Request for Review (S) 6852078: HSX 14/16 in jdk 5.0: api/javax_management api/org_omg jck tests crashes or make tnameserv crash

[Changpeng Fang]

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Thanks,

> http://cr.openjdk.java.net/~cfang/6852078/webrev.00/
>
> Note that I am requesting for change to the current jdk source (For 
> the SubCR)
>
> 6852078: HSX 14/16 in jdk 5.0: api/javax_management api/org_omg jck 
> tests crashes or make tnameserv crash
>
> Problem: Current implementation of superword optimization does not 
> check for unsafe memory accesses. Since
> unsafe memory accesses could not be aligned appropriately without 
> runtime checking, a un-aligned superword
> read/write could cause runtime failure.
>
> Solution: Simply disable superword for unsafe memory access whose base 
> is top.
>
> Tests: Test case in 6852078
>
> Thanks,
>
> Changpeng
>
>