cee7000c1a
Disable for tests that use dart:io's exit. Add missing thread joins to cc tests. TEST=tsan Bug: https://github.com/dart-lang/sdk/issues/41811 Change-Id: Id4e1a468a986c886fb5ae9e9677b4d8d0281cc79 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/468880 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>