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Posted to notifications@groovy.apache.org by "Daniel Sun (JIRA)" <ji...@apache.org> on 2018/05/28 04:38:00 UTC
[jira] [Assigned] (GROOVY-8609) Fails to compile when upper bound
has generics
[ https://issues.apache.org/jira/browse/GROOVY-8609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Sun reassigned GROOVY-8609:
----------------------------------
Assignee: Daniel Sun
> Fails to compile when upper bound has generics
> ----------------------------------------------
>
> Key: GROOVY-8609
> URL: https://issues.apache.org/jira/browse/GROOVY-8609
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation, Static Type Checker
> Affects Versions: 2.6.0-alpha-3, 3.0.0-alpha-2, 2.5.0
> Reporter: Daniel Sun
> Assignee: Daniel Sun
> Priority: Major
>
> Fails to compile the following code:
> {code:java}
> @groovy.transform.CompileStatic
> public class A<T extends List<E>, E extends Map<String, Integer>> {
> E getFirstRecord(T recordList) {
> return recordList.get(0);
> }
> }
> {code}
> *Error messages:*
> {code:java}
> BUG! exception in phase 'instruction selection' in source unit 'ConsoleScript0' Expected earlier checking to detect generics parameter arity mismatch
> Expected: java.util.Map<K,V>
> Supplied: java.util.Map<E>
> at org.codehaus.groovy.ast.tools.GenericsUtils.extractPlaceholders(GenericsUtils.java:169)
> at org.codehaus.groovy.ast.tools.GenericsUtils.extractPlaceholders(GenericsUtils.java:142)
> at org.codehaus.groovy.ast.GenericsType$GenericsTypeMatcher.compareGenericsWithBound(GenericsType.java:375)
> at org.codehaus.groovy.ast.GenericsType$GenericsTypeMatcher.checkGenerics(GenericsType.java:307)
> at org.codehaus.groovy.ast.GenericsType$GenericsTypeMatcher.matches(GenericsType.java:276)
> at org.codehaus.groovy.ast.GenericsType.isCompatibleWith(GenericsType.java:198)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.checkTypeGenerics(StaticTypeCheckingVisitor.java:1174)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.checkReturnType(StaticTypeCheckingVisitor.java:2076)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor$1.returnStatementAdded(StaticTypeCheckingVisitor.java:309)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitReturnStatement(StaticTypeCheckingVisitor.java:2026)
> at org.codehaus.groovy.ast.stmt.ReturnStatement.visit(ReturnStatement.java:49)
> {code}
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