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https://issues.apache.org/jira/browse/GROOVY-10009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-10009:
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Fix Version/s: 3.0.9
> TracingInterceptor throws NullPointerException if arguments contains a null
> argument
> ------------------------------------------------------------------------------------
>
> Key: GROOVY-10009
> URL: https://issues.apache.org/jira/browse/GROOVY-10009
> Project: Groovy
> Issue Type: Bug
> Components: groovy-jdk
> Affects Versions: 3.0.5, 3.0.6
> Environment: Windows 10 Pro
> Reporter: John Yin
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.0-alpha-3, 3.0.9
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> If a method is called with an argument having null value, beforeInvoke throws
> a NullPointerException. Here is an example:
> {quote}class Foo {
> String say(String s) {
> return s
> }
> }
> Foo foo = new Foo()
> def tracer = new TracingInterceptor()
> def proxyMetaClass = ProxyMetaClass.getInstance(Foo.class)
> proxyMetaClass.interceptor = tracer
> foo.metaClass = proxyMetaClass
> def s
> foo.say(s)
> {quote}
> This will cause a crash because s is null. I believe inside writeInfo()
> method of TracingInterceptor, it has something like argument.getClass().
> In the example above, if we change foo.say(s) to foo.say(s as String) it
> would pass the beforeInvoke but still fails afterward. If we actual set s to
> a non-null value, e.g.
> def s = 'Hello'
> the trace would work.
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