Fixed by #675 (false positive: when operator is overloaded)

src/checkclass.cpp

@@ -130,7 +130,7 @@ CheckClass::Var *CheckClass::getVarList(const Token *tok1, bool withClasses)
             varname = next->strAt(3);
         }
 
-        else if (Token::Match(next, "%type% %var% ["))
+        else if (Token::Match(next, "%type% %var% [") && next->next()->str() != "operator")
         {
             varname = next->strAt(1);
         }

test/testclass.cpp

@@ -431,6 +431,16 @@ private:
                        "};\n");
 
         ASSERT_EQUALS("", errout.str());
+
+        checkUninitVar("class John\n"
+                       "{\n"
+                       "public:\n"
+                       "    John() { }\n"
+                       "\n"
+                       "    double  operator[](const unsigned long i);\n"
+                       "};\n");
+
+        ASSERT_EQUALS("", errout.str());
     }
 
     void uninitMissingFuncDef()