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// RUN: %clangxx_asan -g -Wno-deprecated-declarations %s -o %t
// RUN: %env_asan_opts=exitcode=42 %run %t | FileCheck %s
// Android doesn't have spawn.h or posix_spawn.
// UNSUPPORTED: android
// 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__)
#include <TargetConditionals.h>
#endif
#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;
}
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