m68k UnoApiTarget/udkapi.rdb build fails ("Bad input")

At least on Debian's autobuilders, builds of LibreOffice for m68k have
been failing since 6.0.0 rc2 with a "Bad input" error when trying to build
UnoApiTarget/udkapi.rdb, per the below excerpt from
https://buildd.debian.org/status/fetch.php?pkg=libreoffice&arch=m68k&ver=1%3A6.0.0-1&stamp=1517451030&raw=0:

  [build DBc] udkapi
mkdir -p /<<PKGBUILDDIR>>/workdir/UnoApiTarget/  && RESPONSEFILE=/tmp/gbuild.RTQBLH && 
LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}"/<<PKGBUILDDIR>>/instdir/program:/<<PKGBUILDDIR>>/instdir/program"
   /<<PKGBUILDDIR>>/workdir/LinkTarget/Executable/unoidl-write  /<<PKGBUILDDIR>>/udkapi 
@${RESPONSEFILE} /<<PKGBUILDDIR>>/workdir/UnoApiTarget/udkapi.rdb && rm -f ${RESPONSEFILE}   && 
LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}"/<<PKGBUILDDIR>>/instdir/program:/<<PKGBUILDDIR>>/instdir/program"
   /<<PKGBUILDDIR>>/instdir/sdk/bin/unoidl-check /<<PKGBUILDDIR>>/udkapi/type_reference/udkapi.idl 
--  /<<PKGBUILDDIR>>/workdir/UnoApiTarget/udkapi.rdb
  [build MOD] codemaker
  Bad input 
<file:///<<PKGBUILDDIR>>/udkapi/com/sun/star/reflection/TypeDescriptionSearchDepth.idl>: cannot 
parse line 37: "out-of-range enum com.sun.star.reflection.TypeDescriptionSearchDepth member 
INFINITE value 9223372036854775807"
  /<<PKGBUILDDIR>>/solenv/gbuild/UnoApiTarget.mk:45: recipe for target 
'/<<PKGBUILDDIR>>/workdir/UnoApiTarget/udkapi.rdb' failed
  make[2]: *** [/<<PKGBUILDDIR>>/workdir/UnoApiTarget/udkapi.rdb] Error 1
  make[2]: *** Waiting for unfinished jobs....

Could somebody please take a look?

Thanks!

FTR, this report corresponds to
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889605 and
https://bugs.documentfoundation.org/show_bug.cgi?id=115450
(closed as out of scope; sorry for the noise there).

-- 
Aaron M. Ucko, KB1CJC (amu at alum.mit.edu, ucko at debian.org)
http://www.mit.edu/~amu/ | http://stuff.mit.edu/cgi/finger/?amu@monk.mit.edu