https://issues.dlang.org/show_bug.cgi?id=23419

          Issue ID: 23419
           Summary: grammar error in
                    std/experimental/allocator/building_blocks/segregator.
                    d
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: phobos
          Assignee: nobody@puremagic.com
          Reporter: garrett@damore.org

This is protected by Stddoc but this is not compilable if you change the version to something that should build:

```
    version (StdDdoc)
    {
        /**
        The alignment offered is the minimum of the two allocators' alignment.
        */
        enum uint alignment;
```

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