bug#19133: closed (Re: bug#19133: 25.0.50; Crash in clear-image-cache)

[Magnus Henoch]

Found the crucial difference: the crash happens if you create an image
using data from a string, as opposed to from a file.  This little
function reliably causes Emacs to crash, given any PNG or JPEG file.
(It cannot determine the type of PBM files, and XPM and SVG files don't
make Emacs crash.)

  (defun my-crash-emacs (image-file)
    (interactive "fImage file: ")
    (insert-image (create-image
                   (with-temp-buffer
                     (set-buffer-multibyte nil)
                     (insert-file-literally image-file)
                     (buffer-string))
                   nil t))
    (when (yes-or-no-p "Clear image cache? ")
      (clear-image-cache)))

Regards,
Magnus