2 files changed, 7 insertions, 0 deletions
diff --git a/include/salticidae/stream.h b/include/salticidae/stream.h
index 5b7e936..2d0c963 100644
--- a/include/salticidae/stream.h
+++ b/include/salticidae/stream.h
@@ -286,6 +286,11 @@ class _Bits {
         load(&*arr.begin(), arr.size());
     }
 
+    _Bits(const _Bits &other): nbits(other.nbits), ndata(other.ndata) {
+        data = new _impl_type[ndata];
+        memmove(data.get(), other.data.get(), ndata * sizeof(_impl_type));
+    }
+
     _Bits(const uint8_t *arr, uint32_t len) { load(arr, len); }
     _Bits(uint32_t nbits): nbits(nbits) {
         ndata = (nbits + bit_per_datum - 1) / bit_per_datum;
diff --git a/test/test_stream.cpp b/test/test_stream.cpp
index 0e05146..c9fccac 100644
--- a/test/test_stream.cpp
+++ b/test/test_stream.cpp
@@ -73,6 +73,8 @@ int main() {
     s << a;
     Bits b;
     s >> b;
+    Bits c(b);
+    Bits d(std::move(c));
     printf("%s\n", get_hex(b).c_str());
     print(b, b.size());
     return 0;