[MacPorts] #65128: xar @1.8.0.487.100.1: error: variable-sized object may not be initialized

[MacPorts]

#65128: xar @1.8.0.487.100.1: error: variable-sized object may not be initialized
-------------------------+-------------------------------------------------
  Reporter:              |      Owner:  Schamschula
  barracuda156           |
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.2
Resolution:              |   Keywords:  powerpc, tiger, leopard,
      Port:  xar         |  snowleopard
-------------------------+-------------------------------------------------

Comment (by ryandesign):

 Replying to [comment:14 Schamschula]:
 > Hence, I tried setting {{{compiler.c_standard 2011}}}, which worked for
 all Intel and Apple SoC machines.

 What worked was removing `-std=c99`, returning clang to its default
 `-std=gnu99` mode; requiring a 2011 compiler does not seem to be relevant
 since c11 mode is not being enabled via `-std=c11`.

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Ticket URL: <https://trac.macports.org/ticket/65128#comment:19>
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