Maybe I should have marked it as FF core problem :-( I have found several bugzilla entries after searching for SetSpec. The following two stood out. bug 359901 nsSimpleURI::SetSpec misidentifies nsIURI::prePath and ::path for HTTP URLs bug 91908 nsStdURL::SetSpec() Assertion when reading Messages with image/news attatchments There is something fishy with this SetSpec() code. I just noticed invalid URIs are passed before the error occurs in Bug 1484449 TEST-UNEXPECTED-FAIL | /builds/worker/workspace/build/tests/mozmill/pref-window/test-font-chooser.js but not sure if SetSpec() issues are related to Bug 1484449.
Bug 1539997 Comment 6 Edit History
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Maybe I should have marked it as FF core problem :-( I have found several bugzilla entries after searching for SetSpec. The following two stood out. bug 359901 nsSimpleURI::SetSpec misidentifies nsIURI::prePath and ::path for HTTP URLs bug 91908 nsStdURL::SetSpec() Assertion when reading Messages with image/news attatchments There is something fishy with this SetSpec() code. I just noticed invalid URIs are passed before the error occurs in Bug 1484449 TEST-UNEXPECTED-FAIL | /builds/worker/workspace/build/tests/mozmill/pref-window/test-font-chooser.js but not sure if SetSpec() issues are related to Bug 1484449.