Fixed #1846 (False positive with -s: Variable hides typedef with same name)

lib/tokenize.cpp

@@ -555,7 +555,8 @@ bool Tokenizer::duplicateTypedef(Token **tokPtr, const Token *name)
             else
             {
                 // look backwards
-                if (Token::Match(tok->previous(), "typedef|}|>|*") ||
+                if (Token::Match(tok->previous(), "typedef|}|>") ||
+                    (tok->previous()->str() == "*" && tok->next()->str() != "(") ||
                     (Token::Match(tok->previous(), "%type%") &&
                      (!Token::Match(tok->previous(), "return|new|const|friend|public|private|protected|throw") &&
                       !Token::Match(tok->tokAt(-2), "friend class"))))

test/testsimplifytokens.cpp

@@ -207,6 +207,7 @@ private:
         TEST_CASE(simplifyTypedef54); // ticket #1814
         TEST_CASE(simplifyTypedef55);
         TEST_CASE(simplifyTypedef56); // ticket #1829
+        TEST_CASE(simplifyTypedef57); // ticket #1846
 
         TEST_CASE(simplifyTypedefFunction1);
         TEST_CASE(simplifyTypedefFunction2); // ticket #1685
@@ -4268,6 +4269,25 @@ private:
         ASSERT_EQUALS("", errout.str());
     }
 
+    void simplifyTypedef57() // ticket #1846
+    {
+        const char code[] = "void foo {\n"
+                            "    typedef int A;\n"
+                            "    A a = A(1) * A(2);\n"
+                            "};\n";
+
+        // The expected result..
+        const std::string expected("void foo { "
+                                   "; "
+                                   "int a ; a = int ( 1 ) * int ( 2 ) ; "
+                                   "} ;");
+        ASSERT_EQUALS(expected, sizeof_(code));
+
+        // Check for output..
+        checkSimplifyTypedef(code);
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void simplifyTypedefFunction1()
     {
         {