[foreign-jextract] RFR: Update memory access and linker documents [v3]

[Jorn Vernee]

On Thu, 25 Mar 2021 15:32:28 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Maurizio Cimadamore has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Another ffi fix
>>  - Minor adjustments to the ffi document
>
> doc/panama_ffi.md line 216:
> 
>> 214:     long len = strlen_virtual.invokeExact(
>> 215:         LibraryLookup.ofDefault().lookup("strlen").get() // address provided here!
>> 216:         CLinker.toCString("Hello").address()
> 
> The scope is not being used for the string here.

Looking at the full source code at the end, this also seems to mismatch with that.

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PR: https://git.openjdk.java.net/panama-foreign/pull/475