[wp-trac] [WordPress Trac] #3076: Imageantialias doesn't support PNG. Needs either an implementation or test to skip PNG

[WordPress Trac]

#3076: Imageantialias doesn't support PNG. Needs either an implementation or test
to skip PNG
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 Reporter:  drmike          |       Owner:  anonymous
     Type:  defect          |      Status:  new      
 Priority:  normal          |   Milestone:           
Component:  Administration  |     Version:           
 Severity:  normal          |    Keywords:           
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 From the [http://trac.mu.wordpress.org/ticket/115 WPMU trac] but
 resolution was to bring it over here.  Donncha says this is an issue
 stemming out of the WP core.

 You're going to have to forgive me on this one. I know little about GD and
 how php generates image files. :)

 Per this thread in the forum:

 http://mu.wordpress.org/forums/topic.php?id=1652

 I'm getting that error when I try to upload a *.png file. I gather that
 that function 'imageantialias' has some issue with *.PNGs but there
 appears not be any any error check for them in that function before it
 hits that line.

 I do know that if it skips lines 867-8 of the WPMU file wp-admin/admin-
 functions.php (ie I comment it out), it uploads fine but a thumbnail is
 not generated. That might explain the occasional "No thumbnail" and the
 line is crossed out issue we get on occasion over on the WP.com forums. I
 don't remember anyone ever mentioning what file type they are trying to
 use when they get that error. (And we all know how hard it is to drag
 details out of folks.)

 Is this a defect? Sounds like we need to do some file type checking.

 Hope this helps, -drmike

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Ticket URL: <http://trac.wordpress.org/ticket/3076>
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