http://tinderbox.mozilla.org/showlog.cgi?log=SeaMonkey/1328632854.1328639066.12467.gz&fulltext=1 WINNT 5.2 comm-central-trunk debug test mochitest-other on 2012/02/07 08:40:54 { TEST-INFO | chrome://mochitests/content/browser/suite/browser/test/browser_pluginnotification.js | Console message: [JavaScript Warning: "function get_test_plugin does not always return a value" {file: "chrome://mochitests/content/browser/suite/browser/test/browser_pluginnotification.js" line: 14}] } SM simply copies FF code, which is missing an ending "return <something>;".

https://tbpl.mozilla.org/php/getParsedLog.php?id=9384818&tree=Firefox&full=1 Rev3 Fedora 12x64 mozilla-central debug test mochitest-other on 2012-02-16 04:30:20 PST for push 6989376471f7 { TEST-INFO | chrome://mochitests/content/browser/browser/base/content/test/browser_pluginnotification.js | Console message: [JavaScript Warning: "function get_test_plugin does not always return a value" {file: "chrome://mochitests/content/browser/browser/base/content/test/browser_pluginnotification.js" line: 7}] }

Not seen anymore.

https://tbpl.mozilla.org/php/getParsedLog.php?id=39515476&tree=Mozilla-Central Ubuntu VM 12.04 x64 mozilla-central debug test mochitest-browser-chrome-1 on 2014-05-12 14:15:56 PDT for push b1c9fcb5450b { 14:32:48 INFO - TEST-START | chrome://mochitests/content/browser/browser/base/content/test/plugins/browser_pluginnotification.js [...] 14:33:12 INFO - INFO TEST-END | chrome://mochitests/content/browser/browser/base/content/test/plugins/browser_pluginnotification.js | finished in 23667ms } No more "get_test_plugin" warning :-) (By code inspection,) Bug 776208 fixed this for Firefox. Then bug 773761 fixed it for SeaMonkey. V.Fixed.