[lworld] Integrated: 8255995: templateTable_x86.cpp (TemplateTable::if_acmp) not always do correct null check.

David Simms dsimms at openjdk.java.net
Wed Nov 18 08:31:14 UTC 2020


On Tue, 17 Nov 2020 17:54:36 GMT, David Simms <dsimms at openjdk.org> wrote:

> Testing both pointers at the same time, doesn't account for the case where bits
> completely miss each other, resulting in zero as result e.g.
> 
>   test(0x10, 0x01) == 0x10 & 0x01 == 0, yet neither are null

This pull request has now been integrated.

Changeset: e9217dad
Author:    David Simms <dsimms at openjdk.org>
URL:       https://git.openjdk.java.net/valhalla/commit/e9217dad
Stats:     19 lines in 2 files changed: 18 ins; 0 del; 1 mod

8255995: templateTable_x86.cpp (TemplateTable::if_acmp) not always do correct null check.

Reviewed-by: fparain, thartmann

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PR: https://git.openjdk.java.net/valhalla/pull/266


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