https://issues.dlang.org/show_bug.cgi?id=23090
--- Comment #1 from Dlang Bot <[email protected]> --- @pbackus updated dlang/phobos pull request #8574 "[allocator/region] Issue 23090 - Don't use NullAllocator as a sentinel type" mentioning this issue: - Region: don't use NullAllocator as a sentinel Region will now always assume that its ParentAllocator is a real allocator, and attempt to use its 'allocate' and 'deallocate' methods accordingly. The behavior previously provided by Region!(NullAllocator, ...) remains available via BorrowedRegion!(...). See issue 23090 for detailed rationale. - SharedRegion: don't use NullAllocator as sentinel SharedRegion will now always assume that its ParentAllocator is a real allocator, and attempt to use its 'allocate' and 'deallocate' methods accordingly. The behavior previously provided by SharedRegion!(NullAllocator, ...) remains available via shared(BorrowedRegion!(...)). See issue 23090 for detailed rationale. https://github.com/dlang/phobos/pull/8574 --
