[MacPorts] #60449: gcc10 missing header <wchar.h>

[MacPorts]

#60449: gcc10 missing header <wchar.h>
-----------------------+----------------------
  Reporter:  haberg-1  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.2
Resolution:            |   Keywords:  catalina
      Port:  gcc10     |
-----------------------+----------------------

Comment (by haberg-1):

 It gives compilation error:

 % /opt/local/bin/g++-mp-10 test.cpp -o test
 test.cpp:1:10: fatal error: wchar.h: No such file or directory
     1 | #include <wchar.h>
       |          ^~~~~~~~~
 compilation terminated.

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Ticket URL: <https://trac.macports.org/ticket/60449#comment:8>
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