Ryan Macnak
a9335cfa23
This will make GN notice conflicting copy_tree destinations. It may also fix a race when two copy_tree's with a common parent directory create that parent directory. Change-Id: I1783ea170f0390d4026123ed43c00cd15eb0b1c5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/508241 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Samuel Rawlins <srawlins@google.com>