1// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
2// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
3
4// UNSUPPORTED: darwin, aarch64
5
6#include <assert.h>
7#include <sys/wait.h>
8#include <unistd.h>
9#include <signal.h>
10
11int main(int argc, char **argv) {
12 pid_t pid = fork();
13 if (pid) { // parent
14 int x[3];
15 int *status = x + argc * 3;
16 int res;
17
18 siginfo_t *si = (siginfo_t*)(x + argc * 3);
19 res = waitid(idtype: P_ALL, id: 0, infop: si, WEXITED | WNOHANG);
20 // CHECK: stack-buffer-overflow
21 // CHECK: {{WRITE of size .* at 0x.* thread T0}}
22 // CHECK: {{in .*waitid}}
23 // CHECK: {{in main .*waitid.cpp:}}
24 // CHECK: is located in stack of thread T0 at offset
25 // CHECK: {{in main}}
26 return res != -1;
27 }
28 // child
29 return 0;
30}
31

source code of compiler-rt/test/asan/TestCases/Posix/waitid.cpp