1357231 - 1,181,500 instances of "Cannot set transparency mode on top-level windows." emitted from widget/windows/nsWindow.cpp during windows7-32-vm debug testing

Status: RESOLVED DUPLICATE of bug 1356575

(Core :: Widget, defect)

Description

[Eric Rahm [:erahm]]

> 1181524 WARNING: Cannot set transparency mode on top-level windows.: file widget/windows/nsWindow.cpp, line 3057

This warning [1] shows up in the following test suites:

>  27215 - W3C Web Platform Tests e10s 8
>  21557 - W3C Web Platform Tests 8
>  19407 - W3C Web Platform Tests e10s 9
>  19206 - W3C Web Platform Tests e10s 1
>  17280 - Mochitest e10s Browser Chrome bc4
>  17274 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-4 bc4
>  17150 - test-windows7-32-vm/debug-web-platform-tests-e10s-11 wpt11
>  16986 - W3C Web Platform Tests e10s 2
>  16383 - test-windows7-32-vm/debug-web-platform-tests-11 wpt11
>  15953 - test-windows7-32-vm/debug-web-platform-tests-e10s-10 wpt10
>  15514 - W3C Web Platform Tests 9
>  15170 - W3C Web Platform Tests 1
>  15072 - Mochitest e10s 3
>  14971 - W3C Web Platform Tests e10s 5
>  14872 - W3C Web Platform Tests e10s 7
>  14392 - Mochitest e10s Browser Chrome bc5
>  14386 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-5 bc5
>  14306 - test-windows7-32-vm/debug-mochitest-e10s-3 3
>  14105 - Mochitest Browser Chrome bc6
>  13949 - test-windows7-32-vm/debug-web-platform-tests-e10s-6 wpt6
>  13761 - test-windows7-32-vm/debug-mochitest-browser-chrome-6 bc6
>  13717 - test-windows7-32-vm/debug-web-platform-tests-10 wpt10
>  13685 - W3C Web Platform Tests e10s 4
>  13497 - W3C Web Platform Tests 2
>  13429 - test-windows7-32-vm/debug-mochitest-3 3
>  13332 - Mochitest 3
>  12989 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-7 bc7
>  12973 - Mochitest e10s Browser Chrome bc7
>  12678 - W3C Web Platform Tests 7
>  12666 - W3C Web Platform Tests 5
>  12361 - W3C Web Platform Tests e10s 6
>  12292 - Mochitest e10s Browser Chrome bc6
>  12205 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-6 bc6
>  11874 - Mochitest e10s Browser Chrome bc2
>  11808 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-2 bc2
>  11391 - test-windows7-32-vm/debug-web-platform-tests-6 wpt6
>  11275 - Mochitest e10s Browser Chrome bc1
>  11248 - test-windows7-32-vm/debug-web-platform-tests-e10s-3 wpt3
>  11184 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-1 bc1
>  11049 - W3C Web Platform Tests 4
>  10895 - test-windows7-32-vm/debug-web-platform-tests-e10s-7 wpt7
>  10738 - Mochitest Browser Chrome bc2
>  10737 - test-windows7-32-vm/debug-mochitest-browser-chrome-2 bc2
>  10733 - test-windows7-32-vm/debug-mochitest-browser-chrome-4 bc4
>  10726 - Mochitest Browser Chrome bc4
>  10701 - test-windows7-32-vm/debug-mochitest-browser-chrome-1 bc1
>  10678 - Mochitest Browser Chrome bc1
>  10562 - test-windows7-32-vm/debug-web-platform-tests-9 wpt9
>  10302 - Mochitest e10s Browser Chrome bc3
>  10238 - test-windows7-32-vm/debug-mochitest-browser-chrome-e10s-3 bc3
>  10041 - Mochitest e10s 5
>   9884 - test-windows7-32-vm/debug-mochitest-browser-chrome-7 bc7
>   9873 - Mochitest Browser Chrome bc3
>   9813 - test-windows7-32-vm/debug-mochitest-browser-chrome-3 bc3
>   9780 - W3C Web Platform Tests 6
>   9735 - test-windows7-32-vm/debug-web-platform-tests-e10s-2 wpt2
>   9730 - Mochitest Browser Chrome bc7
>   9681 - test-windows7-32-vm/debug-mochitest-e10s-5 5
>   9458 - test-windows7-32-vm/debug-web-platform-tests-e10s-5 wpt5
>   9420 - W3C Web Platform Tests e10s 3
>   9360 - test-windows7-32-vm/debug-web-platform-tests-3 wpt3
>   9222 - test-windows7-32-vm/debug-web-platform-tests-5 wpt5
>   9189 - test-windows7-32-vm/debug-web-platform-tests-7 wpt7
>   9130 - test-windows7-32-vm/debug-web-platform-tests-e10s-9 wpt9
>   8833 - Mochitest 1
>   8786 - Mochitest Browser Chrome bc5
>   8739 - test-windows7-32-vm/debug-mochitest-browser-chrome-5 bc5
>   8515 - test-windows7-32-vm/debug-mochitest-1 1
