[MacPorts] #51520: llvm-3.9 @3.9-r270400_0+assertions+debug build failure on snow leopard due to missing strnlen function - and fix

[MacPorts]

#51520: llvm-3.9 @3.9-r270400_0+assertions+debug build failure on snow leopard due
to missing strnlen function - and fix
-------------------------------------+-------------------------
  Reporter:  kenneth.f.cunningham@…  |      Owner:  jeremyhu@…
      Type:  defect                  |     Status:  new
  Priority:  Normal                  |  Milestone:
 Component:  ports                   |    Version:  2.3.4
Resolution:                          |   Keywords:  snowleopard
      Port:  llvm-3.9                |
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Comment (by jeremyhu@…):

 No, you should not be modifying your SDK to add a static inline version of
 strnlen.  If we really wanted to go that route, we'd add
 -i${filesdir}/strnlen.h to CFLAGS, but I'm hoping to come up with a more
 general solution to this.

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Ticket URL: <https://trac.macports.org/ticket/51520#comment:4>
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