[MacPorts] #61536: asymptote @2.65 build on Big Sur causes kernel panic.

[MacPorts]

#61536: asymptote @2.65 build on Big Sur causes kernel panic.
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  Reporter:  snowflake  |      Owner:  mojca
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.99
Resolution:             |   Keywords:
      Port:  asymptote  |
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Comment (by snowflake):

 Asymptote process ```asy``` has a severe memory leak - tens of GB.

 In ```/Library/Logs/DiagnosticReports``` I found a file
 ```Kernel-2020-11-18-100514.panic``` .
 It is in JSON with a large chunk of modified Base64. I extracted the
 Base64, deleted the ```\```  characters and decoded it. It turned out to
 be a long list of the processes running
 at the time of the panic.  There were 4 instances of ```asy``` and each
 was taking more then 10GB of memory footprint.  Using ```locate```, I
 found that ```asy``` was in the work folder for the ```asymptote``` build.

 I initially surmised that the panic was due to an obscure bug in the
 compiler, but I am probably wrong. It's either a bug in ```asymptote``` or
 the compiler is producing duff code.

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Ticket URL: <https://trac.macports.org/ticket/61536#comment:2>
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