ioctl.cc revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1// RUN: %clangxx_asan -O0 -g %s -o %t && ASAN_OPTIONS=handle_ioctl=1 not %run %t 2>&1 | FileCheck %s
2// RUN: %clangxx_asan -O3 -g %s -o %t && ASAN_OPTIONS=handle_ioctl=1 not %run %t 2>&1 | FileCheck %s
3
4// RUN: %clangxx_asan -O0 -g %s -o %t && %run %t
5// RUN: %clangxx_asan -O3 -g %s -o %t && %run %t
6
7#include <assert.h>
8#include <stdlib.h>
9#include <sys/ioctl.h>
10#include <sys/socket.h>
11#include <unistd.h>
12
13int main(int argc, char **argv) {
14  int fd = socket(AF_INET, SOCK_DGRAM, 0);
15
16  int nonblock;
17  int res = ioctl(fd, FIONBIO, &nonblock + 1);
18  // CHECK: AddressSanitizer: stack-buffer-overflow
19  // CHECK: READ of size 4 at
20  // CHECK: {{#.* in main .*ioctl.cc:}}[[@LINE-3]]
21  assert(res == 0);
22  close(fd);
23  return 0;
24}
25