1// Test that ASan doesn't raise false alarm when getsockname and getpeername
2// are called with addrlen=nullptr;
3//
4// RUN: %clangxx %s -o %t && %run %t 2>&1
5
6#include <assert.h>
7#include <errno.h>
8#include <netinet/in.h>
9#include <sys/socket.h>
10
11int main() {
12 const int fd = socket(AF_INET, SOCK_DGRAM, protocol: 0);
13 assert(fd >= 0);
14
15 const sockaddr_in sin = {
16 .sin_family = AF_INET,
17 .sin_port = htons(hostshort: 1234),
18 .sin_addr =
19 {
20 .s_addr = htonl(INADDR_LOOPBACK),
21 },
22 };
23 assert(connect(fd, reinterpret_cast<const sockaddr *>(&sin), sizeof(sin)) ==
24 0);
25
26 errno = 0;
27 assert(getsockname(fd, nullptr, nullptr) == -1);
28 assert(errno == EFAULT);
29
30 errno = 0;
31 assert(getpeername(fd, nullptr, nullptr) == -1);
32 assert(errno == EFAULT);
33
34 return 0;
35}
36

source code of compiler-rt/test/sanitizer_common/TestCases/Linux/get_sock_peer_name.cpp