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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/48364] New: [4.7 regression] assertion failure in IRA
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48364

           Summary: [4.7 regression] assertion failure in IRA
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: major
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ebotcazou@gcc.gnu.org
              Host: i586-*-*
            Target: i586-*-*
             Build: i586-*-*


Bootstrap with Ada enabled fails on i586:

eric@atlantis:~/build/gcc/native32/gcc/ada/tools> ../../xgcc -c -I./ -I../rts
-I. -I/home/eric/svn/gcc/gcc/ada -B../../ -g -O2 -gnatpg -gnata -I-
/home/eric/svn/gcc/gcc/ada/clean.adb
bad allocation for 512 and 412
+===========================GNAT BUG DETECTED==============================+
| 4.7.0 20110330 (experimental) [trunk revision 171716] (i586-suse-linux-gnu)
GCC error:|
| in check_allocation, at ira.c:2094                                       |
| Error detected around /home/eric/svn/gcc/gcc/ada/clean.adb:529:8         |

I'm going to try and reduce the problem.