[GROOVY-8470] dead loop when compiling 'enum in enum without semicolon'

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.13
• Fix Version/s: 3.0.0-alpha-1, 2.6.0-alpha-1, 2.6.0-alpha-2, 2.6.0-alpha-3, 3.0.0-alpha-2, 2.6.0-alpha-4
• Component/s: Compiler
• Assignee: Daniel Sun
• Reporter: Xiaoguang Wang
• Created: 05/Feb/18 03:47
• Updated: 26/Jul/18 04:46
• Resolved: 09/Mar/18 17:03

Description

cat a.groovy

enum EnumA {

    EA(EnumB.EB)   // without a semicolon here, the groovyc enters dead loop

    enum EnumB { EB }
    private EnumA(EnumB enumB) {
    }
}

Run:

groovyc a.groovy

 

It hangs in:

"main" #1 prio=5 os_prio=31 tid=0x00007fe32c001800 nid=0x2403 runnable [0x0000700008b92000]
   java.lang.Thread.State: RUNNABLE
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.enumConstants(GroovyRecognizer.java:6575)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.enumBlock(GroovyRecognizer.java:5472)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.enumDefinition(GroovyRecognizer.java:2127)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.typeDefinitionInternal(GroovyRecognizer.java:1875)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.classField(GroovyRecognizer.java:5961)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.enumConstants(GroovyRecognizer.java:6443)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.enumBlock(GroovyRecognizer.java:5472)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.enumDefinition(GroovyRecognizer.java:2127)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.typeDefinitionInternal(GroovyRecognizer.java:1875)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.statement(GroovyRecognizer.java:1307)
    at org.codehaus.groovy.antlr.parser.GroovyRecognizer.compilationUnit(GroovyRecognizer.java:666)
    at org.codehaus.groovy.antlr.AntlrParserPlugin.transformCSTIntoAST(AntlrParserPlugin.java:133)
    at org.codehaus.groovy.antlr.AntlrParserPlugin.parseCST(AntlrParserPlugin.java:110)
    at org.codehaus.groovy.control.SourceUnit.parse(SourceUnit.java:234)
    at org.codehaus.groovy.control.CompilationUnit$1.call(CompilationUnit.java:168)
    at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:943)
    at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:605)
    at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
    at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
    at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:537)
    at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:61)
    at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:217)
    at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:150)
    at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:180)
    at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:164)
    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:109)
    at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:131)