Pb cross compilation GNAT3.10p sunos -> lynxos

Pb cross compilation GNAT3.10p sunos -> lynxos

[grave]

Hi,

I'm trying to cross compile gnat3.10p on a solaris2.6 to a lynxos 2.4,
when it comme to compile the gnatlib the following command :
../../xgcc -B../../ -c -O2
-I/import/netWare/sparc-sun-solaris2.6/rs6000-ibm-lynxos/include -v
-UIN_GCC  -gnatpg -I. -I. g-spipat.adb

give the following error :
+===========================GNAT BUG
DETECTED==============================+
| Error detected at
g-spipat.adb:53:26                                     |
| Please submit bug report by email to
report@gnat.com                     |
| Use a subject line meaningful to you and us to track the
bug             |
| Include full sources in ASCII in a format compatible with
gnatchop       |
| First line of sources must be marked by an Ada -- comment
line           |
| Last line of sources must be last line of email message (no
signature!)  |
| See gnatinfo.txt file for more info on procedure for submitting
bugs     |
| 3.10p (970814) (rs6000-ibm-lynxos)
Constraint_Error                      |
+==========================================================================+

I didn't send it to report@gnat.com since It's the cross gnat1 I've
compiled
for lynxos which give a bug and not the sunos one.

Somebody who can help ?
Thanks in advance.