forked from OSchip/llvm-project
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
|
|
// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
|
|
|
|
// RUN: %clangxx_msan -DPOSITIVE -O0 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
|
|
// RUN: %clangxx_msan -DPOSITIVE -O3 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
|
|
|
|
// Reports different report (not analyzed)
|
|
// XFAIL: netbsd
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <net/if.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char **argv) {
|
|
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
|
|
|
|
struct ifreq ifreqs[20];
|
|
struct ifconf ifc;
|
|
ifc.ifc_ifcu.ifcu_req = ifreqs;
|
|
#ifndef POSITIVE
|
|
ifc.ifc_len = sizeof(ifreqs);
|
|
#endif
|
|
int res = ioctl(fd, SIOCGIFCONF, (void *)&ifc);
|
|
// CHECK: Uninitialized bytes in ioctl{{.*}} at offset 0 inside [0x{{.*}}, 4)
|
|
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
|
|
// CHECK: #{{.*}} in main {{.*}}ioctl_custom.cc:[[@LINE-3]]
|
|
assert(res == 0);
|
|
for (int i = 0; i < ifc.ifc_len / sizeof(*ifc.ifc_ifcu.ifcu_req); ++i)
|
|
printf("%d %zu %s\n", i, strlen(ifreqs[i].ifr_name), ifreqs[i].ifr_name);
|
|
return 0;
|
|
}
|