13 nullptr_t f(nullptr_t null)  in f()  argument
16   null = nullptr;  in f()
18   p = null;  in f()
20   pi = null;  in f()
21   null = 0;  in f()
23   pm = null;  in f()
25   pf = null;  in f()
27   pmf = null;  in f()
34   (void)(null == nullptr);  in f()
35   (void)(null <= nullptr); // expected-error {{invalid operands to binary expression}}  in f()
36   (void)(null == 0);  in f()
37   (void)(null == (void*)0);  in f()
39   (void)(null <= 0); // expected-error {{invalid operands to binary expression}}  in f()
40   (void)(null <= (void*)0); // expected-error {{invalid operands to binary expression}}  in f()
56   t = o1(null);  in f()
61   nullptr_t *pn = &null;  in f()
186 constexpr int null() { return 0; }  in null()  function
188 void *q = null(); // expected-error {{cannot initialize}}