RFR: 8263632: Improve exception handling of APIs in classLoader.cpp [v4]

[David Holmes]

On Fri, 26 Mar 2021 16:12:54 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

>> You can't use HAS_PENDING_EXCEPTION in create_class_path_entry_or_null without reintroducing THREAD.
>
> After offline discussion with Ioi, we've decided to get rid of the `throw_exception` in `create_class_path_entry()`. This makes the code cleaner. We could also drop the `TRAPS` parameter of a few other related functions.

It is not at all clear to me how you now deal with the error cases without exceptions. How is it detected that ClassLoader::setup_module_search_path failed for example?

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PR: https://git.openjdk.java.net/jdk/pull/3203