// Get the path. If its empty, we can't do anything to find it.
const char *PathStr = getenv("PATH");
- if (PathStr == 0)
+ if (!PathStr)
return "";
// Now we have a colon separated list of directories to search; try them.
}
static bool RedirectIO(const StringRef *Path, int FD, std::string* ErrMsg) {
- if (Path == 0) // Noop
+ if (!Path) // Noop
return false;
std::string File;
if (Path->empty())
#ifdef HAVE_POSIX_SPAWN
static bool RedirectIO_PS(const std::string *Path, int FD, std::string *ErrMsg,
posix_spawn_file_actions_t *FileActions) {
- if (Path == 0) // Noop
+ if (!Path) // Noop
return false;
const char *File;
if (Path->empty())
#ifdef HAVE_POSIX_SPAWN
if (memoryLimit == 0) {
posix_spawn_file_actions_t FileActionsStore;
- posix_spawn_file_actions_t *FileActions = 0;
+ posix_spawn_file_actions_t *FileActions = nullptr;
// If we call posix_spawn_file_actions_addopen we have to make sure the
// c strings we pass to it stay alive until the call to posix_spawn,
std::string RedirectsStorage[3];
if (redirects) {
- std::string *RedirectsStr[3] = {0, 0, 0};
+ std::string *RedirectsStr[3] = {nullptr, nullptr, nullptr};
for (int I = 0; I < 3; ++I) {
if (redirects[I]) {
RedirectsStorage[I] = *redirects[I];
if (RedirectIO_PS(RedirectsStr[0], 0, ErrMsg, FileActions) ||
RedirectIO_PS(RedirectsStr[1], 1, ErrMsg, FileActions))
return false;
- if (redirects[1] == 0 || redirects[2] == 0 ||
+ if (redirects[1] == nullptr || redirects[2] == nullptr ||
*redirects[1] != *redirects[2]) {
// Just redirect stderr
if (RedirectIO_PS(RedirectsStr[2], 2, ErrMsg, FileActions))
// Explicitly initialized to prevent what appears to be a valgrind false
// positive.
pid_t PID = 0;
- int Err = posix_spawn(&PID, Program.str().c_str(), FileActions, /*attrp*/0,
- const_cast<char **>(args), const_cast<char **>(envp));
+ int Err = posix_spawn(&PID, Program.str().c_str(), FileActions,
+ /*attrp*/nullptr, const_cast<char **>(args),
+ const_cast<char **>(envp));
if (FileActions)
posix_spawn_file_actions_destroy(FileActions);
// Execute!
std::string PathStr = Program;
- if (envp != 0)
+ if (envp != nullptr)
execve(PathStr.c_str(),
const_cast<char **>(args),
const_cast<char **>(envp));
// Turn off the alarm and restore the signal handler
alarm(0);
- sigaction(SIGALRM, &Old, 0);
+ sigaction(SIGALRM, &Old, nullptr);
// Wait for child to die
if (wait(&status) != ChildPid)
// We exited normally without timeout, so turn off the timer.
if (SecondsToWait && !WaitUntilTerminates) {
alarm(0);
- sigaction(SIGALRM, &Old, 0);
+ sigaction(SIGALRM, &Old, nullptr);
}
// Return the proper exit status. Detect error conditions