[MacPorts] #63312: gcc11: jit build failure on macOS 11: Bootstrap comparison failure

[MacPorts]

#63312: gcc11: jit build failure on macOS 11: Bootstrap comparison failure
-------------------------+--------------------
  Reporter:  i0ntempest  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.1
Resolution:              |   Keywords:
      Port:  gcc11       |
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Comment (by kencu):

 the approach to these bootstrap comparison failures used by upstream is to
 disassemble the two non-matching objects and diff them. Then sort out what
 went wrong to make them different.

 99% of them I have seen relate to different debugging format assumptions,
 but other hiccups can happen.

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Ticket URL: <https://trac.macports.org/ticket/63312#comment:8>
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