1// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t %p 2>&1
2// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1
3// RUN: %clangxx_msan -m64 -O3 %s -o %t && %run %t %p 2>&1
4
5#include <assert.h>
6#include <errno.h>
7#include <ifaddrs.h>
8#include <stdio.h>
9#include <string.h>
10
11#include <vector>
12
13#include <sanitizer/msan_interface.h>
14
15#define CHECK_AND_PUSH(addr, size)                                \
16  if (addr) {                                                     \
17    assert(-1 == __msan_test_shadow(addr, sizeof(size)));         \
18    ranges.push_back(std::make_pair((void *)addr, (size_t)size)); \
19  }
20
21int main(int argc, char *argv[]) {
22  struct ifaddrs *ifas;
23
24  assert(0 == __msan_test_shadow(&ifas, sizeof(ifaddrs *)));
25  int res = getifaddrs(&ifas);
26  if (res == -1) {
27    assert(errno == ENOSYS);
28    printf("getifaddrs() is not implemented\n");
29    return 0;
30  }
31  assert(res == 0);
32  assert(-1 == __msan_test_shadow(&ifas, sizeof(ifaddrs *)));
33
34  std::vector<std::pair<void *, size_t> > ranges;
35  ifaddrs *p = ifas;
36  while (p) {
37    CHECK_AND_PUSH(p, sizeof(ifaddrs));
38    CHECK_AND_PUSH(p->ifa_name, strlen(p->ifa_name) + 1);
39    CHECK_AND_PUSH(p->ifa_addr, sizeof(*p->ifa_addr));
40    CHECK_AND_PUSH(p->ifa_netmask, sizeof(*p->ifa_netmask));
41    CHECK_AND_PUSH(p->ifa_broadaddr, sizeof(*p->ifa_broadaddr));
42    CHECK_AND_PUSH(p->ifa_dstaddr, sizeof(*p->ifa_dstaddr));
43    p = p->ifa_next;
44  }
45
46  freeifaddrs(ifas);
47  for (int i = 0; i < ranges.size(); i++)
48    assert(0 == __msan_test_shadow(ranges[i].first, ranges[i].second));
49  return 0;
50}
51