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big loop is not supported now

See original GitHub issue

If eval a expression like list = []; for (int i = 0; i < 521; i++) { list.add(i) } will cause

Caused by: java.lang.NoSuchMethodException: ASMAccessorImpl_80404262315883800703666.<init>(org.mvel2.compiler.ExecutableStatement)
        at java.lang.Class.getConstructor0(Class.java:3082)
        at java.lang.Class.getConstructor(Class.java:1825)
        at org.mvel2.optimizers.impl.asm.ASMAccessorOptimizer._initializeAccessor(ASMAccessorOptimizer.java:768)
        at org.mvel2.optimizers.impl.asm.ASMAccessorOptimizer.compileAccessor(ASMAccessorOptimizer.java:895)
        ... 20 common frames omitted
2020-05-02 08:41:10 [as-command-execute-daemon] WARN  c.t.a.c.command.klass100.MvelCommand -mvel: failed execute express: list = []; for (int i = 0; i < 521; i++) { list.add(i) }

but eval list = []; for (int i = 0; i < 5; i++) { list.add(i) } will be OK.

Issue Analytics

State:
Created 3 years ago
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

XhinLiangcommented, May 3, 2020

thank you, jugg is deprecated, and arthas-mvel is using official mvel now.

0reactions

MalcolmOddcommented, May 3, 2020

Glad to hear it. OptimizerFactory.setDefaultOptimizer(“reflective”) is a workaround and may have performance drawbacks since it prevents MVEL from switching over to compiled mode when an expression is evaluated repeatedly. Depending on your needs this might be acceptable. Your code base uses a 13 months old copy of mvel (https://github.com/XhinLiang/jugg/commits/master/src/main/java/org/mvel2) so you’re missing fixes like #219 which might be relevant in this case. I suggest closing this issue since it has no actionable item in the main code base.