GetOwner() cause unreal editor crash - c++

Question

I'm new in using c++ and UE.
I tried some simple programming but the editor crash.
#include "NewActorComponent.h"
#include "Runtime/Engine/Classes/GameFramework/Actor.h"
UNewActorComponent::UNewActorComponent()
{
PrimaryComponentTick.bCanEverTick = true;
GetOwner()->GetName();
}
I knew maybe the output is null so it is crashed,but idk how to expect the error without any crash.

Answer 1

It's possible the actor component is created but not initialized or attached to an object. You should gate these kind of checks behind IF statements, or use the assert/check macros.
Also, you may want to use the BeginPlay() function instead of the constructor. BeginPlay requires the component to be registered and initialized so it should have an owner.

Answer 2

GetName();
To find the owner of the component.
Ex: When inserting a component in the chair, a reference to the chair will be returned.
From Unreal Engine API Reference:
UObjectBaseUtility::GetName
Syntax: FString GetName()
Remarks
Returns the name of this object (with no path information)
OK, Follow this steps:
1) File -> New Project -> C++ -> Basic Code -> With Starter Content
2) Inside MinimalDefault Map select one chair and pick Add Component Button.
3) Choose New C++ Component
4) Choose Actor Component Class and click em Next Button
5) In Visual Studio inside NewActorComponent.cpp insert code below in BeginPlay() function
UNewActorComponent::UNewActorComponent()
{
PrimaryComponentTick.bCanEverTick = true;
FString ObjectName = GetOwner()->GetName();
UE_LOG(LogTemp, Warning, TEXT("ObjetctName: %s"), *Objectname);
}
6) Show Log Window in Unreal Engine 4
Log Windows
7) Compile!
8) See Results in Log Window
logwindowresults
Below Complete Code. It Works! Enjoy!
#include "NewActorComponent.h"
#include "Runtime/Engine/Classes/GameFramework/Actor.h"
UNewActorComponent::UNewActorComponent()
{
PrimaryComponentTick.bCanEverTick = true;
}
void UNewActorComponent::BeginPlay()
{
Super::BeginPlay();
FString NameOfObject = GetOwner()->GetName();
UE_LOG(LogTemp, Warning, TEXT("Name is: %s"), *NameOfObject)
}
void UNewActorComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
}