bit_util: bug: Infinite loop in HighestSetBit

src/common/bit_util.h

@@ -101,6 +101,9 @@ inline int HighestSetBit(T value) {
 template <typename T>
 inline size_t LowestSetBit(T value) {
     auto x = static_cast<std::make_unsigned_t<T>>(value);
+    if (x == 0)
+        return BitSize<T>();
+
     size_t result = 0;
     while ((x & 1) == 0) {
         x >>= 1;