>   8319 - test-windows7-32-vm/debug-web-platform-tests-e10s-12 wpt12
>   8223 - test-windows7-32-vm/debug-web-platform-tests-e10s-1 wpt1
>   8157 - Mochitest e10s 1
>   8150 - W3C Web Platform Tests e10s 10
>   7984 - test-windows7-32-vm/debug-web-platform-tests-2 wpt2
>   7836 - test-windows7-32-vm/debug-mochitest-e10s-1 1
>   7722 - W3C Web Platform Tests 3
>   7707 - Mochitest 5
>   7562 - Mochitest e10s 4
>   7538 - test-windows7-32-vm/debug-mochitest-5 5
>   7489 - Mochitest e10s 2
>   7242 - test-windows7-32-vm/debug-mochitest-e10s-4 4
>   7212 - test-windows7-32-vm/debug-mochitest-e10s-2 2
>   7061 - test-windows7-32-vm/debug-web-platform-tests-e10s-8 wpt8
>   7044 - Mochitest 4
>   7026 - test-windows7-32-vm/debug-web-platform-tests-1 wpt1
>   6968 - Mochitest 2
>   6925 - test-windows7-32-vm/debug-web-platform-tests-12 wpt12
>   6912 - test-windows7-32-vm/debug-web-platform-tests-e10s-4 wpt4
>   6856 - test-windows7-32-vm/debug-mochitest-4 4
>   6799 - test-windows7-32-vm/debug-mochitest-2 2
>   6121 - W3C Web Platform Tests 10
>   5823 - test-windows7-32-vm/debug-web-platform-tests-4 wpt4
>   5718 - test-windows7-32-vm/debug-web-platform-tests-8 wpt8
>   5173 - Mochitest DevTools Browser Chrome dt2
>   5145 - test-windows7-32-vm/debug-mochitest-devtools-chrome-2 dt2
>   5096 - Mochitest DevTools Browser Chrome dt4
>   5077 - test-windows7-32-vm/debug-mochitest-devtools-chrome-4 dt4
>   4516 - Mochitest e10s DevTools Browser Chrome dt5
>   4489 - test-windows7-32-vm/debug-mochitest-devtools-chrome-5 dt5
>   4413 - Mochitest DevTools Browser Chrome dt5
>   4399 - Mochitest DevTools Browser Chrome dt1
>   4359 - test-windows7-32-vm/debug-mochitest-devtools-chrome-1 dt1
>   4319 - Mochitest e10s DevTools Browser Chrome dt7
>   4289 - Mochitest e10s DevTools Browser Chrome dt8
>   4188 - Mochitest DevTools Browser Chrome dt8
>   4171 - Mochitest DevTools Browser Chrome dt6
>   4154 - test-windows7-32-vm/debug-mochitest-devtools-chrome-6 dt6
>   4137 - test-windows7-32-vm/debug-mochitest-devtools-chrome-8 dt8
>   4113 - test-windows7-32-vm/debug-mochitest-jetpack JP
>   4091 - Mochitest Jetpack JP
>   4007 - W3C Web Platform Reftests e10s Wr-e10s
>   3882 - Mochitest e10s DevTools Browser Chrome dt2
>   3870 - Mochitest e10s DevTools Browser Chrome dt1
>   3700 - W3C Web Platform Reftests Wr
>   3656 - test-windows7-32-vm/debug-web-platform-tests-reftests Wr
>   3645 - test-windows7-32-vm/debug-mochitest-devtools-chrome-3 dt3
>   3607 - Mochitest e10s DevTools Browser Chrome dt4
>   3599 - Mochitest DevTools Browser Chrome dt3
>   2989 - Mochitest Media mda
>   2986 - Mochitest e10s DevTools Browser Chrome dt3
>   2789 - test-windows7-32-vm/debug-mochitest-devtools-chrome-7 dt7
>   2787 - Mochitest e10s WebGL gl1
>   2720 - Mochitest e10s WebGL gl2
>   2709 - Mochitest DevTools Browser Chrome dt7
>   2665 - Mochitest WebGL gl1
>   2634 - Mochitest e10s WebGL gl3
>   2618 - Mochitest WebGL gl2
>   2617 - Mochitest WebGL gl3
>   2568 - Mochitest e10s DevTools Browser Chrome dt6
>   1383 - test-windows7-32-vm/debug-mochitest-media-e10s-1 mda1
>   1367 - test-windows7-32-vm/debug-mochitest-media-1 mda1
>   1248 - test-windows7-32-vm/debug-mochitest-media-e10s-2 mda2
>   1247 - Mochitest a11y a11y
>   1243 - test-windows7-32-vm/debug-mochitest-a11y a11y
>   1213 - test-windows7-32-vm/debug-mochitest-media-2 mda2
>   1083 - test-windows7-32-vm/debug-mochitest-media-3 mda3
>   1079 - test-windows7-32-vm/debug-mochitest-media-e10s-3 mda3
>    370 - Mochitest e10s GPU gpu
>    355 - Mochitest GPU gpu
>     43 - Crashtest e10s C
>     35 - test-windows7-32-vm/debug-crashtest C
>     34 - Crashtest C
>     19 - Reftest Unaccelerated e10s Ru1
>     17 - JSReftest e10s J1
>     17 - Reftest e10s R-e10s1
>     17 - Reftest GPU e10s Rg
>     16 - Reftest Unaccelerated e10s Ru2
>     16 - JSReftest e10s J2
>     15 - JSReftest J2
>     15 - JSReftest J1
>     15 - Reftest R1
>     15 - Reftest R2
>     15 - Reftest Unaccelerated Ru1
>     15 - Reftest Unaccelerated Ru2

