1*67e74705SXin Li // RUN: %clang_cc1 %s -verify
2*67e74705SXin Li
3*67e74705SXin Li #define SOME_ADDR (unsigned long long)0
4*67e74705SXin Li
5*67e74705SXin Li // PR10837: Warn if a non-pointer-typed expression is folded to a null pointer
6*67e74705SXin Li int *p = 0;
7*67e74705SXin Li int *q = '\0'; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
8*67e74705SXin Li int *r = (1 - 1); // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
f()9*67e74705SXin Li void f() {
10*67e74705SXin Li p = 0;
11*67e74705SXin Li q = '\0'; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
12*67e74705SXin Li r = 1 - 1; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
13*67e74705SXin Li p = SOME_ADDR; // expected-warning{{expression which evaluates to zero treated as a null pointer constant}}
14*67e74705SXin Li }
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