[GROOVY-6455] @CompileStatic and @Delegate with generics causes compilation failure

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.9, 2.2.1
• Fix Version/s: 2.2.2
• Component/s: Static compilation
• Assignee: Jochen Theodorou
• Reporter: Adam Brown
• Created: 27/Nov/13 11:56
• Updated: 15/Oct/15 18:19
• Resolved: 01/Dec/13 07:59

Description

@groovy.transform.CompileStatic
class IntList {
	@Delegate List<Integer> delegate
}

compiling this code yields the following compilation error.

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
General error during class generation: Internal compiler error while compiling /Users/abrown/tmp/groovy/test.groovy
Method: MethodNode@1827580455[boolean add(java.lang.Object)]
Line -1, expecting casting to boolean but operand stack is empty

java.lang.ArrayIndexOutOfBoundsException: Internal compiler error while compiling /Users/abrown/tmp/groovy/test.groovy
Method: MethodNode@1827580455[boolean add(java.lang.Object)]
Line -1, expecting casting to boolean but operand stack is empty
	at org.codehaus.groovy.classgen.asm.OperandStack.doConvertAndCast(OperandStack.java:327)
	at org.codehaus.groovy.classgen.asm.OperandStack.doGroovyCast(OperandStack.java:294)
	at org.codehaus.groovy.classgen.asm.StatementWriter.writeReturn(StatementWriter.java:584)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitReturnStatement(AsmClassGenerator.java:543)
	at org.codehaus.groovy.ast.stmt.ReturnStatement.visit(ReturnStatement.java:47)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:101)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:112)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitStdMethod(AsmClassGenerator.java:357)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:314)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:123)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethod(AsmClassGenerator.java:434)
	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1055)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:50)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:177)
	at org.codehaus.groovy.control.CompilationUnit$15.call(CompilationUnit.java:794)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1036)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:572)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:550)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:527)
	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:279)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:258)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:244)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:185)
	at groovy.lang.GroovyShell$2.run(GroovyShell.java:206)
	at groovy.lang.GroovyShell$2.run(GroovyShell.java:204)
	at java.security.AccessController.doPrivileged(Native Method)
	at groovy.lang.GroovyShell.run(GroovyShell.java:204)
	at groovy.lang.GroovyShell.run(GroovyShell.java:150)
	at groovy.ui.GroovyMain.processOnce(GroovyMain.java:588)
	at groovy.ui.GroovyMain.run(GroovyMain.java:375)
	at groovy.ui.GroovyMain.process(GroovyMain.java:361)
	at groovy.ui.GroovyMain.processArgs(GroovyMain.java:120)
	at groovy.ui.GroovyMain.main(GroovyMain.java:100)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:106)
	at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:128)

1 error

Without the @CompileStatic annotation, the code compiles and works correctly. Additionally, using the raw type (ie: List, in this case), also compiles successfully and works. I also tried this with other generic types (Map, Collection, etc) and it produces similar compilation errors, but for different methods.

Lastly, the following code works, where the generic type parameter comes from the class declaring the @Delegate field

@groovy.transform.CompileStatic
class TList<T> {
	@Delegate Collection<T> delegate
}