On Thu, 27 Mar 2025 14:15:12 GMT, Joachim Kern <jk...@openjdk.org> wrote:

>> The test `testEcoFriendly()` checks if the launcher pollutes the 
>> `LD_LIBRARY_PATH` environment variable.
>> Because aix and musl intentionally pollute the `LD_LIBRARY_PATH`, it does 
>> not make sense to make this test somehow passing with crude workarounds, 
>> which even do not work in any case. It only works when the test is executed 
>> by jtreg without explicitly setting `LD_LIBRARY_PATH`.
>> 
>> The problem occurs if the `LD_LIBRARY_PATH` is set from outside, so the test 
>> is called with an already set `LD_LIBRARY_PATH`. This means internally the 
>> `LD_LIBRARY_PATH` is polluted with the generic pollution on AIX/musl  
>> (called A) and the additional jtreg set `LD_LIBRARY_PATH` (called B).
>> The result is, the test has A:B in its `LD_LIBRARY_PATH`. Then the test 
>> launched a new VM also with an explicitly given `LD_LIBRARY_PATH` (called 
>> C). This VM has the resulting `LD_LIBRARY_PATH` A:C which is being reported 
>> to the calling Test.
>> Now the test compares the returned A:C against the A:B from the test adding 
>> the known C. `if (A:C == A:B:C)`.
>> Because the test neither knows A nor B, but only C there is now way to 
>> program a working comparison. It only works if B is empty meaning the test 
>> is not called by jtreg with a preset `LD_LIBRARY_PATH`
>> 
>> Unfortunately we now have to call all tests with a given runtime search path 
>> provided in `LD_LIBRARY_PATH`.
>> So my proposal is to skip this sub test for aix and musl.
>
> Joachim Kern has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   add !windows again and remove @compile

test/jdk/tools/launcher/ExecutionEnvironment.java line 42:

> 40:  *      LD_LIBRARY_PATH if set are not modified in any way.
> 41:  *   3. the correct vm is chosen with -server and -client options
> 42:  *   4. no extra symlink exists on Solaris i.e.

You can remove Solaris, we do not build/test on Solaris for some time .

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PR Review Comment: https://git.openjdk.org/jdk/pull/24055#discussion_r2018277509

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