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 21 int 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
