STR: 1. Load attached testcase in a debug mozilla-central build. ACTUAL RESULTS: { ###!!! ABORT: aRelevantLinkVisited should only be set when we have a separate style: 'aRulesIfVisited || !aRelevantLinkVisited', file ../../../mozilla/layout/style/nsStyleContext.cpp, line 179 } See also bug 575675, filed on another instance of this abort firing for XUL content. (NOTE: The attached testcase is "testcase 2" from bug 641731. I just discovered this while starting to work on that bug.)

Comment on attachment 563184 [details] testcase 1 (requires that you've visited bug page for bug 641731) (note: the bug only reproduces if the link in the embedded SVG is visited. In the case of the initial testcase I attached, that link is bug 641731)

Here's a reduced testcase, whose link is to this bug page here. (so, it'll only repro if you've visited this bug page in your testing profile)

(In reply to Daniel Holbert [:dholbert] from comment #1) > (note: the bug only reproduces if the link in the embedded SVG is visited. Due to the above-quoted note, this bug will likely become WFM once we've fixed bug 641731 (completely ignoring visited status in SVG-as-an-image).

This is actually the same underlying problem as bug 575675. In particular, the preference stylesheet is not set up in SVG-as-image documents because mDocument->GetWindow() returns null in PresShell::SetPreferenceStyleRules. Then the reasoning in bug 575675 comment 9 follows.

(duping per bug 575675 comment 45, which suggests that we just remove the assertion & dupe all bugs on it failing to that bug)