[GROOVY-5586] @Canonical class causes compile-time NPE under @StaticCompilation

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.1
• Component/s: Static compilation
• Environment: Ubuntu 12.04, Oracle JVM 1.7.0_05-b05
• Assignee: Cédric Champeau
• Reporter: Steven Ruppert
• Created: 11/Jul/12 10:45
• Updated: 26/Jul/12 16:49
• Resolved: 12/Jul/12 14:47

Description

import groovy.transform.*
@CompileStatic
class CanonicalStaticTest extends GroovyTestCase {
  @Canonical class Thing {
    String stuff
  }

  void testCanonical() {
    def thing = new Thing()
  }
}

fails to compile with the message:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
General error during class generation: NPE while processing CanonicalStaticTest.groovy

groovy.lang.GroovyRuntimeException: NPE while processing CanonicalStaticTest.groovy
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:199)
	at org.codehaus.groovy.control.CompilationUnit$14.call(CompilationUnit.java:783)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1024)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:562)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:540)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:517)
	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:283)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:260)
	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:557)
	at groovy.ui.GroovyMain.run(GroovyMain.java:344)
	at groovy.ui.GroovyMain.process(GroovyMain.java:330)
	at groovy.ui.GroovyMain.processArgs(GroovyMain.java:119)
	at groovy.ui.GroovyMain.main(GroovyMain.java:99)
	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:601)
	at org.codehaus.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:106)
	at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:128)
Caused by: java.lang.NullPointerException
	at org.codehaus.groovy.classgen.asm.BytecodeHelper.getTypeDescription(BytecodeHelper.java:163)
	at org.codehaus.groovy.classgen.asm.BytecodeHelper.getTypeDescription(BytecodeHelper.java:126)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitAttributeOrProperty(AsmClassGenerator.java:1013)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitPropertyExpression(AsmClassGenerator.java:1052)
	at org.codehaus.groovy.ast.expr.PropertyExpression.visit(PropertyExpression.java:55)
	at org.codehaus.groovy.classgen.asm.InvocationWriter.writeDirectMethodCall(InvocationWriter.java:115)
	at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.writeDirectMethodCall(StaticInvocationWriter.java:188)
	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:221)
	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:76)
	at org.codehaus.groovy.classgen.asm.sc.StaticInvocationWriter.makeCall(StaticInvocationWriter.java:383)
	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeInvokeMethodCall(InvocationWriter.java:60)
	at org.codehaus.groovy.classgen.asm.InvocationWriter.writeInvokeMethod(InvocationWriter.java:334)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethodCallExpression(AsmClassGenerator.java:649)
	at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:67)
	at org.codehaus.groovy.classgen.asm.StatementWriter.writeExpressionStatement(StatementWriter.java:604)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitExpressionStatement(AsmClassGenerator.java:510)
	at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:40)
	at org.codehaus.groovy.classgen.asm.StatementWriter.writeBlockStatement(StatementWriter.java:81)
	at org.codehaus.groovy.classgen.asm.sc.StaticTypesStatementWriter.writeBlockStatement(StaticTypesStatementWriter.java:49)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitBlockStatement(AsmClassGenerator.java:456)
	at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:69)
	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:320)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:277)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:123)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethod(AsmClassGenerator.java:397)
	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1056)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:50)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:181)
	... 25 more

1 error