bug#25649: 26.0.50; Decryption of mail fails silently if tmp directory is full

[Lars Ingebrigtsen <larsi@gnus.org>]

Marco Wahl <marcowahlsoft@gmail.com> writes:

> Precondition:
>
> - Have temp directory 100% full.
>
> - Have an encrypted (for you) email.
>
> Action:
>
> - Trigger the decrypt of that email in gnus.
>
> Effect:
>
> - The mailtext is omitted.  It looks like the email has no content.
>
> Wish:
>
> - Error indication.

Indeed.

I'm looking at this code, and there seems to be a bunch of error
reporting in place.  For instance:

(defun mm-possibly-verify-or-decrypt (parts ctl &optional from)
  (let ((type (car ctl))
	(subtype (cadr (split-string (car ctl) "/")))
	(mm-security-handle ctl) ;; (car CTL) is the type.

[...]

	  (if func
	      (setq parts (funcall func parts ctl))
	    (mm-set-handle-multipart-parameter
	     mm-security-handle 'gnus-details
	     (format "Unknown sign protocol (%s)" protocol))))))

[...]

    parts))

And mm-security-handle indeed has a file-related error message after
this.  But it's just discarded?  I mean, it's bound locally and then not
returned, so I think there's a thinko here somewhere...

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no