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https://issues.apache.org/jira/browse/GROOVY-12303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18108360#comment-18108360
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ASF GitHub Bot commented on GROOVY-12303:
-----------------------------------------
daniellansun opened a new pull request, #2834:
URL: https://github.com/apache/groovy/pull/2834
https://issues.apache.org/jira/browse/GROOVY-12303
> ClassNodeResolver: NoClassDefFoundError during class-loader lookup aborts
> resolution
> ------------------------------------------------------------------------------------
>
> Key: GROOVY-12303
> URL: https://issues.apache.org/jira/browse/GROOVY-12303
> Project: Groovy
> Issue Type: Bug
> Reporter: Daniel Sun
> Priority: Major
>
> When class-loader lookup is used ({{{}asmResolving{}}} off, or the type
> exists only in memory), {{ClassNodeResolver}} calls
> {{{}GroovyClassLoader.loadClass{}}}. If the requested class *exists* but
> cannot be linked (missing superclass or interface), the JVM throws
> {{{}NoClassDefFoundError{}}}.
> That error used to escape resolution. Compilation aborted with an {{Error}}
> that named the {*}missing dependency{*}, not the type being resolved.
> {{resolveName}} could also cache the name as a miss ({{{}NO_CLASS{}}}), so a
> later successful compile of the dependency would not be retried.
> A TODO in {{findByClassLoading}} has noted this since the 2012 split out of
> {{{}ResolveVisitor{}}}.
> h3. Expected
> * If bytecode for the requested name is still on the class path, decompile
> it (ASM does not link) and continue.
> * Else if a groovy source of the same name is available, add it to the
> compilation queue.
> * Else if a {{.class}} resource exists for that path but declares a
> different binary name (JVM {{defineClass}} name check; also case-insensitive
> filesystems), treat the lookup as a miss. Detect this from the bytecode name,
> not from {{NoClassDefFoundError}} text (HotSpot's {{wrong name}} phrase is
> English-only; OpenJ9 does not use it).
> * Otherwise rethrow {{NoClassDefFoundError}} with the looked-up name in the
> message, and do not cache {{{}NO_CLASS{}}}.
> h3. Actual
> {{NoClassDefFoundError}} propagated out of
> {{{}ClassNodeResolver.findByClassLoading{}}}.
> h3. Reproducer
> Put {{HasDep.class}} (extends a type that is not loadable) on the class path,
> disable ASM resolving, and compile:
> {code:groovy}
> HasDep x = null
> {code}
> This fails with {{NoClassDefFoundError}} for the missing super-type instead
> of resolving {{{}HasDep{}}}.
>
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