866665 - Threading assertions with VLC plugin

Status: RESOLVED WONTFIX

(Core Graveyard :: Plug-ins, defect, P3)

Description

[Jesse Ruderman]

Attachment: testcase (must be local)

###!!! ASSERTION: Received "nonqueued" message 295 during a synchronous IPC message for window 1508064 ("MozillaWindowClass"), sending it to DefWindowProc instead of the normal window procedure.: 'Error', file e:/builds/moz2_slave/m-cen-w32-d-000000000000000000/build/ipc/glue/WindowsMessageLoop.cpp, line 297

###!!! ASSERTION: Should be on the plugin's main thread!: 'IsPluginThread()', file e:\builds\moz2_slave\m-cen-w32-d-000000000000000000\build\obj-firefox\dist\include\mozilla/plugins/PluginMessageUtils.h, line 214


VLC Web Plugin:

    File: npvlc.dll
    Path: C:\Program Files (x86)\VideoLAN\VLC\npvlc.dll
    Version: 2.0.2.0
    State: Enabled
    VLC media player Web Plugin 2.0.2

Comment 1

[Jesse Ruderman]

Attachment: debug spew

Comment 2

[Benjamin Smedberg]

295 == 0x127 == WM_CHANGEUISTATE

Comment 3

[Jim Mathies [:jimm]]

(In reply to Benjamin Smedberg  [:bsmedberg] from comment #2)
> 295 == 0x127 == WM_CHANGEUISTATE

Looks like an easy message to defer.

http://msdn.microsoft.com/en-us/library/windows/desktop/ms646342%28v=vs.85%29.aspx

Comment 4

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

I'm marking this bug as WONTFIX per bug #1269807.

For more information see - https://blog.mozilla.org/futurereleases/2015/10/08/npapi-plugins-in-firefox/