[MacPorts] #59402: llvm and clang +assertions ?

[MacPorts]

#59402: llvm and clang +assertions ?
-------------------------+--------------------
  Reporter:  mouse07410  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  clang-9.0   |
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Comment (by kencu):

 Assertions are useful for debugging clang, llvm, and lldb themselves. They
 can point to a very specific place where there is an error. There are many
 WWW articles, eg <http://pgbovine.net/programming-with-asserts.htm>.

 Jeremy has them "on" for the devel versions only, as they slow down the
 code quite a bit.

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Ticket URL: <https://trac.macports.org/ticket/59402#comment:1>
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