[GROOVY-7041] CompileStatic with a spread operator in a boolean expression causes compiler error

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.6
• Fix Version/s: 2.3.8
• Component/s: Compiler, Static compilation
• Assignee: Cédric Champeau
• Reporter: Marek Parfianowicz
• Created: 26/Aug/14 08:20
• Updated: 17/Dec/14 13:25
• Resolved: 26/Sep/14 07:57

Description

When class is annotated with the CompileStatic and a spread operator is a leaf of a boolean expression, then compilation fails with a message:

Error:Groovyc: BUG! exception in phase 'class generation' in source unit 'C:\A.groovy' operand stack contains 2 elements, but we expected only 0

Code sample:

import groovy.transform.CompileStatic

@CompileStatic
class A {
    A() {
        List<String> myList = [ ]
        if (myList*.isEmpty().any() && true) {
            println 'hello'
        }
    }
}

Error:Groovyc: BUG! exception in phase 'class generation' in source unit 'C:\A.groovy' operand stack contains 2 elements, but we expected only 0
	at org.codehaus.groovy.classgen.asm.OperandStack.castToBool(OperandStack.java:110)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitBooleanExpression(AsmClassGenerator.java:743)
	at org.codehaus.groovy.ast.expr.BooleanExpression.visit(BooleanExpression.java:40)
	at org.codehaus.groovy.classgen.asm.StatementWriter.writeIfElse(StatementWriter.java:279)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitIfElse(AsmClassGenerator.java:572)
	at org.codehaus.groovy.ast.stmt.IfStatement.visit(IfStatement.java:41)
	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:556)
	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:420)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:377)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructor(ClassCodeVisitorSupport.java:119)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructor(AsmClassGenerator.java:492)
	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1059)
	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:50)
	at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:231)
	at org.codehaus.groovy.control.CompilationUnit$16.call(CompilationUnit.java:805)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1047)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:583)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:561)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:538)
	at org.jetbrains.groovy.compiler.rt.GroovyCompilerWrapper.compile(GroovyCompilerWrapper.java:54)
	at org.jetbrains.groovy.compiler.rt.DependentGroovycRunner.runGroovyc(DependentGroovycRunner.java:87)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.jetbrains.groovy.compiler.rt.GroovycRunner.main(GroovycRunner.java:100)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:121)