1// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
2// RUN: FileCheck %s < %t.out
3// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
4// RUN: FileCheck %s < %t.out
5
6#include <sys/types.h>
7#include <sys/socket.h>
8#include <netdb.h>
9#include <stdlib.h>
10
11volatile int z;
12
13int main(void) {
14 struct addrinfo *ai;
15 struct addrinfo hint;
16 int res = getaddrinfo(name: "localhost", NULL, NULL, pai: &ai);
17 if (ai) z = 1; // OK
18 res = getaddrinfo(name: "localhost", NULL, req: &hint, pai: &ai);
19 // CHECK: Uninitialized bytes in getaddrinfo at offset 0 inside [0x{{.*}}, 48)
20 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
21 // CHECK: #0 {{.*}} in main {{.*}}getaddrinfo-positive.cpp:[[@LINE-3]]
22 return 0;
23}
24

source code of compiler-rt/test/msan/getaddrinfo-positive.cpp