[RFA] Ensure result of make_cleanup is never NULL.

[Pedro Alves]

On 04/18/2012 02:05 AM, Joel Brobecker wrote:

>> btw, I thought about making cleanup_sentinel const here, for a bit of
>> extra robustness.
> 
> Sounds like a good idea. And also, I was wondering if it made sense
> to initialize the sentinel struct to `{ 0 }', even if we do not
> actually access the contents of that specific struct instance?


Not really necessary.  C does that implicitly to all uninitialized global variables.

-- 
Pedro Alves