1 // RUN: %clangxx_msan -O0 %s -o %t && %run %t %p 2>&1 2 // RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t %p 2>&1 3 // RUN: %clangxx_msan -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 #if defined(__FreeBSD__) 14 #include <sys/socket.h> // To define 'struct sockaddr'. 15 #endif 16 17 #include <sanitizer/msan_interface.h> 18 19 #define CHECK_AND_PUSH(addr, size) \ 20 if (addr) { \ 21 assert(-1 == __msan_test_shadow(addr, sizeof(size))); \ 22 ranges.push_back(std::make_pair((void *)addr, (size_t)size)); \ 23 } 24 25 int main(int argc, char *argv[]) { 26 struct ifaddrs *ifas; 27 28 assert(0 == __msan_test_shadow(&ifas, sizeof(ifaddrs *))); 29 int res = getifaddrs(&ifas); 30 if (res == -1) { 31 assert(errno == ENOSYS); 32 printf("getifaddrs() is not implemented\n"); 33 return 0; 34 } 35 assert(res == 0); 36 assert(-1 == __msan_test_shadow(&ifas, sizeof(ifaddrs *))); 37 38 std::vector<std::pair<void *, size_t> > ranges; 39 ifaddrs *p = ifas; 40 while (p) { 41 CHECK_AND_PUSH(p, sizeof(ifaddrs)); 42 CHECK_AND_PUSH(p->ifa_name, strlen(p->ifa_name) + 1); 43 CHECK_AND_PUSH(p->ifa_addr, sizeof(*p->ifa_addr)); 44 CHECK_AND_PUSH(p->ifa_netmask, sizeof(*p->ifa_netmask)); 45 CHECK_AND_PUSH(p->ifa_broadaddr, sizeof(*p->ifa_broadaddr)); 46 CHECK_AND_PUSH(p->ifa_dstaddr, sizeof(*p->ifa_dstaddr)); 47 p = p->ifa_next; 48 } 49 50 freeifaddrs(ifas); 51 for (int i = 0; i < ranges.size(); i++) 52 assert(0 == __msan_test_shadow(ranges[i].first, ranges[i].second)); 53 return 0; 54 } 55
