memory leak: Added command line flag '--vcl' that is used to suppress error messages for VCL code

src/checkmemoryleak.cpp

@@ -426,7 +426,19 @@ Token *CheckMemoryLeakClass::getcode(const Token *tok, std::list<const Token *>
                     if (isclass(tok->tokAt(3)))
                     {
                         if (_settings._showAll)
+                        {
+
+                            if (_settings._vcl && Token::Match(tok->tokAt(4), "( %var%") && (tok->strAt(3)[0] == 'T'))
+                            {
+                                // Guess this is a VCL class with automatic deallocation
+                                alloc = No;
+                            }
+                            else
+                            {
+                                // The checking will proceed.. but any error messages that are shown are shown thanks to "--all"
                                 all = true;
+                            }
+                        }
                         else
                             alloc = No;
                     }

src/cppcheck.cpp

@@ -104,6 +104,10 @@ std::string CppCheck::parseFromArgs(int argc, const char* const argv[])
         else if (strcmp(argv[i], "--unused-functions") == 0)
             _settings._unusedFunctions = true;
 
+        // Write results in results.xml
+        else if (strcmp(argv[i], "--vcl") == 0)
+            _settings._vcl = true;
+
         // Print help
         else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0)
         {
@@ -169,7 +173,7 @@ std::string CppCheck::parseFromArgs(int argc, const char* const argv[])
         "\n"
         "Syntax:\n"
         "    cppcheck [--all] [--force] [--help] [-Idir] [--quiet] [--style]\n"
-        "             [--unused-functions] [--verbose] [--xml]\n"
+        "             [--unused-functions] [--verbose] [--vcl] [--xml]\n"
         "             [file or path1] [file or path]\n"
         "\n"
         "If path is given instead of filename, *.cpp, *.cxx, *.cc, *.c++ and *.c files\n"
@@ -186,6 +190,7 @@ std::string CppCheck::parseFromArgs(int argc, const char* const argv[])
         "    -q, --quiet          Only print error messages\n"
         "    -s, --style          Check coding style\n"
         "    --unused-functions   Check if there are unused functions\n"
+        "    --vcl                Suppress messages about memory leaks when using VCL classes\n"
         "    -v, --verbose        More detailed error reports\n"
         "    --xml                Write results in xml to error stream.\n"
         "\n"

src/settings.cpp

@@ -30,6 +30,7 @@ Settings::Settings()
     _xml = false;
     _unusedFunctions = false;
     _security = false;
+    _vcl = false;
 }
 
 Settings::~Settings()

src/settings.h

@@ -48,6 +48,9 @@ public:
 
     /** Security checks */
     bool _security;
+
+    /** Disable warnings for VCL classes */
+    bool _vcl;
 };
 
 #endif // SETTINGS_H

test/testmemleak.cpp

@@ -192,6 +192,9 @@ private:
         TEST_CASE(unknownFunction1);
         TEST_CASE(unknownFunction2);
         TEST_CASE(unknownFunction3);
+
+        // VCL..
+        TEST_CASE(vcl1);
     }
 
 
@@ -1886,6 +1889,37 @@ private:
         ASSERT_EQUALS("[test.cpp:5]: (error) Memory leak: p\n", errout.str());
     }
 
+
+
+
+    void vcl1()
+    {
+        const char code[] = "void Form1::foo()\n"
+                            "{\n"
+                            "    TEdit *Edit1 = new TEdit(this);\n"
+                            "}\n";
+
+        // Tokenize..
+        Tokenizer tokenizer;
+        std::istringstream istr(code);
+        tokenizer.tokenize(istr, "test.cpp");
+        tokenizer.setVarId();
+        tokenizer.simplifyTokenList();
+
+        // Clear the error buffer..
+        errout.str("");
+
+        // Check for memory leaks..
+        Settings settings;
+        settings._debug = true;
+        settings._showAll = true;
+        settings._vcl = true;
+        CheckMemoryLeakClass checkMemoryLeak(&tokenizer, settings, this);
+        checkMemoryLeak.CheckMemoryLeak();
+
+        ASSERT_EQUALS("", errout.str());
+    }
+
 };
 
 REGISTER_TEST(TestMemleak)