[Bug bootstrap/57494] New: [4.9 Regression] Failed to bootstrap

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57494

            Bug ID: 57494
           Summary: [4.9 Regression] Failed to bootstrap
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

On Linux/x86-64, revision 199564 failed to bootstrap:

make[4]: Leaving directory `/export/build/gnu/gcc/build-x86_64-linux'
Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/driver-i386.o differs
libiberty/pic/sha1.o differs
make[3]: *** [compare] Error 1
make[3]: Leaving directory `/export/build/gnu/gcc/build-x86_64-linux'
make[2]: *** [stage3-bubble] Error 2
make[2]: Leaving directory `/export/build/gnu/gcc/build-x86_64-linux'
make[1]: *** [bootstrap] Error 2

Revision 199557 is OK.