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Posted to notifications@groovy.apache.org by "Eric Milles (JIRA)" <ji...@apache.org> on 2017/03/08 15:43:37 UTC

[jira] [Created] (GROOVY-8111) Stack overflow between WideningCategories lowestUpperBound and parameterizeLowestUpperBound

Eric Milles created GROOVY-8111:
-----------------------------------

             Summary: Stack overflow between WideningCategories lowestUpperBound and parameterizeLowestUpperBound
                 Key: GROOVY-8111
                 URL: https://issues.apache.org/jira/browse/GROOVY-8111
             Project: Groovy
          Issue Type: Bug
            Reporter: Eric Milles


I have run into this stack overflow error a few times when editing a Groovy file with, for example, a Map with generics specified and the value type has generics as well.

The problem appears in WideningCategories.lowestUpperBound and its callees.

Captured on Groovy 2.4.9:
{code}
java.lang.StackOverflowError
	at org.codehaus.groovy.ast.ClassNode.getText(ClassNode.java:1686)
	at org.codehaus.groovy.ast.ClassNode.equals(ClassNode.java:813)
	at org.codehaus.groovy.ast.ClassNode.equals(ClassNode.java:810)
	at org.codehaus.groovy.ast.ClassNode.declaresInterface(ClassNode.java:1082)
	at org.codehaus.groovy.ast.ClassNode.implementsInterface(ClassNode.java:1060)
	at org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.implementsInterfaceOrIsSubclassOf(StaticTypeCheckingSupport.java:798)
	at org.codehaus.groovy.ast.tools.GenericsUtils.extractSuperClassGenerics(GenericsUtils.java:434)
	at org.codehaus.groovy.ast.tools.GenericsUtils.parameterizeType(GenericsUtils.java:228)
	at org.codehaus.groovy.ast.tools.WideningCategories.findGenericsTypeHolderForClass(WideningCategories.java:269)
	at org.codehaus.groovy.ast.tools.WideningCategories.parameterizeLowestUpperBound(WideningCategories.java:233)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:203)
	at org.codehaus.groovy.ast.tools.WideningCategories.parameterizeLowestUpperBound(WideningCategories.java:250)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:203)
	at org.codehaus.groovy.ast.tools.WideningCategories.parameterizeLowestUpperBound(WideningCategories.java:250)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:203)
	at org.codehaus.groovy.ast.tools.WideningCategories.parameterizeLowestUpperBound(WideningCategories.java:250)
	at org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound(WideningCategories.java:203)
{code}



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