--- /dev/null
+// RUN: %clangxx_asan -g %stdcxx11 -Wno-deprecated-declarations %s -o %t
+// RUN: %env_asan_opts=exitcode=42 %t | FileCheck %s
+
+// CHECK: got expected 42 exit code
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef _WIN32
+#include <windows.h>
+
+int spawn_child(char **argv) {
+ // Set an environment variable to tell the child process to interrupt
+ // itself.
+ if (!SetEnvironmentVariableW(L"CRASH_FOR_TEST", L"1")) {
+ printf("SetEnvironmentVariableW failed (0x%8lx).\n", GetLastError());
+ fflush(stdout);
+ exit(1);
+ }
+
+ STARTUPINFOW si;
+ memset(&si, 0, sizeof(si));
+ si.cb = sizeof(si);
+
+ PROCESS_INFORMATION pi;
+ memset(&pi, 0, sizeof(pi));
+
+ if (!CreateProcessW(nullptr, // No module name (use command line)
+ GetCommandLineW(), // Command line
+ nullptr, // Process handle not inheritable
+ nullptr, // Thread handle not inheritable
+ TRUE, // Set handle inheritance to TRUE
+ 0, // No flags
+ nullptr, // Use parent's environment block
+ nullptr, // Use parent's starting directory
+ &si, &pi)) {
+ printf("CreateProcess failed (0x%08lx).\n", GetLastError());
+ fflush(stdout);
+ exit(1);
+ }
+
+ WaitForSingleObject(pi.hProcess, INFINITE);
+
+ DWORD exit_code;
+ if (!GetExitCodeProcess(pi.hProcess, &exit_code)) {
+ printf("GetExitCodeProcess failed (0x%08lx).\n", GetLastError());
+ fflush(stdout);
+ exit(1);
+ }
+
+ CloseHandle(pi.hProcess);
+ CloseHandle(pi.hThread);
+
+ return exit_code;
+}
+#else
+#include <spawn.h>
+#include <errno.h>
+#include <sys/wait.h>
+
+#if defined(__APPLE__) && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
+#define USE_NSGETENVIRON 1
+#else
+#define USE_NSGETENVIRON 0
+#endif
+
+#if !USE_NSGETENVIRON
+extern char **environ;
+#else
+#include <crt_externs.h> // _NSGetEnviron
+#endif
+
+int spawn_child(char **argv) {
+ setenv("CRASH_FOR_TEST", "1", 1);
+
+#if !USE_NSGETENVIRON
+ char **envp = environ;
+#else
+ char **envp = *_NSGetEnviron();
+#endif
+
+ pid_t pid;
+ int err = posix_spawn(&pid, argv[0], nullptr, nullptr, argv, envp);
+ if (err) {
+ printf("posix_spawn failed: %d\n", err);
+ fflush(stdout);
+ exit(1);
+ }
+
+ // Wait until the child exits.
+ int status;
+ pid_t wait_result_pid;
+ do {
+ wait_result_pid = waitpid(pid, &status, 0);
+ } while (wait_result_pid == -1 && errno == EINTR);
+
+ if (wait_result_pid != pid || !WIFEXITED(status)) {
+ printf("error in waitpid\n");
+ fflush(stdout);
+ exit(1);
+ }
+
+ // Return the exit status.
+ return WEXITSTATUS(status);
+}
+#endif
+
+int main(int argc, char **argv) {
+ int r = 0;
+ if (getenv("CRASH_FOR_TEST")) {
+ // Generate an asan report to test ASAN_OPTIONS=exitcode=42
+ int *p = new int;
+ delete p;
+ r = *p;
+ } else {
+ int exit_code = spawn_child(argv);
+ if (exit_code == 42) {
+ printf("got expected 42 exit code\n");
+ fflush(stdout);
+ }
+ }
+ return r;
+}