Try to fix clang and gcc warnings problems again x6

test/unittest/readertest.cpp

@@ -1040,8 +1040,8 @@ public:
     size_t Tell() const { return static_cast<size_t>(is_.tellg()); }
 
     Ch* PutBegin() { assert(false); return 0; }
-    void Put(Ch) { assert(false); }
-    void Flush() { assert(false); }
+    void Put(Ch) RAPIDJSON_NORETURN_SUFFIX { assert(false); }
+    void Flush() RAPIDJSON_NORETURN_SUFFIX { assert(false); }
     size_t PutEnd(Ch*) { assert(false); return 0; }
 
 private:

test/unittest/valuetest.cpp

@@ -487,7 +487,7 @@ TEST(Value, Int64) {
     EXPECT_TRUE(z.IsUint());
     EXPECT_NEAR(2147483648.0, z.GetDouble(), 0.0);
 
-    z.SetInt64(int64_t(4294967298u) + 1);   // 2^32, cannot cast as uint
+    z.SetInt64(int64_t(4294967295u) + 1);   // 2^32, cannot cast as uint
     EXPECT_FALSE(z.IsInt());
     EXPECT_FALSE(z.IsUint());
     EXPECT_NEAR(4294967296.0, z.GetDouble(), 0.0);