RFR: 7903877: jextract exception handling in downcall wrappers

[Jorn Vernee]

On Wed, 23 Apr 2025 16:27:10 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

> Can I please get a review for this patch to improve the exception handling in downcall wrappers, if the exception is reachable then throwing an exception is better than catching an exception and turning them into an `AssertionError`.
> 
> TIA

test/jtreg/generator/reachableException/TestReachableException.java line 106:

> 104:             Class<?> exceptionClass = future.get(5, TimeUnit.SECONDS);
> 105:             assertEquals(WrongThreadException.class, exceptionClass,
> 106:                     "Exception should be WrongThreadException, not wrapped in AssertionError");

Isn't this already checked by `testWrongThreadAccess`?

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PR Review Comment: https://git.openjdk.org/jextract/pull/282#discussion_r2063661539