[jdk18] RFR: 8277964: ClassCastException with no stack trace is thrown with -Xcomp in method handle invocation [v2]
Vladimir Kozlov
kvn at openjdk.java.net
Wed Dec 15 17:56:23 UTC 2021
> A proper fix for this is to use the catchException combination. However, that introduces significant cold startup performance regression. JDK-8278447 tracks the work to address the performance regression using catchException and asSpreader combinator. It may require significant work and refactoring which is risky for JDK 18.
>
> It is proposed to implement a workaround in C2 to white list the relevant methods (all methods in sun.invoke.util.ValueConversions class) not to omit stack trace when exception is thrown in them.
>
> Added new regression test. Tested tier1-3.
Vladimir Kozlov has updated the pull request incrementally with one additional commit since the last revision:
Removed boot classloader check
-------------
Changes:
- all: https://git.openjdk.java.net/jdk18/pull/27/files
- new: https://git.openjdk.java.net/jdk18/pull/27/files/3c23350d..5b6805b6
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk18&pr=27&range=01
- incr: https://webrevs.openjdk.java.net/?repo=jdk18&pr=27&range=00-01
Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod
Patch: https://git.openjdk.java.net/jdk18/pull/27.diff
Fetch: git fetch https://git.openjdk.java.net/jdk18 pull/27/head:pull/27
PR: https://git.openjdk.java.net/jdk18/pull/27
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