compiler-rt/test/msan/if_indextoname.cpp

   1 // RUN: %clangxx_msan -O0 %s -o %t && %run %t 2>&1
   2 // RUN: %clangxx_msan -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %run %t 2>&1
   3 // RUN: %clangxx_msan -O3 %s -o %t && %run %t 2>&1
   4
   5 #include <assert.h>
   6 #include <errno.h>
   7 #include <net/if.h>
   8 #include <stdio.h>
   9 #include <string.h>
  10
  11 #include <sanitizer/msan_interface.h>
  12
  13 int main(int argc, char *argv[]) {
  14   char ifname[IF_NAMESIZE + 1];
  15   assert(0 == __msan_test_shadow(ifname, sizeof(ifname)));
  16   if (!if_indextoname(1, ifname)) {
  17     assert(errno == ENXIO);
  18     printf("No network interfaces found.\n");
  19     return 0;
  20   }
  21   assert(strlen(ifname) + 1 <= __msan_test_shadow(ifname, sizeof(ifname)));
  22   return 0;
  23 }