[libGD] #52 [Comment added] Reading GIF images is not thread safe.

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Newsgroups php.gd.bugs
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The following task has a new comment added:

FS#52 - Reading GIF images is not thread safe.
User who did this - Pierre Joye (Pierre)

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This change is part of another fix (see tests/gif/ for the current tests about these changes).  That's what we have in 2.0.34. The image in #60 (as well as the tests) works in 2.0.34 as well as all other tests. 

The problem appears in ReadImage on line 548, LWZReadByte returns invalid value, making an out of range read and write access of the im->open array. Do you see it as well?
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More information can be found at the following URL:
http://bugs.libgd.org/?do=details&task_id=52#comment152

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