1 // RUN: %clang_analyze_cc1 -analyze -analyzer-checker core -analyzer-config cfg-temporary-dtors=true,c++-temp-dtor-inlining=true -analyzer-output=text -verify %s
2 
3 namespace test_simple_temporary {
4 class C {
5   int x;
6 
7 public:
8   C(int x): x(x) {} // expected-note{{The value 0 is assigned to field 'x'}}
9   ~C() { x = 1 / x; } // expected-warning{{Division by zero}}
10                       // expected-note@-1{{Division by zero}}
11 };
12 
13 void test() {
14   C(0); // expected-note   {{Passing the value 0 via 1st parameter 'x'}}
15         // expected-note@-1{{Calling constructor for 'C'}}
16         // expected-note@-2{{Returning from constructor for 'C'}}
17         // expected-note@-3{{Calling '~C'}}
18 }
19 } // end namespace test_simple_temporary
20 
21 namespace test_lifetime_extended_temporary {
22 class C {
23   int x;
24 
25 public:
26   C(int x): x(x) {} // expected-note{{The value 0 is assigned to field 'x'}}
27   void nop() const {}
28   ~C() { x = 1 / x; } // expected-warning{{Division by zero}}
29                       // expected-note@-1{{Division by zero}}
30 };
31 
32 void test(int coin) {
33   // We'd divide by zero in the automatic destructor for variable 'c'.
34   const C &c = coin ? C(1) : C(0); // expected-note   {{Assuming 'coin' is 0}}
35                                    // expected-note@-1{{'?' condition is false}}
36                                    // expected-note@-2{{Passing the value 0 via 1st parameter 'x'}}
37                                    // expected-note@-3{{Calling constructor for 'C'}}
38                                    // expected-note@-4{{Returning from constructor for 'C'}}
39   c.nop();
40 } // expected-note{{Calling '~C'}}
41 } // end namespace test_lifetime_extended_temporary
42 
43 namespace test_bug_after_dtor {
44 int glob;
45 
46 class C {
47 public:
48   C() { glob += 1; }
49   ~C() { glob -= 2; } // expected-note{{The value 0 is assigned to 'glob'}}
50 };
51 
52 void test() {
53   glob = 1;
54   C(); // expected-note   {{Calling '~C'}}
55        // expected-note@-1{{Returning from '~C'}}
56   glob = 1 / glob; // expected-warning{{Division by zero}}
57                    // expected-note@-1{{Division by zero}}
58 }
59 } // end namespace test_bug_after_dtor
60