swift

c00de608 - [CodeCompletion] Fix a crash when completing typealiases for protocol conformance (#3120)

[CodeCompletion] Fix a crash when completing typealiases for protocol conformance (#3120) The index may be at the end of the ArrayRef of chunks if the completion ends with a simple parameter with no type annotation. Check that the index is in-bounds before adding text. rdar://problem/26273906