1 // RUN: %clangxx_asan -O0 -g %s -o %t && %env_asan_opts=handle_ioctl=1 not %run %t 2>&1 | FileCheck %s
2 // RUN: %clangxx_asan -O3 -g %s -o %t && %env_asan_opts=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 
13 #if defined(__sun__) && defined(__svr4__)
14 #include <sys/filio.h>
15 #endif
16 
main(int argc,char ** argv)17 int main(int argc, char **argv) {
18   int fd = socket(AF_INET, SOCK_DGRAM, 0);
19 
20   int nonblock;
21   int res = ioctl(fd, FIONBIO, &nonblock + 1);
22   // CHECK: AddressSanitizer: stack-buffer-overflow
23   // CHECK: READ of size 4 at
24   // CHECK: {{#.* in main .*ioctl.cpp:}}[[@LINE-3]]
25   assert(res == 0);
26   close(fd);
27   return 0;
28 }
29