[MacPorts] #59253: libgcc9/gcc9: build fails with clang-9.0 during build of gencondmd: Undefined symbols for architecture x86_64: "ix86_binary_operator_ok(rtx_code, machine_mode, rtx_def**)"

[MacPorts]

#59253: libgcc9/gcc9: build fails with clang-9.0 during build of gencondmd:
Undefined symbols for architecture x86_64:
"ix86_binary_operator_ok(rtx_code, machine_mode, rtx_def**)"
---------------------------+--------------------
  Reporter:  kencu         |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  libgcc9 gcc9  |
---------------------------+--------------------

Comment (by kencu):

 Upstream bug report <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92061>

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Ticket URL: <https://trac.macports.org/ticket/59253#comment:3>
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