Fix move assignment

commit_hash:e8b2304f773f981dd79203f68a204671954ee399

1 files changed, 8 insertions, 2 deletions

diff --git a/library/cpp/histogram/hdr/histogram.cpp b/library/cpp/histogram/hdr/histogram.cpp
index 175179f38ae..4d9904fb22f 100644
--- a/library/cpp/histogram/hdr/histogram.cpp
+++ b/library/cpp/histogram/hdr/histogram.cpp
@@ -51,8 +51,14 @@ namespace NHdr {
     }
 
     THistogram& THistogram::operator=(THistogram&& rhs) noexcept {
-        Data_ = std::move(rhs.Data_);
-        Allocator_ = rhs.Allocator_;
+        if (this != &rhs) {
+            if (Data_) {
+                size_t size = GetMemorySize();
+                Allocator_->Release({Data_.Release(), size});
+            }
+            Data_ = std::move(rhs.Data_);
+            Allocator_ = rhs.Allocator_;
+        }
         return *this;
     }