[Bug bootstrap/55321] New: [4.8 regression] Ada bootstrap failure on armv5tel-linux-gnueabi

["mikpe at it dot uu.se" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55321

             Bug #: 55321
           Summary: [4.8 regression] Ada bootstrap failure on
                    armv5tel-linux-gnueabi
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


Attempting to bootstrap gcc-4.8-20121111 on armv5tel-linux-gnueabi w/ Ada fails
with:

/mnt/scratch/objdir48/./gcc/xgcc -B/mnt/scratch/objdir48/./gcc/
-B/mnt/scratch/install48/armv5tel-unknown-linux-gnueabi/bin/
-B/mnt/scratch/install48/armv5tel-unknown-linux-gnueabi/lib/ -isystem
/mnt/scratch/install48/armv5tel-unknown-linux-gnueabi/include -isystem
/mnt/scratch/install48/armv5tel-unknown-linux-gnueabi/sys-include    -c -g -O2 
-fPIC  -W -Wall -gnatpg -nostdinc   s-stposu.adb -o s-stposu.o
s-stposu.ads: In function
'System.Storage_Pools.Subpools.Root_Storage_Pool_With_Subpoolsdf':
s-stposu.ads:198:9: warning: 'A40s' may be used uninitialized in this function
[-Wmaybe-uninitialized]
s-stposu.ads: In function 'System.Storage_Pools.Subpools.Root_Subpooldf':
s-stposu.ads:240:9: warning: 'A69s' may be used uninitialized in this function
[-Wmaybe-uninitialized]
+===========================GNAT BUG DETECTED==============================+
| 4.8.0 20121111 (experimental) (armv5tel-unknown-linux-gnueabi) GCC error:|
| in merge_latch_edges, at cfgloop.c:678                                   |
| Error detected around s-stposu.adb:565:8                                 |
| 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.
Consider also -gnatd.n switch (see debug.adb).

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raised TYPES.UNRECOVERABLE_ERROR : comperr.adb:432
make[7]: *** [s-stposu.o] Error 1
make[7]: Leaving directory `/mnt/scratch/objdir48/gcc/ada/rts'
make[6]: *** [gnatlib] Error 2
make[6]: Leaving directory `/mnt/scratch/objdir48/gcc/ada'
make[5]: *** [gnatlib-shared-default] Error 2
make[5]: Leaving directory `/mnt/scratch/objdir48/gcc/ada'
make[4]: *** [gnatlib-shared-dual] Error 2
make[4]: Leaving directory `/mnt/scratch/objdir48/gcc/ada'
make[3]: *** [gnatlib-shared] Error 2
make[3]: Leaving directory `/mnt/scratch/objdir48/gcc/ada'
make[2]: *** [gnatlib-shared] Error 2
make[2]: Leaving directory
`/mnt/scratch/objdir48/armv5tel-unknown-linux-gnueabi/libada'
make[1]: *** [all-target-libada] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir48'
make: *** [bootstrap] Error 2

4.8-20121028 succeeded to bootstrap so this is a recent regression.

Full configuration parameters:
/mnt/scratch/gcc-4.8-20121111/configure --prefix=/mnt/scratch/install48
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-languages=c,c++,fortran,ada
--disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --disable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--disable-sjlj-exceptions --with-arch=armv5te --with-tune=xscale
--build=armv5tel-unknown-linux-gnueabi --disable-plugin --disable-lto
--disable-libmudflap