* * calling `fdopen_tempfile()` to get a `FILE` pointer for the
* open file and writing to the file using stdio.
*
+ * Note that the file descriptor returned by create_tempfile()
+ * is marked O_CLOEXEC, so the new contents must be written by
+ * the current process, not any spawned one.
+ *
* When finished writing, the caller can:
*
* * Close the file descriptor and remove the temporary file by