msb) : std::nullopt;