https://issues.dlang.org/show_bug.cgi?id=21825

          Issue ID: 21825
           Summary: Do not spuriously warn "calling XXX without side
                    effects discards return value of type 'noreturn'"
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: n8sh.secondary@hotmail.com

See for instance https://github.com/dlang/phobos/pull/7834#issuecomment-792944679

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