Snippets for gdb 16.3 from Alpine ppc64le

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-ppc64le/main/gdb/gdb-16.3-r4.log.

../../../gnulib/import/canonicalize-lgpl.c:438:5: warning: #warning "GCC might issue a bogus -Wreturn-local-addr warning here." [-Wcpp]
  438 |    #warning "GCC might issue a bogus -Wreturn-local-addr warning here."
      |     ^~~~~~~

../../../gnulib/import/canonicalize-lgpl.c:439:5: warning: #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>." [-Wcpp]
  439 |    #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>."
      |     ^~~~~~~

/usr/include/sys/termios.h:1:2: warning: #warning redirecting incorrect #include <sys/termios.h> to <termios.h> [-Wcpp]
    1 | #warning redirecting incorrect #include <sys/termios.h> to <termios.h>
      |  ^~~~~~~

../../../gnulib/import/canonicalize-lgpl.c:438:5: warning: #warning "GCC might issue a bogus -Wreturn-local-addr warning here." [-Wcpp]
  438 |    #warning "GCC might issue a bogus -Wreturn-local-addr warning here."
      |     ^~~~~~~

../../../gnulib/import/canonicalize-lgpl.c:439:5: warning: #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>." [-Wcpp]
  439 |    #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>."
      |     ^~~~~~~

/usr/include/sys/termios.h:1:2: warning: #warning redirecting incorrect #include <sys/termios.h> to <termios.h> [-Wcpp]
    1 | #warning redirecting incorrect #include <sys/termios.h> to <termios.h>
      |  ^~~~~~~

/usr/include/sys/fcntl.h:1:2: warning: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Wcpp]
    1 | #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h>
      |  ^~~~~~~

/usr/include/sys/fcntl.h:1:2: warning: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Wcpp]
    1 | #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h>
      |  ^~~~~~~

/usr/include/sys/fcntl.h:1:2: warning: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Wcpp]
    1 | #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h>
      |  ^~~~~~~

/usr/include/sys/poll.h:1:2: warning: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Wcpp]
    1 | #warning redirecting incorrect #include <sys/poll.h> to <poll.h>
      |  ^~~~~~~

sh/ppi.c:1263:26: warning: 'greater_equal' may be used uninitialized [-Wmaybe-uninitialized]
 1263 |     DSR |= greater_equal | (res_grd >> 2 & DSR_MASK_N) | overflow;
      |            ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../../sim/frv/sem.c:6725:5: warning: 'tmp_address' may be used uninitialized [-Wmaybe-uninitialized]
 6725 |     sim_queue_fn_si_write (current_cpu, frvbf_h_gr_set, FLD (f_GRi), opval);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../../sim/frv/sem.c:4611:5: warning: 'tmp_address' may be used uninitialized [-Wmaybe-uninitialized]
 4611 |     sim_queue_fn_si_write (current_cpu, frvbf_h_gr_set, FLD (f_GRi), opval);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../../sim/frv/sem.c:4565:5: warning: 'tmp_address' may be used uninitialized [-Wmaybe-uninitialized]
 4565 |     sim_queue_fn_si_write (current_cpu, frvbf_h_gr_set, FLD (f_GRi), opval);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~