[Bug bootstrap/44993] New: [4.6 regression] sparc64-linux bootstrap broken

[laurent at guerby dot net]

full 64 bit bootstrap is now failing:

r161903 ok
r161941 ko

/home/guerby/build/./gcc/xgcc -B/home/guerby/build/./gcc/
-B/n/62/guerby/install-trunk-64/sparc64-unknown-linux-gnu/bin/
-B/n/62/guerby/install-trunk-64/sparc64-unknown-linux-gnu/lib/ -isystem
/n/62/guerby/instal\
l-trunk-64/sparc64-unknown-linux-gnu/include -isystem
/n/62/guerby/install-trunk-64/sparc64-unknown-linux-gnu/sys-include    -c -g
-O2  -fPIC  -W -Wall -gnatpg   a-cdlili.adb -o a-cdlili.o
+===========================GNAT BUG DETECTED==============================+
| 4.6.0 20100708 (experimental) [trunk revision 161941]
(sparc64-unknown-linux-gnu) |
| Storage_Error stack overflow (or erroneous memory access)                |
| Error detected at s-finroo.ads:53:4                                      |

Then at r162274 there's a new earlier failure in bootstrap, probably masking
the above:

Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/dwarf2out.o differs
gcc/tree-ssa.o differs
libdecnumber/decNumber.o differs
libdecnumber/decimal32.o differs
libdecnumber/decimal64.o differs
libdecnumber/decimal128.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/guerby/build'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/home/guerby/build'
make: *** [bootstrap] Error 2

configure line:

export CC="gcc -m64"
../trunk/configure --prefix=/n/62/guerby/install-trunk-64 --disable-werror
--enable-languages=c,ada --enable-__cxa_atexit --disable-nls
--enable-threads=posix --with-mpfr=/opt/cfarm/mpfr-2.4.1-64
--with-gmp=/opt/cfarm/gmp-4.2.4-64 --with-mpc=/opt/cfarm/mpc-0.8-64


-- 
           Summary: [4.6 regression] sparc64-linux bootstrap broken
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: laurent at guerby dot net
 GCC build triplet: sparc64-unknown-linux-gnu
  GCC host triplet: sparc64-unknown-linux-gnu
GCC target triplet: sparc64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44993