It shows up in 40590 tests. A few of the most prevalent:

>  14587 -        Shutdown
>  14526 - [e10s] Shutdown
>   2789 -        jetpack-package/addon-sdk/source/test/test-simple-prefs.js.testUnloadOfDynamicPrefGeneration
>   1484 -        layout/base/tests/test_reftests_with_caret.html
>   1463 - [e10s] layout/base/tests/test_reftests_with_caret.html
>   1224 -        /html/rendering/replaced-elements/svg-embedded-sizing/svg-in-iframe-fixed.html
>   1221 -        /html/rendering/replaced-elements/svg-embedded-sizing/svg-in-iframe-auto.html
>   1219 - [e10s] toolkit/components/passwordmgr/test/browser/browser_capture_doorhanger.js
>   1219 -        /html/rendering/replaced-elements/svg-embedded-sizing/svg-in-iframe-percentage.html
>   1184 - [e10s] browser/base/content/test/general/browser_bug553455.js

[1] https://hg.mozilla.org/mozilla-central/annotate/cac374fb0de1/widget/windows/nsWindow.cpp#l3057

Comment 1

[Eric Rahm [:erahm]]

Mike, it looks like this is a regression from bug 1344839. At over 1 million warnings this is by far the most verbose warning during testing.

Comment 2

[Mike Conley (:mconley) (:⚙️)]

Patch up in bug 1356575. :) Sorry for the noise.