[MacPorts] #67412: Error building gcc12 on MacOS Catalina

[MacPorts]

#67412: Error building gcc12 on MacOS Catalina
---------------------+--------------------
  Reporter:  dbl001  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.8.1
Resolution:          |   Keywords:
      Port:  gcc12   |
---------------------+--------------------

Comment (by kencu):

 {{{
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc12/gcc12/work/gcc-12.3.0/libiberty/objalloc.c:198:42:
 error: unknown type name 'PTR'
 :info:build objalloc_free_block (struct objalloc *o, PTR block)
 :info:build                                          ^
 }}}

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Ticket URL: <https://trac.macports.org/ticket/67412#comment:1>
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