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// RUN: %clang_analyze_cc1 -w -x c++ -analyzer-checker=core -analyzer-output=text -verify %s
namespace pr34731 {
int b;
class c {
class B {
public:
double ***d;
B();
};
void e(double **, int);
void f(B &, int &);
};
// Properly track the null pointer in the array field back to the default
// constructor of 'h'.
void c::f(B &g, int &i) {
e(g.d[9], i); // expected-warning{{Array access (via field 'd') results in a null pointer dereference}}
// expected-note@-1{{Array access (via field 'd') results in a null pointer dereference}}
B h, a; // expected-note{{Value assigned to 'h.d'}}
a.d == __null; // expected-note{{Assuming the condition is true}}
a.d != h.d; // expected-note{{Assuming 'a.d' is equal to 'h.d'}}
f(h, b); // expected-note{{Calling 'c::f'}}
}
}
namespace GH124975 {
void no_crash_in_br_visitors(int *p) {
if (p) {}
// expected-note@-1 {{Assuming 'p' is null}}
// expected-note@-2 {{Taking false branch}}
extern bool ExternLocalCoin;
// expected-note@+2 {{Assuming 'ExternLocalCoin' is false}}
// expected-note@+1 {{Taking false branch}}
if (ExternLocalCoin)
return;
*p = 4;
// expected-warning@-1 {{Dereference of null pointer (loaded from variable 'p')}}
// expected-note@-2 {{Dereference of null pointer (loaded from variable 'p')}}
}
// Thread local variables are implicitly static, so let's test them too.
void thread_local_alternative(int *p) {
if (p) {}
// expected-note@-1 {{Assuming 'p' is null}}
// expected-note@-2 {{Taking false branch}}
thread_local bool ThreadLocalCoin;
// expected-note@+2 {{'ThreadLocalCoin' is false}}
// expected-note@+1 {{Taking false branch}}
if (ThreadLocalCoin)
return;
*p = 4;
// expected-warning@-1 {{Dereference of null pointer (loaded from variable 'p')}}
// expected-note@-2 {{Dereference of null pointer (loaded from variable 'p')}}
}
} // namespace GH124975
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