[MacPorts] #69374: gcc13 optimizer bug in ncurses

[MacPorts]

#69374: gcc13 optimizer bug in ncurses
---------------------------+--------------------
  Reporter:  ThomasDickey  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  gcc13         |
---------------------------+--------------------

Comment (by ThomasDickey):

 Using gcc12 to report a redefinition tells me (on my Ventura machine)
 {{{
 ../ncurses/./tty/tty_update.c:218: warning: "MB_LEN_MAX" redefined
   218 | #define MB_LEN_MAX 20
       |
 In file included from
 /Library/Developer/CommandLineTools/SDKs/MacOSX13.sdk/usr/include/machine/limits.h:9,
                  from
 /Library/Developer/CommandLineTools/SDKs/MacOSX13.sdk/usr/include/limits.h:64,
                  from /opt/local/lib/gcc12/gcc/x86_64-apple-
 darwin22/12.3.0/include-fixed/limits.h:203,
                  from /opt/local/lib/gcc12/gcc/x86_64-apple-
 darwin22/12.3.0/include-fixed/syslimits.h:7,
                  from /opt/local/lib/gcc12/gcc/x86_64-apple-
 darwin22/12.3.0/include-fixed/limits.h:34,
                  from ../ncurses/curses.priv.h:76,
                  from ../ncurses/./tty/tty_update.c:49:
 /Library/Developer/CommandLineTools/SDKs/MacOSX13.sdk/usr/include/i386/limits.h:45:
 note: this is the location of the previous definition
    45 | #define MB_LEN_MAX      6               /* Allow 31 bit UTF2 */
       |
 }}}

 but gcc13 doesn't see those files:
 {{{
 ../ncurses/./tty/tty_update.c:218: warning: "MB_LEN_MAX" redefined
   218 | #define MB_LEN_MAX 20
       |
 In file included from ../ncurses/curses.priv.h:76,
                  from ../ncurses/./tty/tty_update.c:49:
 /opt/local/lib/gcc13/gcc/x86_64-apple-darwin22/13.2.0/include/limits.h:33:
 note: this is the location of the previous definition
    33 | #define MB_LEN_MAX 1
       |
 }}}

 Since my Sonoma machine gives the same misbehavior in ncurses, I think
 it's the same issue.

-- 
Ticket URL: <https://trac.macports.org/ticket/69374#comment:9>
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