On Mon, 4 Dec 2023 09:10:07 GMT, Per Minborg <pminb...@openjdk.org> wrote:

>> This PR proposes to reject paths provided to the 
>> `SymbolLookup.libraryLookup(Path path, Arena arena)` method if a path is not 
>> in the default file system.
>
> Per Minborg has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Add fail statement

test/jdk/java/foreign/LibraryLookupTest.java line 128:

> 126:             }
> 127:         }
> 128:         throw new AssertionError("Unable to create file system from " + 
> clazz);

Using a class from testng.jar is a good idea. An alternative to decoding the 
composite URL is to use the code source from the protection domain, e.g.

URI uri = clazz.getProtectionDomain().getCodeSource().getLocation().toURI();
return FileSystems.newFileSystem(Path.of(uri));

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PR Review Comment: https://git.openjdk.org/jdk/pull/16944#discussion_r1413645073

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