[Bug runtime/18503] New: procfs .maxsize() overflow should generate error

["fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18503

            Bug ID: 18503
           Summary: procfs .maxsize() overflow should generate error
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
          Assignee: systemtap at sourceware dot org
          Reporter: fche at redhat dot com
  Target Milestone: ---

probe procfs("foo").read.maxsize(10) {
  $return .= "hello hello hello hello hello hello"
}

... should signal an error or warning, so that a stap script user can tell that
her buffer was too small.  (We already detect the overflow, just don't signal
it.)

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