Adam Barth dda744eccc Fix attaching a dirty, detached SemanticsNode (#4855)
Previously we triggered an assert.

Fixes #4850
2016-07-08 13:28:42 -07:00
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2016-06-20 21:04:45 -07:00
2016-06-14 15:19:14 -07:00
2016-05-26 09:49:09 -07:00