problem observed in: gcc-4.1.1
problem not observed in: gcc-3.2.3

----------- gcc 4.1.1 -v ----------------
$ gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../crosstool-0.42/build/i686-unknown-linux-gnu/gcc-4.1.1-glibc-2.3.6/gcc-4.1.1/configure --prefix=/users/johnm/opt/gcc4.1.1-native/ --enable-languages=c,c++,ada
Thread model: posix
gcc version 4.1.1

----------- gcc 3.2.3 -v ----------------
$ /usr/bin/gcc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.3/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --host=i386-redhat-linux
Thread model: posix
gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-53

--------------- Build of single-file example: ------------

$ gcc -c outt.adb
+===========================GNAT BUG DETECTED==============================+
| 4.1.1 (i686-pc-linux-gnu) in expand_expr_addr_expr_1, at expr.c:6393     |
| Error detected at outt.adb:19:5                                          |
| Please submit a bug report; see http://gcc.gnu.org/bugs.html.            |
| Use a subject line meaningful to you and us to track the bug.            |
| Include the entire contents of this bug box in the report.               |
| Include the exact gcc or gnatmake command that you entered.              |
| Also include sources listed below in gnatchop format                     |
| (concatenated together with no headers between files).                   |
+==========================================================================+

Please include these source files with error report
Note that list may not be accurate in some cases, 
so please double check that the problem can still 
be reproduced with the set of files listed.

outt.adb

compilation abandoned


------------- build of multifile example: -------------------------------

+===========================GNAT BUG DETECTED==============================+
| 4.1.1 (i686-pc-linux-gnu) in expand_expr_addr_expr_1, at expr.c:6393     |
| Error detected at s-secsta.ads:64:14                                     |
| Please submit a bug report; see http://gcc.gnu.org/bugs.html.            |
| Use a subject line meaningful to you and us to track the bug.            |
| Include the entire contents of this bug box in the report.               |
| Include the exact gcc or gnatmake command that you entered.              |
| Also include sources listed below in gnatchop format                     |
| (concatenated together with no headers between files).                   |
+==========================================================================+

Please include these source files with error report
Note that list may not be accurate in some cases, 
so please double check that the problem can still 
be reproduced with the set of files listed.

eerom.adb
eerom.ads

eerom.adb:4:17: warning: "Number_Units" is never assigned a value
eerom.adb:5:17: warning: "Result" is never assigned a value
compilation abandoned