[MacPorts] #59295: pari does not work in catalina

[MacPorts]

#59295: pari does not work in catalina
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  Reporter:  kontogar  |      Owner:  wbl
      Type:  defect    |     Status:  closed
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.1
Resolution:  fixed     |   Keywords:  catalina
      Port:  pari      |
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Comment (by jmroot):

 Replying to [comment:4 wbl]:
 > What exactly is the stack check breaking and why?

 I haven't seen a definitive analysis from anyone, but it seems to be a
 compiler bug and there has been speculation it's related to incorrectly
 requiring a certain stack alignment. What's known is that older versions
 of Apple clang don't turn on -fstack-check by default, and the current
 version only turns it on when using a deployment target of 10.15, and
 using -fno-stack-check seems to work around the crash (though the jury's
 out on whether there is still incorrect behaviour otherwise).

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Ticket URL: <https://trac.macports.org/ticket/59295#comment:6>
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