thumbnail creation fails silently

[tieguy]

When thumbnail creation fails, it fails silently, with no indication why it fails. That is a real pain in the ass if you're trying to debug. Frankly, I assumed for months that thumbnailing just wasn't implemented yet- it was only because I noticed that it does work on ma.tt that I even went back and tried to debug the situation.

I'm still not succeeding in actually getting the thumbnailing working, for what it is worth- extensive googling suggested I should install libgd, which I've now done, but no helpful errors from wordpress means I'm just back at square one in terms of figuring out why it is breaking.

There are no other directly pertinent bugs, but #7039 and #1952 mention instances of silent failure being a problem and #2794 has a (now bitrotted) patch creating an error reporting system.

[jacobsantos]

You don't need libgd, you need the GD PHP extension.

[jacobsantos]

Thumbnails work for me, sending to next release since issue seems to be an edge case.

[Denis-de-Bernardy]

we could add a message, yeah...

[Denis-de-Bernardy]

See #8754, #9717

[drgdc]

​http://core.trac.wordpress.org/ticket/12532
​http://core.trac.wordpress.org/ticket/8754

[helen]

Duplicate of #23127.