Eliminate some gcc 9 warnings.

4 files changed, 6 insertions, 0 deletions

diff --git a/document/src/vespa/document/base/globalid.h b/document/src/vespa/document/base/globalid.h
index dd1d061dbf7..16781145bf0 100644
--- a/document/src/vespa/document/base/globalid.h
+++ b/document/src/vespa/document/base/globalid.h
@@ -89,6 +89,8 @@ public:
      */
     explicit GlobalId(const void *gid) { set(gid); }
 
+    GlobalId(const GlobalId &rhs) = default;
+
     /**
      * Implements the assignment operator.
      *
diff --git a/document/src/vespa/document/datatype/arraydatatype.h b/document/src/vespa/document/datatype/arraydatatype.h
index 55b5af184dd..275878e5dc2 100644
--- a/document/src/vespa/document/datatype/arraydatatype.h
+++ b/document/src/vespa/document/datatype/arraydatatype.h
@@ -27,6 +27,7 @@ public:
     void print(std::ostream&, bool verbose, const std::string& indent) const override;
     bool operator==(const DataType& other) const override;
     ArrayDataType* clone() const override { return new ArrayDataType(*this); }
+    ArrayDataType &operator=(const ArrayDataType &rhs) = default;
     void onBuildFieldPath(FieldPath & path, vespalib::stringref remainFieldName) const override;
 
     DECLARE_IDENTIFIABLE(ArrayDataType);
diff --git a/document/src/vespa/document/update/arithmeticvalueupdate.h b/document/src/vespa/document/update/arithmeticvalueupdate.h
index 1f9e33a3c3a..697798a7275 100644
--- a/document/src/vespa/document/update/arithmeticvalueupdate.h
+++ b/document/src/vespa/document/update/arithmeticvalueupdate.h
@@ -55,6 +55,8 @@ public:
           _operator(update._operator),
           _operand(update._operand) {}
 
+    ArithmeticValueUpdate &operator=(const ArithmeticValueUpdate &rhs) = default;
+
     bool operator==(const ValueUpdate& other) const override;
 
     Operator getOperator() const { return _operator; }
diff --git a/document/src/vespa/document/update/clearvalueupdate.h b/document/src/vespa/document/update/clearvalueupdate.h
index 2ac47deaaf9..49842653e65 100644
--- a/document/src/vespa/document/update/clearvalueupdate.h
+++ b/document/src/vespa/document/update/clearvalueupdate.h
@@ -17,6 +17,7 @@ public:
     typedef std::unique_ptr<ClearValueUpdate> UP;
     ClearValueUpdate() : ValueUpdate() {}
     ClearValueUpdate(const ClearValueUpdate& update) : ValueUpdate(update) {}
+    ClearValueUpdate &operator=(const ClearValueUpdate &rhs) = default;
     bool operator==(const ValueUpdate& other) const override;
 
     void checkCompatibility(const Field& field) const override;