[MacPorts] #65532: isl @0.25: builds failing for 10.13: call to unavailable member function 'value'

[MacPorts]

#65532: isl @0.25: builds failing for 10.13: call to unavailable member function
'value'
-------------------------+---------------------------------
  Reporter:  dyne2meter  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.2
Resolution:              |   Keywords:
      Port:  isl         |
-------------------------+---------------------------------

Comment (by kencu):

 or fixing the c++ tests to be more robust. That is for sure better, if
 someone has the chops to do it.

 A small step in fixing the tests was already added last version I note.
 Maybe it is possible, with appropriate time and talent, to fix the tests.

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Ticket URL: <https://trac.macports.org/ticket/65532#comment:6>
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