CPP: Add similar test cases with function pointers.

Author: geoffw0

cpp/ql/test/query-tests/jsf/4.10 Classes/AV Rule 79/AV Rule 79.expected

@@ -13,6 +13,8 @@
 | Lambda.cpp:7:3:7:21 | ... = ... | Resource r1 is acquired by class testLambda but not released anywhere in this class. |
 | Lambda.cpp:12:3:12:21 | ... = ... | Resource r2 is acquired by class testLambda but not released anywhere in this class. |
 | Lambda.cpp:24:3:24:21 | ... = ... | Resource r4 is acquired by class testLambda but not released anywhere in this class. |
+| Lambda.cpp:26:3:26:21 | ... = ... | Resource r5 is acquired by class testLambda but not released anywhere in this class. |
+| Lambda.cpp:29:3:29:21 | ... = ... | Resource r6 is acquired by class testLambda but not released in the destructor. It is released from deleter_for_r6 on line 40, so this function may need to be called from the destructor. |
 | ListDelete.cpp:21:3:21:21 | ... = ... | Resource first is acquired by class MyThingColection but not released anywhere in this class. |
 | NoDestructor.cpp:23:3:23:20 | ... = ... | Resource n is acquired by class MyClass5 but not released anywhere in this class. |
 | PlacementNew.cpp:36:3:36:36 | ... = ... | Resource p1 is acquired by class MyTestForPlacementNew but not released anywhere in this class. |

cpp/ql/test/query-tests/jsf/4.10 Classes/AV Rule 79/Lambda.cpp

@@ -22,15 +22,35 @@ class testLambda
 		deleter3(); 
 
 		r4 = new char[4096]; // BAD
+
+		r5 = new char[4096]; // GOOD [FALSE POSITIVE]
+		deleter5 = &deleter_for_r5;
+
+		r6 = new char[4096]; // GOOD [FALSE POSITIVE]
+		deleter6 = &testLambda::deleter_for_r6;
+	}
+
+	static void deleter_for_r5(char *r)
+	{
+		delete [] r;
+	}
+
+	void deleter_for_r6()
+	{
+		delete [] r6;
 	}
 
 	~testLambda()
 	{
 		deleter1(r1);
+		deleter5(r5);
+		((*this).*deleter6)();
 	}
 
 private:
-	char *r1, *r2, *r3, *r4;
+	char *r1, *r2, *r3, *r4, *r5, *r6;
 
-	void (*deleter1)(char *r); 
+	void (*deleter1)(char *r);
+	void (*deleter5)(char *r);
+	void (testLambda::*deleter6)();
 };