Function FailFromInternalError

tests/gtest/gtest-all.cc:7943–7962

This is called from a death test parent process to read a failure message from the death test child process and log it with the FATAL severity. On Windows, the message is read from a pipe handle. On other platforms, it is read from a file descriptor.

// severity. On Windows, the message is read from a pipe handle. On other
// platforms, it is read from a file descriptor.
static void FailFromInternalError(int fd) {
  Message error;
  char buffer[256];
  int num_read;

  do {
    while ((num_read = posix::Read(fd, buffer, 255)) > 0) {
      buffer[num_read] = '\0';
      error << buffer;
    }
  } while (num_read == -1 && errno == EINTR);

  if (num_read == 0) {
    GTEST_LOG_(FATAL) << error.GetString();
  } else {
    const int last_error = errno;
    GTEST_LOG_(FATAL) << "Error while reading death test internal: "
                      << GetLastErrnoDescription() << " [" << last_error << "]";
  }
}

// Death test constructor.  Increments the running death test count
// for the current test.