Sylvain Dusart created GROOVY-9482:
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Summary: Problem with empty case in switches when not in last
position
Key: GROOVY-9482
URL: https://issues.apache.org/jira/browse/GROOVY-9482
Project: Groovy
Issue Type: Bug
Components: syntax
Affects Versions: 2.5.10
Environment: openjdk version "1.8.0_242" (zulu)
Reporter: Sylvain Dusart
Attachments: testcase.tgz
There seems to be a problem with empty cases for switch with groovy 2.5.10
except when they are in the last position.
The exception is :
{code:java}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
failed:org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
failed:General error during class generation:
org.codehaus.groovy.ast.stmt.ReturnStatement cannot be cast to
org.codehaus.groovy.ast.stmt.BlockStatement
java.lang.ClassCastException: org.codehaus.groovy.ast.stmt.ReturnStatement
cannot be cast to org.codehaus.groovy.ast.stmt.BlockStatement at
org.codehaus.groovy.classgen.FinalVariableAnalyzer.fallsThrough(FinalVariableAnalyzer.java:480)
at
org.codehaus.groovy.classgen.FinalVariableAnalyzer.visitSwitch(FinalVariableAnalyzer.java:344)
at org.codehaus.groovy.ast.stmt.SwitchStatement.visit(SwitchStatement.java:53)
at
org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:86)
at
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:106)
at
org.codehaus.groovy.classgen.FinalVariableAnalyzer.visitBlockStatement(FinalVariableAnalyzer.java:147)
at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:69)
at
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:110)
at
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:121)
at
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:132)
at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1103) at
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:54)
at
org.codehaus.groovy.classgen.Verifier.checkFinalVariables(Verifier.java:263) at
org.codehaus.groovy.classgen.Verifier.visitClass(Verifier.java:258) at
org.codehaus.groovy.control.CompilationUnit$18.call(CompilationUnit.java:811)
at
org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1084)
at
org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:640)
at
org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:618)
at
org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:595)
at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:401) at
groovy.lang.GroovyClassLoader.access$300(GroovyClassLoader.java:89) at
groovy.lang.GroovyClassLoader$5.provide(GroovyClassLoader.java:341) at
groovy.lang.GroovyClassLoader$5.provide(GroovyClassLoader.java:338) at
org.codehaus.groovy.runtime.memoize.ConcurrentCommonCache.getAndPut(ConcurrentCommonCache.java:147)
at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:336) at
groovy.lang.GroovyShell.parseClass(GroovyShell.java:546) at
groovy.lang.GroovyShell.run(GroovyShell.java:375) at
groovy.lang.GroovyShell.run(GroovyShell.java:365) at
groovy.ui.GroovyMain.processOnce(GroovyMain.java:592) at
groovy.ui.GroovyMain.run(GroovyMain.java:336) at
groovy.ui.GroovyMain.access$1400(GroovyMain.java:69) at
groovy.ui.GroovyMain$GroovyCommand.process(GroovyMain.java:295) at
groovy.ui.GroovyMain.processArgs(GroovyMain.java:134) at
groovy.ui.GroovyMain.main(GroovyMain.java:116) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:110) at
org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:128)
1 error {code}
It works with groovy 2.5.9 and 3.0.2.
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