Spring Framework

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spring-framework/spring-core

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Sam Brannen d6a7aefd1d Add comments regarding Java 1.8 byte code level for CGLIB ... Unfortunately, it is not possible to raise the byte code level beyond Java 1.8 for classes generated using CGLIB due to the fact that CGLIB generates STATICHOOK methods which set static final fields outside the initializer method <clinit> (i.e., a static initialization block). Attempting to raise the level to Java 17 (or even Java 9) results in exceptions like the following. Caused by: java.lang.IllegalAccessError: Update to static final field org.example.MyBean$$SpringCGLIB$$0.CGLIB$THREAD_CALLBACKS attempted from a different method (CGLIB$STATICHOOK1) than the initializer method <clinit> at org.example.MyBean$$SpringCGLIB$$0.CGLIB$STATICHOOK1(<generated>) at org.example.MyBean$$SpringCGLIB$$0.<clinit>(<generated>) This commit therefore introduces inline comments pointing out why we stay with Java 1.8 byte code level with CGLIB. See gh-34602		10 months ago
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src	Add comments regarding Java 1.8 byte code level for CGLIB	10 months ago
spring-core.gradle	Revisit compiler configuration in project build	11 months ago