Bug 1310981 - LinkageError in org.mvel2.ParserConfiguration
LinkageError in org.mvel2.ParserConfiguration
Product: JBoss BPMS Platform 6
Classification: JBoss
Component: BRE (Show other bugs)
Unspecified Unspecified
high Severity unspecified
: ER2
: 6.3.0
Assigned To: Mario Fusco
Tibor Zimanyi
Depends On:
Blocks: 1321281
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Reported: 2016-02-23 01:19 EST by Lyle Wang
Modified: 2016-04-06 06:49 EDT (History)
3 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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: 1321281 (view as bug list)
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Type: Bug
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Description Lyle Wang 2016-02-23 01:19:35 EST
Created attachment 1129610 [details]
Example log showing the error on drools 6.0.3

Description of problem:

The "java.lang.LinkageError" is not captured and rule compilation fails when "Bar.class" exists in classpath and an identifier "bar" is used in the rule. This only happens on case-preserving but case-insensitive systems (Mac or Windows.)

Very similar to "MVEL-43":

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. have a rule using an identifier "bar" in any expression , for example, "abc.bar=Bar.XYZ"
2. package this rule in a war, and dependency Bar.class is packaged in an exploded folder under "WEB-INF/lib/" (Bar.class is not packaged in a jar archive)
3. deploy this war in EAP 6 on Mac machine.

Actual results:
NoClassDefFoundError is wrapped in  java.lang.LinkageError which is not captured, hence rule compilation fails.

Expected results:
no exception :)

Additional info:

This code change captures "Throwable" instead which fixes MVEL-43:

However that's for "org/mvel/ParserContext.java"

For BRMS 6.2 which uses "mvel2-2.2.7.Final-redhat-1", the "LinkageError" still got thrown / un-handled.
Comment 3 Tibor Zimanyi 2016-04-06 06:49:01 EDT
Cannot reproduce this issue. However verifying this. The new mvel with Mario's fix is part of the build.

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