[RTEMS Project] #4662: Fix GCC 12 warnings

[RTEMS trac]

#4662: Fix GCC 12 warnings
-------------------------+---------------------
 Reporter:  Chris Johns  |       Owner:  (none)
     Type:  defect       |      Status:  new
 Priority:  normal       |   Milestone:  6.1
Component:  tool/gcc     |     Version:  6
 Severity:  blocker      |  Resolution:
 Keywords:               |  Blocked By:
 Blocking:               |
-------------------------+---------------------

Comment (by Sebastian Huber <sebastian.huber@…>):

 In [changeset:"c2269908364cd60f78ba5aa747f9082a168e459b/rtems"
 c226990/rtems]:
 {{{
 #!CommitTicketReference repository="rtems"
 revision="c2269908364cd60f78ba5aa747f9082a168e459b"
 score: Do not expose <limits.h> to <rtems.h>

 The <rtems.h> header file should not unnecessarily include standard C
 header files.  The <string.h> and <limits.h> header includes were
 removed in 2017.

 Update #4662.
 }}}

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Ticket URL: <http://devel.rtems.org/ticket/4662#comment:25>
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