mockk: Bug: StackOverflowError in case of complex annotation checks involving HashMap calls

Expected Behavior

Class should be mocked w/o errors

Current Behavior

Stackoverflow Exception stops execution

Failure Information (for bugs)

I try to mockk a class which has a default ctor with several interfaces. The ‘to be mocked’ class itself is a Spring Component (annotated), the interfaces for the ctor are Spring Repositories (annotated). Running the tests produces the mentioned StackOverflowError. Commenting out the mockk<> removes the error.

Steps to Reproduce

Project with Mockk (1.9.3), Spring Boot(2.1.6)/Framework(5.1.8), Spring Mongo(2.1.9) and Junit (4.12).

See code below.

Context

Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.

• MockK version: 1.9.3
• OS: Windows 10 1903
• Kotlin version: 1.3.41
• JDK version: 1.8
• JUnit version: 4.12
• Type of test: unit test

Failure Logs

Stack trace

Exception in thread "main" java.lang.StackOverflowError
	at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
	at io.mockk.proxy.jvm.dispatcher.JvmMockKDispatcher.get(JvmMockKDispatcher.java:16)
	at java.lang.Object.hashCode(Object.java:119)
	at java.util.HashMap.hash(HashMap.java:339)
	at java.util.HashMap.get(HashMap.java:557)
	at sun.reflect.Reflection.filterMethods(Reflection.java:291)
	at java.lang.Class.getMethodHelper(Class.java:1261)
	at java.lang.Class.getMethod(Class.java:1187)
	at java.lang.Object.hashCode(Object.java:119)
	at java.util.HashMap.hash(HashMap.java:339)
	at java.util.HashMap.get(HashMap.java:557)
	at sun.reflect.Reflection.filterMethods(Reflection.java:291)
	at java.lang.Class.getMethodHelper(Class.java:1261)
	at java.lang.Class.getMethod(Class.java:1187)
---- lines repeat a lot -----
        at java.lang.Object.hashCode(Object.java:119)
	at java.util.HashMap.hash(HashMap.java:339)
	at java.util.LinkedHashMap.get(LinkedHashMap.java:440)
	at java.lang.Class.getAnnotation(Class.java:2181)
	at java.lang.Class.isAnnotationPresent(Class.java:2589)
	at org.junit.runner.notification.RunNotifier.wrapIfNotThreadSafe(RunNotifier.java:50)
	at org.junit.runner.notification.RunNotifier.removeListener(RunNotifier.java:42)
	at org.junit.runner.JUnitCore.removeListener(JUnitCore.java:161)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:140)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Exception in thread "Thread-5" java.lang.StackOverflowError
// -----------------------[ YOUR STACK TRACE ENDS HERE ] -----------------------

Minimal reproducible code (the gist of this issue)

// -----------------------[ GRADLE DEFINITIONS ] -----------------------
dependencies {
    implementation(kotlin("stdlib-jdk8"))
    implementation(kotlin("reflect"))
    implementation("org.springframework.boot:spring-boot-starter:2.1.6.RELEASE")
    implementation("org.springframework.boot:spring-boot-starter-data-mongodb:2.1.9.RELEASE")
    
    testImplementation("io.mockk:mockk:1.9.3")
    testImplementation(kotlin("test"))
    testImplementation(kotlin("test-junit"))

    testImplementation("org.springframework.boot:spring-boot-starter-test:2.1.6.RELEASE")
    testImplementation("junit:junit:4.12")
}
// -----------------------[ YOUR CODE STARTS HERE ] -----------------------
package io.mockk.gh

import io.mockk.mockk

import org.junit.Test
import org.springframework.beans.factory.annotation.Value
import org.springframework.data.mongodb.repository.MongoRepository
import org.springframework.stereotype.Component
import org.springframework.stereotype.Repository

interface AnotherInterface1
interface AnotherInterface2

class PersistencyClass1
class PersistencyClass2

@Repository
interface Repo1 : MongoRepository<PersistencyClass1, String>, AnotherInterface1

@Repository
interface Repo2 : MongoRepository<PersistencyClass2, String>, AnotherInterface2

@Component
class ToBeMocked(
        private val repo1: Repo1,
        private val repo2: Repo2,
        @Value("\${number:1000}") private val someNumber: Long)

class MockkTest {
    private val mockedObject = mockk<ToBeMocked>() //here it happens

    @Test
    fun dummyTst() {
        //no code needed to reproduce
    }
}
// -----------------------[ YOUR CODE ENDS HERE ] -----------------------