Fixed ticket #390 (wrong allocation and deallocation not detected)

http://sourceforge.net/apps/trac/cppcheck/ticket/390

src/tokenize.cpp

@@ -2569,6 +2569,16 @@ bool Tokenizer::simplifyRedundantParanthesis()
             ret = true;
         }
 
+        while (Token::Match(tok->previous(), "[;{] ( %var% (") &&
+               tok->link()->previous() == tok->tokAt(2)->link())
+        {
+            // We have "( func ( *something* ))", remove the outer
+            // paranthesis
+            tok->link()->deleteThis();
+            tok->deleteThis();
+            ret = true;
+        }
+
         if (Token::Match(tok, "( ( %bool% )") ||
             Token::Match(tok, "( ( %num% )"))
         {

src/tokenize.h

@@ -209,7 +209,9 @@ private:
     bool simplifyFunctionReturn();
 
     /**
-     * Remove redundant paranthesis: "((x))" => "(x)"
+     * Remove redundant paranthesis:
+     * - "((x))" => "(x)"
+     * - "(function())" => "function()"
      * @return true if modifications to token-list are done.
      *         false if no modifications are done.
      */

test/testtokenize.cpp

@@ -130,6 +130,7 @@ private:
         TEST_CASE(removeParantheses1);        // Ticket #61
         TEST_CASE(removeParantheses2);
         TEST_CASE(removeParantheses3);
+        TEST_CASE(removeParantheses4);       // Ticket #390
 
         TEST_CASE(simplify_numeric_condition);
         TEST_CASE(tokenize_double);
@@ -1726,6 +1727,27 @@ private:
         }
     }
 
+    // Simplify "( function (..))" into "function (..)"
+    void removeParantheses4()
+    {
+        const char code[] = "void foo()\n"
+                            "{\n"
+                            "    (free(p));\n"
+                            "}";
+
+        // tokenize..
+        Tokenizer tokenizer;
+        std::istringstream istr(code);
+        tokenizer.tokenize(istr, "test.cpp");
+
+        tokenizer.simplifyTokenList();
+
+        std::ostringstream ostr;
+        for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
+            ostr << " " << tok->str();
+        ASSERT_EQUALS(" void foo ( ) { free ( p ) ; }", ostr.str());
+    }
+
     void simplify_numeric_condition()
     {
         {