Kotlin Compiler Bug

log.txt

Cause: AFTER mandatory stack transformations: incorrect bytecode
Element is unknownThe root cause was thrown at: MethodVerifier.kt:28
File being compiled at position: (50,5) in /path/to/MyTest.kt
The root cause was thrown at: TransformationMethodVisitor.kt:92
        at org.jetbrains.kotlin.codegen.FunctionCodegen.endVisit(FunctionCodegen.java:1043)
        at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethodBody(FunctionCodegen.java:497)
        at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethod(FunctionCodegen.java:269)
        at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethod(FunctionCodegen.java:185)
        at org.jetbrains.kotlin.codegen.FunctionCodegen.gen(FunctionCodegen.java:156)
        at org.jetbrains.kotlin.codegen.MemberCodegen.genSimpleMember(MemberCodegen.java:197)
        at org.jetbrains.kotlin.codegen.ClassBodyCodegen.generateDeclaration(ClassBodyCodegen.java:166)
        at org.jetbrains.kotlin.codegen.ClassBodyCodegen.generateBody(ClassBodyCodegen.java:86)
        at org.jetbrains.kotlin.codegen.MemberCodegen.generate(MemberCodegen.java:129)
        at org.jetbrains.kotlin.codegen.MemberCodegen.genClassOrObject(MemberCodegen.java:302)
        at org.jetbrains.kotlin.codegen.MemberCodegen.genClassOrObject(MemberCodegen.java:286)
        at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generateClassOrObject(PackageCodegenImpl.java:161)
        at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generateClassesAndObjectsInFile(PackageCodegenImpl.java:86)
        at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generateFile(PackageCodegenImpl.java:119)
        at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generate(PackageCodegenImpl.java:66)
        ... 43 more
...
Cause: AFTER mandatory stack transformations: incorrect bytecode
Element is unknownThe root cause was thrown at: MethodVerifier.kt:28
        at org.jetbrains.kotlin.codegen.TransformationMethodVisitor.visitEnd(TransformationMethodVisitor.kt:92)
        at org.jetbrains.org.objectweb.asm.MethodVisitor.visitEnd(MethodVisitor.java:778)
        at org.jetbrains.kotlin.codegen.FunctionCodegen.endVisit(FunctionCodegen.java:1031)
        ... 57 more
Caused by: java.lang.AssertionError: AFTER mandatory stack transformations: incorrect bytecode
        at org.jetbrains.kotlin.codegen.optimization.MethodVerifier.transform(MethodVerifier.kt:28)
        at org.jetbrains.kotlin.codegen.optimization.transformer.CompositeMethodTransformer.transform(CompositeMethodTransformer.kt:25)
        at org.jetbrains.kotlin.codegen.optimization.OptimizationMethodVisitor.performTransformations(OptimizationMethodVisitor.kt:62)
        at org.jetbrains.kotlin.codegen.TransformationMethodVisitor.visitEnd(TransformationMethodVisitor.kt:70)
        ... 59 more
Caused by: java.lang.RuntimeException: org.jetbrains.org.objectweb.asm.tree.analysis.AnalyzerException: Error at instruction 36: Expected I, but found .
        at org.jetbrains.kotlin.codegen.optimization.transformer.MethodTransformer.runAnalyzer(MethodTransformer.java:34)
        at org.jetbrains.kotlin.codegen.optimization.transformer.MethodTransformer.analyze(MethodTransformer.java:44)
        at org.jetbrains.kotlin.codegen.optimization.MethodVerifier.transform(MethodVerifier.kt:26)
        ... 62 more
Caused by: org.jetbrains.org.objectweb.asm.tree.analysis.AnalyzerException: Error at instruction 36: Expected I, but found .
        at org.jetbrains.org.objectweb.asm.tree.analysis.Analyzer.analyze(Analyzer.java:291)
        at org.jetbrains.kotlin.codegen.optimization.transformer.MethodTransformer.runAnalyzer(MethodTransformer.java:31)
        ... 64 more
Caused by: org.jetbrains.org.objectweb.asm.tree.analysis.AnalyzerException: Expected I, but found .
        at org.jetbrains.org.objectweb.asm.tree.analysis.BasicVerifier.copyOperation(BasicVerifier.java:102)
        at org.jetbrains.org.objectweb.asm.tree.analysis.BasicVerifier.copyOperation(BasicVerifier.java:43)
        at org.jetbrains.org.objectweb.asm.tree.analysis.Frame.execute(Frame.java:288)
        at org.jetbrains.org.objectweb.asm.tree.analysis.Analyzer.analyze(Analyzer.java:187)
        ... 65 more

MyTest.kt

    ...
    @Before      // <-- line 50
    fun setup() {
        MockitoAnnotations.initMocks(this)
        ...
    }
    ...