[MacPorts] #45131: Unable to update gmp

[MacPorts]

#45131: Unable to update gmp
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  Reporter:  mikemadden42@…  |      Owner:  mcalhoun@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.1
Resolution:                  |   Keywords:
      Port:  gmp             |
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Comment (by cal@…):

 These clang errors are actually errors but they fail to terminate
 compilation like they should. Clang miscompiles code when this happens (as
 in your example). A workaround is usually to outright delete the offending
 folder (i.e. `/var/folders/h6/3f7lvmw96_jbw0w9tmn54rph0000gq` in your
 case). Then clean and try again.

 This happens because the folder gets created as root, but MacPorts
 subsequently tries to use it as the macports user, which consequently
 fails afterwards. We're just not sure *where* MacPorts is calling the
 compiler as root, or we would have fixed it.

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Ticket URL: <https://trac.macports.org/ticket/45131#comment:5>
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