> Since the impact of this bug can be big, and the fix is simple and low risk
> (just avoids doing optimizations), I'd like to put this into JDK 19 before
> RDP2 (Jul 21).
>
> CDS cannot handle Lambda proxy classes that are generated in the
> useImplMethodHandle mode. This could happen with classfiles generated by JDK
> 8 or JDK 11 that access protected methods in a base class from a different
> package. E.g.,
>
>
> class pkg1.Base {
> protected void doit(String s) {
> System.out.println(s);
> }
> }
> class pkg2.Child extends pkg1.Base {
> void test() {
> Optional<String> opt = Optional.of("foo");
> opt.ifPresent(this::doit);
> }
> }
>
>
> More details of useImplMethodHandle can be found here:
> https://github.com/openjdk/jdk/blob/522b65743ca10fcba0a27d25b8fa11319999e228/src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java#L183-L191
>
> More details about the condition that triggers the error can be found in the
> test file Child.jcod.
Ioi Lam has updated the pull request incrementally with one additional commit
since the last revision:
@calvinccheung comments: fixed typo and removed unnecessary imports
-------------
Changes:
- all: https://git.openjdk.org/jdk19/pull/146/files
- new: https://git.openjdk.org/jdk19/pull/146/files/7122e367..6736b66b
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk19&pr=146&range=02
- incr: https://webrevs.openjdk.org/?repo=jdk19&pr=146&range=01-02
Stats: 3 lines in 2 files changed: 0 ins; 2 del; 1 mod
Patch: https://git.openjdk.org/jdk19/pull/146.diff
Fetch: git fetch https://git.openjdk.org/jdk19 pull/146/head:pull/146
PR: https://git.openjdk.org/jdk19/pull/146
