diff --git a/dbms/src/Common/PODArray.h b/dbms/src/Common/PODArray.h
index bb1d0b7d510..e8a0ce85be0 100644
--- a/dbms/src/Common/PODArray.h
+++ b/dbms/src/Common/PODArray.h
@@ -11,6 +11,7 @@
 #ifdef __clang__
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
+#pragma clang diagnostic ignored "-Wreserved-id-macro"
 #endif
 
 #include <boost/noncopyable.hpp>
diff --git a/dbms/src/DataStreams/RemoteBlockInputStream.cpp b/dbms/src/DataStreams/RemoteBlockInputStream.cpp
index 7b851ec8469..0aa129e264f 100644
--- a/dbms/src/DataStreams/RemoteBlockInputStream.cpp
+++ b/dbms/src/DataStreams/RemoteBlockInputStream.cpp
@@ -137,9 +137,9 @@ void RemoteBlockInputStream::sendExternalTables()
             for (const auto & table : external_tables)
             {
                 StoragePtr cur = table.second;
-                QueryProcessingStage::Enum stage = QueryProcessingStage::Complete;
+                QueryProcessingStage::Enum read_from_table_stage = QueryProcessingStage::Complete;
                 BlockInputStreams input = cur->read(cur->getColumns().getNamesOfPhysical(), {}, context,
-                    stage, DEFAULT_BLOCK_SIZE, 1);
+                    read_from_table_stage, DEFAULT_BLOCK_SIZE, 1);
                 if (input.size() == 0)
                     res.push_back(std::make_pair(std::make_shared<OneBlockInputStream>(cur->getSampleBlock()), table.first));
                 else
diff --git a/dbms/src/DataStreams/RemoteBlockOutputStream.cpp b/dbms/src/DataStreams/RemoteBlockOutputStream.cpp
index 51fb62ef5a1..d9095ec91b9 100644
--- a/dbms/src/DataStreams/RemoteBlockOutputStream.cpp
+++ b/dbms/src/DataStreams/RemoteBlockOutputStream.cpp
@@ -52,7 +52,7 @@ void RemoteBlockOutputStream::write(const Block & block)
     {
         connection.sendData(block);
     }
-    catch (const NetException & e)
+    catch (const NetException &)
     {
         /// Try to get more detailed exception from server
         if (connection.poll(0))
diff --git a/dbms/src/Dictionaries/CatBoostModel.cpp b/dbms/src/Dictionaries/CatBoostModel.cpp
index 0fc137ff35a..d36ec1ecae0 100644
--- a/dbms/src/Dictionaries/CatBoostModel.cpp
+++ b/dbms/src/Dictionaries/CatBoostModel.cpp
@@ -72,7 +72,6 @@ public:
     ~CatBoostModelHolder() { api->ModelCalcerDelete(handle); }
 
     CatBoostWrapperAPI::ModelCalcerHandle * get() { return handle; }
-    explicit operator CatBoostWrapperAPI::ModelCalcerHandle * () { return handle; }
 };
 
 
diff --git a/dbms/src/Dictionaries/DictionaryBlockInputStream.h b/dbms/src/Dictionaries/DictionaryBlockInputStream.h
index 28459e1c067..24da102aeba 100644
--- a/dbms/src/Dictionaries/DictionaryBlockInputStream.h
+++ b/dbms/src/Dictionaries/DictionaryBlockInputStream.h
@@ -394,7 +394,7 @@ void DictionaryBlockInputStream<DictionaryType, Key>::fillKeyColumns(
             ptr = column->deserializeAndInsertFromArena(ptr);
     }
 
-    for (size_t i = 0, size = columns.size(); i < size; ++i)
+    for (size_t i = 0, num_columns = columns.size(); i < num_columns; ++i)
         res.emplace_back(ColumnWithTypeAndName{ std::move(columns[i]), (*dictionary_structure.key)[i].type, (*dictionary_structure.key)[i].name });
 }
 
diff --git a/dbms/src/Dictionaries/TrieDictionary.cpp b/dbms/src/Dictionaries/TrieDictionary.cpp
index 52227a6c1d4..6b664d4b448 100644
--- a/dbms/src/Dictionaries/TrieDictionary.cpp
+++ b/dbms/src/Dictionaries/TrieDictionary.cpp
@@ -569,7 +569,7 @@ void TrieDictionary::trieTraverse(const btrie_t * tree, Getter && getter) const
 
         if (node && node->right)
         {
-            stack.push(NULL);
+            stack.push(nullptr);
             key |= getBit(stack.size());
             stack.push(node->right);
             while (stack.top()->left)
diff --git a/dbms/src/IO/DoubleConverter.h b/dbms/src/IO/DoubleConverter.h
index a76cdd9f388..f924cfea91f 100644
--- a/dbms/src/IO/DoubleConverter.h
+++ b/dbms/src/IO/DoubleConverter.h
@@ -1,7 +1,16 @@
 #pragma once
 
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdouble-promotion"
+#endif
+
 #include <double-conversion/double-conversion.h>
 
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
 
 namespace DB
 {
diff --git a/dbms/src/Interpreters/Context.h b/dbms/src/Interpreters/Context.h
index 81a4af4b8d1..f730a508e36 100644
--- a/dbms/src/Interpreters/Context.h
+++ b/dbms/src/Interpreters/Context.h
@@ -131,6 +131,7 @@ public:
     static Context createGlobal(std::shared_ptr<IRuntimeComponentsFactory> runtime_components_factory);
     static Context createGlobal();
 
+    Context(const Context &) = default;
     ~Context();
 
     String getPath() const;