https://issues.dlang.org/show_bug.cgi?id=17417

          Issue ID: 17417
           Summary: Give error for signed integer promotions in bitwise
                    operations
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: spec
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: dfj1esp02@sneakemail.com

Signed integers - byte and short - are promoted to int in bitwise operations which doesn't make much sense and is bug prone. Also true for promotion from int to long in binary bitwise operations.

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