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From "Alexey Varlamov (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-4073) [drlvm][jit] RCE must not substitute EFLAGS values produced by CMP with ones produced by SBB
Date Thu, 07 Jun 2007 13:01:36 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-4073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexey Varlamov reassigned HARMONY-4073:
----------------------------------------

    Assignee: Alexey Varlamov

> [drlvm][jit] RCE must not substitute EFLAGS values produced by CMP with ones produced
by SBB
> --------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-4073
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4073
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Mikhail Fursov
>            Assignee: Alexey Varlamov
>         Attachments: i8.fix
>
>
> I found that LongTest from luni module fails when run with OPT.
> The minimized testcase is:
>     System.out.println(foo(Long.MIN_VALUE));
>     static boolean foo(long v) {
>         v = -v;
>         return v < 0;    
>     }
> RI prints 'true' but DRLVM in -Xem:opt mode prints 'false' here.
> The reason of failure is illegal RCE behaviour: it must not substitute EFLAGS values
produced by CMP with ones produced by SBB

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