[Bug bootstrap/49246] New: bootstrap comparison failure with 174455 on OpenBSD

[jsg at openbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49246

           Summary: bootstrap comparison failure with 174455 on OpenBSD
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jsg@openbsd.org


bootstrap fails with revision 174455 on OpenBSD/i386 -current.
Compiled with a lightly patched GCC 4.2.1

This is a different list of object files to pr 49242 so opening a new pr.

Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
Bootstrap comparison failure!
gcc/build/genautomata.o differs
gcc/cfgexpand.o differs
gcc/dwarf2out.o differs
gcc/ipa-prop.o differs
gcc/matrix-reorg.o differs
gcc/sel-sched.o differs
gcc/tree-data-ref.o differs
gcc/tree-into-ssa.o differs
gcc/tree-predcom.o differs
gcc/tree-ssa-math-opts.o differs
gcc/tree-ssa-sccvn.o differs
gcc/tree-vect-slp.o differs
gcc/tree-vrp.o differs
gmake[2]: *** [compare] Error 1

./stage3-gcc/xgcc -v                                                           
Using built-in specs.
COLLECT_GCC=./stage3-gcc/xgcc
Target: i386-unknown-openbsd4.9
Configured with: ../gcc/configure --prefix=/usr/gcc
--program-transform-name='s,^,e,' --disable-nls --with-system-zlib
--disable-libmudflap --disable-libgomp --disable-tls --with-as=/usr/bin/as
--with-ld=/usr/bin/ld --with-gnu-ld --with-gnu-as --enable-threads=posix
--enable-wchar_t --disable-checking --disable-lto --enable-languages=c,c++
--with-gmp=/usr/local --with-mpfr=/usr/local
Thread model: posix
gcc version 4.7.0 20110530 (experimental) (GCC)

gcc -v
Reading specs from /usr/lib/gcc-lib/i386-unknown-openbsd4.9/4.2.1/specs
Target: i386-unknown-openbsd4.9
Configured with: OpenBSD/i386 system compiler
Thread model: posix
gcc version 4.2.1 20070719

With a currently unsubmitted OpenBSD/amd64 target the problem is almost but not
quite the same:

Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
Bootstrap comparison failure!
gcc/build/genautomata.o differs
gcc/cfgexpand.o differs
gcc/dwarf2out.o differs
gcc/ipa-prop.o differs
gcc/sel-sched.o differs
gcc/tree-into-ssa.o differs
gcc/tree-predcom.o differs
gcc/tree-ssa-math-opts.o differs
gcc/tree-ssa-sccvn.o differs
gcc/tree-vrp.o differs
gcc/var-tracking.o differs
gmake[2]: *** [compare] Error 1