[Bug java/21844] New: miscompilation of LinkedHashMap

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

This happens with 4.1 but not with 4.0.x.
It occurs even without -O.

I believe java.util.LinkedHashMap is being miscompiled.
You can see this by trying the test case in PR 20273.
For me, it crashes.

In the debugger I observed that this line from
LinkedHashMap$LinkedHashEntry.access() is incrementing
the 'succ' field and not the modCount field:
          modCount++;

-- 
           Summary: miscompilation of LinkedHashMap
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tromey at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org
 GCC build triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21844