[tor-bugs] #3755 [Torbutton]: memory leak

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#3755: memory leak
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 Reporter:  arno       |          Owner:  mikeperry
     Type:  defect     |         Status:  new      
 Priority:  normal     |      Milestone:           
Component:  Torbutton  |        Version:           
 Keywords:             |         Parent:           
   Points:             |   Actualpoints:           
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 Hi,
 I discovered a memory leak with torbutton.
 This can be checked with a debug build of Firefox. Alternatively, an
 assertion is triggered in cairo library
 firefox: /tmp/buildd/cairo-1.10.2/src/cairo-hash.c:196:
 _cairo_hash_table_destroy: Assertion `hash_table->live_entries == 0'
 failed.
 It looks like a window object is not released.

 I could track it to torbutton_wrap_search_service.
 I looks like setting origEngineObj.getSubmission function causes the leak.
 The fix would be to get the object back at unload, and set getSubmission
 method function to null.
 I won't provide a patch right now because I did not clearly understood if
 the getSubmission replacement is done once or for each window.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3755>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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