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
13int main(int argc, char *argv[]) {
14 char ifname[IF_NAMESIZE + 1];
15 assert(0 == __msan_test_shadow(ifname, sizeof(ifname)));
16 if (!if_indextoname(ifindex: 1, ifname: ifname)) {
17 assert(errno == ENXIO);
18 printf(format: "No network interfaces found.\n");
19 return 0;
20 }
21 assert(strlen(ifname) + 1 <= __msan_test_shadow(ifname, sizeof(ifname)));
22 return 0;
23}
24

source code of compiler-rt/test/msan/if_indextoname.cpp