[Bug ada/80626] New: Ada x32 multilib build failure for a-cfinve.ads

["steven at uplinklabs dot net" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80626

            Bug ID: 80626
           Summary: Ada x32 multilib build failure for a-cfinve.ads
           Product: gcc
           Version: 7.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
          Assignee: unassigned at gcc dot gnu.org
          Reporter: steven at uplinklabs dot net
  Target Milestone: ---

I'm sure this would be trivial to fix if I knew any Ada at all, but I've run
into this build failure for GCC 7.1.0 when built with
--with-multilib=m32,m64,mx32 for x86_64.

make[9]: Entering directory
'/home/steven/gcc-multilib/src/gcc-build/gcc/ada/rts_x32'
[...]
/home/steven/gcc-multilib/src/gcc-build/./gcc/xgcc
-B/home/steven/gcc-multilib/src/gcc-build/./gcc/
-B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem
/usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include 
  -c -g -O2 -mx32 -fpic  -W -Wall -gnatpg -nostdinc -mx32  a-cfinve.adb -o
a-cfinve.o
a-cfinve.ads:245:04: warning: in instantiation at a-coboho.adb:55
a-cfinve.ads:245:04: warning: types for unchecked conversion have different
sizes
make[9]: *** [../gcc-interface/Makefile:296: a-cfinve.o] Error 1

Any ideas?