[Bug ada/32654] New: [4.2 regression] Ada comparison failure in exp_aggr.o on Tru64 UNIX V5.1B

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

Bootstrapping the current 4.2 branch on alpha-dec-osf5.1b with GCC 3.4 as
the bootstrap compiler, I get a comparison failure in exp_aggr.o:

Comparing stages 2 and 3
Bootstrap comparison failure!
./ada/exp_aggr.o differs
make[2]: *** [compare] Error 1

There's only a minimal difference in the debugging info:

--- prev-gcc/exp_aggr.s Fri Jun 15 21:55:38 2007
+++ gcc/exp_aggr.s      Fri Jun 15 21:56:39 2007
@@ -13799,7 +13799,7 @@
        beq $0,$L1053
 $L974:
 $LBB210:
- #.stabn       68,0,3263,$LM2081
+ #.stabn       68,0,3155,$LM2081
 $LM2081:
        bis $31,$31,$1
 $L973:

This happens since at least 20070506 and only on alpha-dec-osf5.1b,
alpha-dec-osf4.0f is unaffected (as is mainline unless I'm mistaken).

Environment:
System: OSF1 bartok V5.1 2650 alpha
Machine: alpha

host: alpha-dec-osf5.1b
build: alpha-dec-osf5.1b
target: alpha-dec-osf5.1b
configured with: /vol/gcc/src/gcc-4.2-branch-dist/configure --prefix=/vol/gcc
--with-local-prefix=/vol/gcc --disable-nls --host alpha-dec-osf5.1b --build
alpha-dec-osf5.1b --target alpha-dec-osf5.1b --with-gmp=/vol/gcc
--with-mpfr=/vol/gcc --enable-languages=c,c++,fortran,java,objc,ada

How-To-Repeat:
Bootstrap the 4.2 branch as described above.


-- 
           Summary: [4.2 regression] Ada comparison failure in exp_aggr.o on
                    Tru64 UNIX V5.1B
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at techfak dot uni-bielefeld dot de
 GCC build triplet: alpha-dec-osf5.1b
  GCC host triplet: alpha-dec-osf5.1b
GCC target triplet: alpha-dec-osf5.1b


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32654