On Tue, 3 Nov 2020 18:30:46 GMT, Aleksey Shipilev <sh...@openjdk.org> wrote:

>> Add 32-bit-safe version of jlong <-> casts to libJNIPoint.c
>> 
>> This removes the reported warning.
>> 
>> Note that the _LP64 macro was not being propagated to the benchmark native 
>> libraries on Windows. The comment says that this is due to pack200, but 
>> since this has been removed [1], it seemed safe to propagate the macro now 
>> (backed up by testing).
>> 
>> CC'ing hotspot-runtime since I know some people there were looking forward 
>> to having this fixed.
>> 
>> Testing: tier1-3
>> 
>> [1] https://bugs.openjdk.java.net/browse/JDK-8232022
>
> I knew this looks familiar. Look at [existing macros in 
> jlong_md.h](https://github.com/openjdk/jdk/blob/master/src/java.base/unix/native/libjava/jlong_md.h#L67-L81)
>  and use/match them? There is a little difference in casting through `jint` 
> in your code, while `jlong_md.h` does it via `int`.

@shipilev Now that I look at the file you linked, it does look familiar to me 
as well. Must have copy-pasted it from my subconscious ;)

Looks like this file is usable from the benchmark lib code as well, will try to 
switch.

-------------

PR: https://git.openjdk.java.net/jdk/pull/1017

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