clang/test/Analysis/method-call-path-notes.cpp

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -verify %s
   2 // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=plist-multi-file  %s -o %t.plist
   3 // RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/method-call-path-notes.cpp.plist -
   4
   5 // Test warning about null or uninitialized pointer values used as instance member
   6 // calls.
   7 class TestInstanceCall {
   8 public:
   9   void foo() {}
  10 };
  11
  12 void test_ic() {
  13   TestInstanceCall *p; // expected-note {{'p' declared without an initial value}}
  14   p->foo(); // expected-warning {{Called C++ object pointer is uninitialized}} expected-note {{Called C++ object pointer is uninitialized}}
  15 }
  16
  17 void test_ic_null() {
  18   TestInstanceCall *p = 0; // expected-note {{'p' initialized to a null pointer value}}
  19   p->foo(); // expected-warning {{Called C++ object pointer is null}} expected-note {{Called C++ object pointer is null}}
  20 }
  21
  22 void test_ic_set_to_null() {
  23   TestInstanceCall *p;
  24   p = 0; // expected-note {{Null pointer value stored to 'p'}}
  25   p->foo(); // expected-warning {{Called C++ object pointer is null}} expected-note {{Called C++ object pointer is null}}
  26 }
  27
  28 void test_ic_null(TestInstanceCall *p) {
  29   if (!p) // expected-note {{Assuming 'p' is null}} expected-note {{Taking true branch}}
  30     p->foo(); // expected-warning {{Called C++ object pointer is null}} expected-note{{Called C++ object pointer is null}}
  31 }
  32
  33 void test_ic_member_ptr() {
  34   TestInstanceCall *p = 0; // expected-note {{'p' initialized to a null pointer value}}
  35   typedef void (TestInstanceCall::*IC_Ptr)();
  36   IC_Ptr bar = &TestInstanceCall::foo;
  37   (p->*bar)(); // expected-warning {{Called C++ object pointer is null}} expected-note{{Called C++ object pointer is null}}
  38 }
  39
  40 void test_cast(const TestInstanceCall *p) {
  41   if (!p) // expected-note {{Assuming 'p' is null}} expected-note {{Taking true branch}}
  42     const_cast<TestInstanceCall *>(p)->foo(); // expected-warning {{Called C++ object pointer is null}} expected-note {{Called C++ object pointer is null}}
  43 }
  44