Bug 773097 was caused by switching layer managers while in the middle of painting. We should set a bit when we start painting, and unset it after we're done, and then assert that the bit is false whenever we're changing layer managers.
Created attachment 651542 [details] [diff] [review] assert that we're not in the middle of a transaction when switching layer managers Haven't been able to test this yet, because I didn't have a debug build on this Windows machine, but I believe it would have caught the bug.
Assignee: nobody → joe
Attachment #651542 - Flags: review?(matt.woodrow)
This patch does, indeed, work.
Attachment #651542 - Flags: review?(matt.woodrow) → review+
Target Milestone: --- → mozilla17
Status: NEW → RESOLVED
Last Resolved: 6 years ago
Resolution: --- → FIXED
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