Add initial version of checker to check if virtual member functions are called transitively

from C++ constructors or destructors.  Checker by Lei Zhang with a few tweaks by Ted Kremenek.

llvm-svn: 147494

1 files changed, 53 insertions, 0 deletions

diff --git a/clang/test/Analysis/virtualcall.cpp b/clang/test/Analysis/virtualcall.cpp
new file mode 100644
index 00000000000..127d04f58ae
--- /dev/null
+++ b/clang/test/Analysis/virtualcall.cpp
@@ -0,0 +1,53 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=experimental.cplusplus.VirtualCall -analyzer-store region -verify %s
+
+class A {
+public:
+  A();
+  ~A() {};
+  
+  virtual int foo() = 0;
+  virtual void bar() = 0;
+  void f() {
+    foo(); // expected-warning{{Call pure virtual functions during construction or destruction may leads undefined behaviour}}
+  }
+};
+
+class B : public A {
+public:
+  B() {
+    foo(); // expected-warning{{Call virtual functions during construction or destruction will never go to a more derived class}}
+  }
+  ~B();
+  
+  virtual int foo();
+  virtual void bar() { foo(); }  // expected-warning{{Call virtual functions during construction or destruction will never go to a more derived class}}
+};
+
+A::A() {
+  f();
+}
+
+B::~B() {
+  this->B::foo(); // no-warning
+  this->B::bar();
+  this->foo(); // expected-warning{{Call virtual functions during construction or destruction will never go to a more derived class}}
+}
+
+class C : public B {
+public:
+  C();
+  ~C();
+  
+  virtual int foo();
+  void f(int i);
+};
+
+C::C() {
+  f(foo()); // expected-warning{{Call virtual functions during construction or destruction will never go to a more derived class}}
+}
+
+int main() {
+  A *a;
+  B *b;
+  C *c;
+}