Build warning: { gfx/2d/RecordedEvent.cpp:885:12 [-Wswitch] enumeration value ‘OP_ARCTO’ not handled in switch } The switch statement in question is here: https://mxr.mozilla.org/mozilla-central/source/gfx/2d/RecordedEvent.cpp#885 and it handles every type of OpType *except* for ARCTO. It's been like this since this chunk (and the enum type) was added, in this cset: https://hg.mozilla.org/mozilla-central/rev/ed2e2da7d098 It actually looks like ARCTO is completely unused right now, as shown by this MXR search: https://mxr.mozilla.org/mozilla-central/search?string=OP_ARCTO All of the other enum values have corresponding functions in PathRecording.cpp (e.g. PathBuilderRecording::MoveTo), but there's no such function for ARCTO. I'm guessing OP_ARCTO was just cruft in the patch that added it, and it should just be dropped.

(note: For some reason, I've received no bugmail for this bug, in the ~10 minutes since I filed it, though I have gotten bugmail for another bug that I filed afterwards. I wonder if I've hit a b.m.o bug of some sort)

(In reply to Daniel Holbert [:dholbert] from comment #2) > (note: For some reason, I've received no bugmail for this bug, in the ~10 > minutes since I filed it (filed bug 839277 on that; it seems to be fixed now)