[PATCH] D23466: ADT: Remove UB in ilist (and use a circular linked list)

[Duncan P. N. Exon Smith via llvm-commits]

dexonsmith added a reviewer: hans.
dexonsmith updated this revision to Diff 67964.
dexonsmith added a comment.

Updated to address comments from Justin and Mehdi, but I'll wait to commit until Monday.  Hans volunteered to run tests on Windows pre-commit.  r278532 (up to r278539) somehow exposed a number of bugs in the backends (see r278572, r278577, and r278587), and I suspect this could expose others.


https://reviews.llvm.org/D23466

Files:
  include/llvm/ADT/ilist.h
  include/llvm/ADT/ilist_node.h
  unittests/ADT/ilistTest.cpp

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