[11u] RFR: JDK-8222286: Fix for JDK-8213419 is broken on s390

[Andrew Haley]

On 16/09/2020 04:05, Andrew Hughes wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8222286
> Webrev: https://cr.openjdk.java.net/~andrew/openjdk11/8222286/webrev.01/
> 
> On s390 (the 31-bit architecture), calls to log2_intptr with a size_t
> argument are ambiguous, because there is log2_intptr(uintptr_t x) and
> log2_intptr(intptr_t x). This is not a problem on other architectures
> where size_t is the same as uintptr_t. See existing bugs for
> more details of the s390 situation [0] [1] [2].
> 
> The issue can be resolved by explicitly casting to uintptr_t.
> 
> It is not applicable to >= 12u, as JDK-8213436 removed the problematic
> function in which this occurs.
> 
> Ok for 11u?

Sure, but please add a comment. "S/390: Cast to (uintptr_t): see JDK-8222286"
would do. Thanks.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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