diff --git a/include/rapidjson/document.h b/include/rapidjson/document.h
index a6acc24..d25c5c0 100644
--- a/include/rapidjson/document.h
+++ b/include/rapidjson/document.h
@@ -26,15 +26,13 @@
 #include <limits>
 
 RAPIDJSON_DIAG_PUSH
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
-RAPIDJSON_DIAG_OFF(4244) // conversion from kXxxFlags to 'uint16_t', possible loss of data
-#endif
-
 #ifdef __clang__
 RAPIDJSON_DIAG_OFF(padded)
 RAPIDJSON_DIAG_OFF(switch-enum)
 RAPIDJSON_DIAG_OFF(c++98-compat)
+#elif defined(_MSC_VER)
+RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
+RAPIDJSON_DIAG_OFF(4244) // conversion from kXxxFlags to 'uint16_t', possible loss of data
 #endif
 
 #ifdef __GNUC__
diff --git a/include/rapidjson/encodings.h b/include/rapidjson/encodings.h
index 7903e76..12b562a 100644
--- a/include/rapidjson/encodings.h
+++ b/include/rapidjson/encodings.h
@@ -17,7 +17,7 @@
 
 #include "rapidjson.h"
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4244) // conversion from 'type1' to 'type2', possible loss of data
 RAPIDJSON_DIAG_OFF(4702)  // unreachable code
@@ -709,7 +709,7 @@ struct Transcoder<Encoding, Encoding> {
 
 RAPIDJSON_NAMESPACE_END
 
-#if defined(__GNUC__) || defined(_MSC_VER)
+#if defined(__GNUC__) || (defined(_MSC_VER) && !defined(__clang__))
 RAPIDJSON_DIAG_POP
 #endif
 
diff --git a/include/rapidjson/internal/meta.h b/include/rapidjson/internal/meta.h
index 5a9aaa4..d401edf 100644
--- a/include/rapidjson/internal/meta.h
+++ b/include/rapidjson/internal/meta.h
@@ -21,7 +21,8 @@
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(effc++)
 #endif
-#if defined(_MSC_VER)
+
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(6334)
 #endif
@@ -174,7 +175,11 @@ template <typename T> struct RemoveSfinaeTag<SfinaeTag&(*)(T)> { typedef T Type;
 RAPIDJSON_NAMESPACE_END
 //@endcond
 
-#if defined(__GNUC__) || defined(_MSC_VER)
+#if defined(_MSC_VER) && !defined(__clang__)
+RAPIDJSON_DIAG_POP
+#endif
+
+#ifdef __GNUC__
 RAPIDJSON_DIAG_POP
 #endif
 
diff --git a/include/rapidjson/internal/regex.h b/include/rapidjson/internal/regex.h
index e1a2faa..de06718 100644
--- a/include/rapidjson/internal/regex.h
+++ b/include/rapidjson/internal/regex.h
@@ -24,6 +24,9 @@ RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(padded)
 RAPIDJSON_DIAG_OFF(switch-enum)
 RAPIDJSON_DIAG_OFF(implicit-fallthrough)
+#elif defined(_MSC_VER)
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(4512) // assignment operator could not be generated
 #endif
 
 #ifdef __GNUC__
@@ -34,11 +37,6 @@ RAPIDJSON_DIAG_OFF(implicit-fallthrough)
 #endif
 #endif
 
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_PUSH
-RAPIDJSON_DIAG_OFF(4512) // assignment operator could not be generated
-#endif
-
 #ifndef RAPIDJSON_REGEX_VERBOSE
 #define RAPIDJSON_REGEX_VERBOSE 0
 #endif
@@ -723,11 +721,11 @@ typedef GenericRegexSearch<Regex> RegexSearch;
 } // namespace internal
 RAPIDJSON_NAMESPACE_END
 
-#ifdef __clang__
+#ifdef __GNUC__
 RAPIDJSON_DIAG_POP
 #endif
 
-#ifdef _MSC_VER
+#if defined(__clang__) || defined(_MSC_VER)
 RAPIDJSON_DIAG_POP
 #endif
 
diff --git a/include/rapidjson/istreamwrapper.h b/include/rapidjson/istreamwrapper.h
index 8639c8c..5f81698 100644
--- a/include/rapidjson/istreamwrapper.h
+++ b/include/rapidjson/istreamwrapper.h
@@ -21,9 +21,7 @@
 #ifdef __clang__
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(padded)
-#endif
-
-#ifdef _MSC_VER
+#elif defined(_MSC_VER)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4351) // new behavior: elements of array 'array' will be default initialized
 #endif
diff --git a/include/rapidjson/pointer.h b/include/rapidjson/pointer.h
index 8bcb85e..3d339f2 100644
--- a/include/rapidjson/pointer.h
+++ b/include/rapidjson/pointer.h
@@ -21,9 +21,7 @@
 #ifdef __clang__
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(switch-enum)
-#endif
-
-#ifdef _MSC_VER
+#elif defined(_MSC_VER)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4512) // assignment operator could not be generated
 #endif
@@ -1352,11 +1350,7 @@ bool EraseValueByPointer(T& root, const CharType(&source)[N]) {
 
 RAPIDJSON_NAMESPACE_END
 
-#ifdef __clang__
-RAPIDJSON_DIAG_POP
-#endif
-
-#ifdef _MSC_VER
+#if defined(__clang__) || defined(_MSC_VER)
 RAPIDJSON_DIAG_POP
 #endif
 
diff --git a/include/rapidjson/rapidjson.h b/include/rapidjson/rapidjson.h
index aa3de99..9a476f6 100644
--- a/include/rapidjson/rapidjson.h
+++ b/include/rapidjson/rapidjson.h
@@ -433,7 +433,7 @@ template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
 template <size_t x> struct StaticAssertTest {};
 RAPIDJSON_NAMESPACE_END
 
