Fixed #3419 (false positive: (style) Same expression on both sides of '&'.)

lib/checkother.cpp

@@ -2646,6 +2646,11 @@ void CheckOther::checkExpressionRange(const std::list<Function> &constFunctions,
         unsigned int parantheses = 0;  // ()
         unsigned int brackets = 0;     // []
 
+        // taking address?
+        if (Token::Match(it->second.end->previous(), "%op% &")) {
+            continue;
+        }
+
         for (const Token *tok = it->second.start; tok && tok != it->second.end; tok = tok->next()) {
             if (tok->str() == "(") {
                 ++parantheses;

test/testother.cpp

@@ -2773,6 +2773,12 @@ private:
               "}\n"
              );
         ASSERT_EQUALS("", errout.str());
+
+        // #3419
+        check("void f() {\n"
+              "    if ( &q != &a && &q != &b ) { }\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void secondAlwaysTrueFalseWhenFirstTrueError() {