RFR: 8293806: JDK_JAVA_OPTIONS picked up twice if LD_LIBRARY_PATH is set

[Dmitry Samersoff]

On Tue, 27 Sep 2022 06:00:10 GMT, David Holmes <dholmes at openjdk.org> wrote:

> Sorry @dsamersoff but I don't understand how this arises - can you explain in more detail please? I'm not seeing the connection between setting `LD_LIBRARY_PATH` and reading an env var twice. Thanks

Linker read LD_LIBRARY_PATH only once, at the time of program loading, so if for some reason launcher need to update LD_LIBRARY_PATH, it creates a new environment and re-launch it self using execvp(). 

But the launcher is designed so that the decision to re-launch is made after all arguments from all sources have already been processed and copied to the argv array.

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PR: https://git.openjdk.org/jdk/pull/10430