-#if defined(__GNUC__)
+#if defined(__GNUC__) || defined(__clang__)
 #define RAPIDJSON_STATIC_ASSERT_UNUSED_ATTRIBUTE __attribute__((unused))
 #else
 #define RAPIDJSON_STATIC_ASSERT_UNUSED_ATTRIBUTE 
diff --git a/include/rapidjson/reader.h b/include/rapidjson/reader.h
index 084efaa..e6a696c 100644
--- a/include/rapidjson/reader.h
+++ b/include/rapidjson/reader.h
@@ -37,17 +37,15 @@
 #include <arm_neon.h>
 #endif
 
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_PUSH
-RAPIDJSON_DIAG_OFF(4127)  // conditional expression is constant
-RAPIDJSON_DIAG_OFF(4702)  // unreachable code
-#endif
-
 #ifdef __clang__
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(old-style-cast)
 RAPIDJSON_DIAG_OFF(padded)
 RAPIDJSON_DIAG_OFF(switch-enum)
+#elif defined(_MSC_VER)
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(4127)  // conditional expression is constant
+RAPIDJSON_DIAG_OFF(4702)  // unreachable code
 #endif
 
 #ifdef __GNUC__
@@ -2206,7 +2204,7 @@ typedef GenericReader<UTF8<>, UTF8<> > Reader;
 
 RAPIDJSON_NAMESPACE_END
 
-#ifdef __clang__
+#if defined(__clang__) || defined(_MSC_VER)
 RAPIDJSON_DIAG_POP
 #endif
 
@@ -2215,8 +2213,4 @@ RAPIDJSON_DIAG_POP
 RAPIDJSON_DIAG_POP
 #endif
 
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_POP
-#endif
-
 #endif // RAPIDJSON_READER_H_
diff --git a/include/rapidjson/schema.h b/include/rapidjson/schema.h
index 35748cc..d8caf9b 100644
--- a/include/rapidjson/schema.h
+++ b/include/rapidjson/schema.h
@@ -63,9 +63,7 @@ RAPIDJSON_DIAG_OFF(weak-vtables)
 RAPIDJSON_DIAG_OFF(exit-time-destructors)
 RAPIDJSON_DIAG_OFF(c++98-compat-pedantic)
 RAPIDJSON_DIAG_OFF(variadic-macros)
-#endif
-
-#ifdef _MSC_VER
+#elif defined(_MSC_VER)
 RAPIDJSON_DIAG_OFF(4512) // assignment operator could not be generated
 #endif
 
diff --git a/include/rapidjson/writer.h b/include/rapidjson/writer.h
index a978891..49cc0fb 100644
--- a/include/rapidjson/writer.h
+++ b/include/rapidjson/writer.h
@@ -36,16 +36,14 @@
 #include <arm_neon.h>
 #endif
 
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_PUSH
-RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
-#endif
-
 #ifdef __clang__
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(padded)
 RAPIDJSON_DIAG_OFF(unreachable-code)
 RAPIDJSON_DIAG_OFF(c++98-compat)
+#elif defined(_MSC_VER)
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
 #endif
 
 RAPIDJSON_NAMESPACE_BEGIN
@@ -705,11 +703,7 @@ inline bool Writer<StringBuffer>::ScanWriteUnescapedString(StringStream& is, siz
 
 RAPIDJSON_NAMESPACE_END
 
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_POP
-#endif
-
-#ifdef __clang__
+#if defined(_MSC_VER) || defined(__clang__)
 RAPIDJSON_DIAG_POP
 #endif
 
diff --git a/test/unittest/istreamwrappertest.cpp b/test/unittest/istreamwrappertest.cpp
index 9d6fbcf..94480cd 100644
--- a/test/unittest/istreamwrappertest.cpp
+++ b/test/unittest/istreamwrappertest.cpp
@@ -20,7 +20,7 @@
 #include <sstream>
 #include <fstream>
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(4702) // unreachable code
 #endif
@@ -176,6 +176,6 @@ TEST(IStreamWrapper, wfstream) {
 
 #endif
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 RAPIDJSON_DIAG_POP
 #endif
diff --git a/test/unittest/schematest.cpp b/test/unittest/schematest.cpp
index 8cf1c68..c64bf78 100644
--- a/test/unittest/schematest.cpp
+++ b/test/unittest/schematest.cpp
@@ -20,6 +20,9 @@
 #ifdef __clang__
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(variadic-macros)
+#elif defined(_MSC_VER)
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(4822) // local class member function does not have a body
 #endif
 
 using namespace rapidjson;
@@ -2007,6 +2010,10 @@ TEST(SchemaValidator, Ref_remote) {
 TEST(SchemaValidator, Ref_remote_issue1210) {
     class SchemaDocumentProvider : public IRemoteSchemaDocumentProvider {
         SchemaDocument** collection;
+
+        SchemaDocumentProvider(const SchemaDocumentProvider&);
+        SchemaDocumentProvider& operator=(const SchemaDocumentProvider&);
+
         public:
           SchemaDocumentProvider(SchemaDocument** collection) : collection(collection) { }
           virtual const SchemaDocument* GetRemoteDocument(const char* uri, SizeType length) {
@@ -2033,6 +2040,6 @@ TEST(SchemaValidator, Ref_remote_issue1210) {
     VALIDATE(sx, "{\"country\":\"US\"}", true);
 }
 
-#ifdef __clang__
+#if defined(_MSC_VER) || defined(__clang__)
 RAPIDJSON_DIAG_POP
 #endif