[MacPorts] #67248: grep @3.10 is broken on Tiger: error: expected '=', ',', '; ', 'asm' or '__attribute__' before 'mcontext64_t'

[MacPorts]

#67248: grep @3.10 is broken on Tiger: error: expected '=', ',', ';', 'asm' or
'__attribute__' before 'mcontext64_t'
---------------------------+-------------------------
  Reporter:  barracuda156  |      Owner:  Schamschula
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.8.1
Resolution:                |   Keywords:  tiger
      Port:  grep          |
---------------------------+-------------------------

Comment (by barracuda156):

 Apparently only on Tiger (also Leopard? not sure). On 10.6.8 and 10A190
 Apple gcc-4.2 builds it fine, so it is not a compiler issue per se.

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Ticket URL: <https://trac.macports.org/ticket/67248#comment:4>
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