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Adds syntax tests, documentation and changelog entry.
Refines comment for array utility function.
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@@ -840,7 +840,7 @@ void ArrayUtils::popStorageArrayElement(ArrayType const& _type) const
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let length := and(div(slot_value, 2), 0x1f)
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if iszero(length) { invalid() }
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// Zero-out the suffix inlcluding the least significant byte.
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// Zero-out the suffix including the least significant byte.
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let mask := sub(exp(0x100, sub(33, length)), 1)
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length := sub(length, 1)
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slot_value := or(and(not(mask), slot_value), mul(length, 2))
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