[Bug bootstrap/53466] New: [4.8 Regression] Bootstrap failure

[Bug bootstrap/53466] New: [4.8 Regression] Bootstrap failure

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53466

             Bug #: 53466
           Summary: [4.8 Regression] Bootstrap failure
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com
                CC: rguenth@gcc.gnu.org


On Linux/x86, revision 187800:

http://gcc.gnu.org/ml/gcc-cvs/2012-05/msg00797.html

caused:

Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/trans-mem.o differs
gcc/gimple-low.o differs
gcc/sese.o differs
make[5]: *** [compare] Error 1

Please make sure that compiler used for bootstrap
doesn't add anything to .comment section, which will
disable debug compare.

[Bug bootstrap/53466] [4.8 Regression] Bootstrap failure

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53466

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-05-24
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.8.0
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-24 07:34:03 UTC ---
Mine.

[Bug bootstrap/53466] [4.8 Regression] Bootstrap failure

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53466

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-24 09:54:30 UTC ---
Author: rguenth
Date: Thu May 24 09:54:25 2012
New Revision: 187824

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187824
Log:
2012-05-24  Richard Guenther  <rguenther@suse.de>

    PR bootstrap/53466
    * tree-ssa-live.c (remove_unused_scope_block_p): Properly
    handle globals.
    (remove_unused_locals): Pass global_unused_vars to
    remove_unused_scope_block_p.  Restore code walking all
    referenced vars and pruning them.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-live.c

[Bug bootstrap/53466] [4.8 Regression] Bootstrap failure

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53466

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-24 10:20:14 UTC ---
Fixed.

[Bug bootstrap/53466] [4.8 Regression] Bootstrap failure

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53466

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-24 12:36:47 UTC ---
Author: rguenth
Date: Thu May 24 12:36:40 2012
New Revision: 187830

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187830
Log:
2012-05-24  Richard Guenther  <rguenther@suse.de>

    PR bootstrap/53466
    * g++.dg/debug/pr53466.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/debug/pr53466.C
Modified:
    trunk/gcc/testsuite/ChangeLog