[RTEMS Project] #3393: 4.11: infinite loop in RSB's path when a prefix path is not writable

[RTEMS trac]

#3393: 4.11: infinite loop in RSB's path when a prefix path is not writable
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  Reporter:  Chris Johns  |      Owner:  Chris Johns
      Type:  defect       |     Status:  assigned
  Priority:  normal       |  Milestone:  4.11.4
 Component:  tool/rsb     |    Version:  4.11
  Severity:  normal       |   Keywords:
Blocked By:               |   Blocking:
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 The code gets the `dirname()` of the path stepping up until there is no
 path however `dirname('/')` is `/` so the path never has a length of `0`.

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Ticket URL: <http://devel.rtems.org/ticket/3393>
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