clang/test/Analysis/inlining/dyn-dispatch-bifurcate.cpp

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -analyzer-config ipa=dynamic-bifurcate -verify -Wno-reinterpret-base-class -analyzer-config eagerly-assume=false %s
   2
   3 void clang_analyzer_eval(bool);
   4
   5 class A {
   6 public:
   7   virtual int get() { return 0; }
   8 };
   9
  10 void testBifurcation(A *a) {
  11   clang_analyzer_eval(a->get() == 0); // expected-warning{{TRUE}} expected-warning{{UNKNOWN}}
  12 }
  13
  14 void testKnown() {
  15   A a;
  16   clang_analyzer_eval(a.get() == 0); // expected-warning{{TRUE}}
  17 }
  18
  19 void testNew() {
  20   A *a = new A();
  21   clang_analyzer_eval(a->get() == 0); // expected-warning{{TRUE}}
  22 }
  23
  24
  25 namespace ReinterpretDisruptsDynamicTypeInfo {
  26   class Parent {};
  27
  28   class Child : public Parent {
  29   public:
  30     virtual int foo() { return 42; }
  31   };
  32
  33   void test(Parent *a) {
  34     Child *b = reinterpret_cast<Child *>(a);
  35     if (!b) return;
  36     clang_analyzer_eval(b->foo() == 42); // expected-warning{{UNKNOWN}}
  37   }
  38 }