complex.c revision a4c7a4314ffbe402091695874e93d9b0a79c8099 
1// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=basic -verify -Wno-unreachable-code -ffreestanding %s
2// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=range -verify -Wno-unreachable-code -ffreestanding %s
3
4#include <stdint.h>
5
6void f1(int * p) {
7
8  // This branch should be infeasible
9  // because __imag__ p is 0.
10  if (!p && __imag__ (intptr_t) p)
11    *p = 1; // no-warning
12
13  // If p != 0 then this branch is feasible; otherwise it is not.
14  if (__real__ (intptr_t) p)
15    *p = 1; // no-warning
16
17  *p = 2; // expected-warning{{Dereference of null pointer}}
18}
19