This bit of code bricks my Xiao. Why?

Community
#1

This snippet bricks my Xiao every time, and I have to set it into bootloader mode to recover it. What’s going on? All it does is call a method on one object through a reference. Even if there’s something wrong with this, it shouldn’t brick the thing.

#include <Arduino.h>
#include <Adafruit_NeoPixel.h>
#include <WS2812FX.h>

#define LED_COUNT 40
#define LED_PIN 10

WS2812FX ws2812fx = WS2812FX(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

// ------------------- CLASS Minimal Bricker -------------------
class MinimalBricker {
private:
  WS2812FX *_lightStrip;

public:
  MinimalBricker(WS2812FX lightStrip) {
    _lightStrip = &lightStrip;
  }

  void doService() {
    _lightStrip->service();
  }
};
// ----------------- END CLASS Minimal Bricker -----------------

MinimalBricker minimalBricker = MinimalBricker(ws2812fx);

void setup() {
  ws2812fx.init();
  ws2812fx.setBrightness(50);
  ws2812fx.start();
}

void loop() {
  // ws2812fx.service(); // WORKS JUST FINE
  minimalBricker.doService(); // BRICKS DEVICE
}
#2

Solved problem on my own:

Should be:

class MinimalBricker
{
private:
  WS2812FX *_lightStrip;
public:
  MinimalBricker(WS2812FX* lightStrip) {
	_lightStrip = lightStrip;
  }
  void doService() {
	_lightStrip->service();
  }
};

I was misusing pass-by-reference. Why that bricks the Xiao though, isn’t clear to me.