1// RUN: %clang_cc1 %s -verify
2
3#define SOME_ADDR (unsigned long long)0
4
5// PR10837: Warn if a non-pointer-typed expression is folded to a null pointer
6int *p = 0;
7int *q = '\0'; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
8int *r = (1 - 1); // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
9void f() {
10  p = 0;
11  q = '\0'; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
12  r = 1 - 1; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
13  p = SOME_ADDR; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
14}
15