Crash stack isn't symbolicated correctly

I create a simple project to demonstrate C++ code crash symbolication.

The C++ code is crash.cpp:

#include "crash.h"

#include 

int* newPtr() {
  return new int[1];
}

void resetPtr(int** ptr) {
  *ptr = nullptr;
}

void usePtr(int* ptr) {
  int var = *ptr;
  var++;
  *ptr = var;
}

void testCrash() {
  int* ptr = newPtr();
  usePtr(ptr);
  resetPtr(&ptr);
  usePtr(ptr);
  resetPtr(nullptr);
  usePtr(ptr);
}

The Objective-C code calling it is ViewController.mm:

#import "ViewController.h"

#import "crash.h"

@interface ViewController ()

@end

@implementation ViewController {
    int _val;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    // this could be symbolicated correctly
    //ViewController* vc = nil;
    //NSLog(@"%d", vc->_val);

    // this couldn't be symbolicated correctly
    testCrash();
    NSLog(@"test");
}

@end

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   CrashExample                  0x000000010493230c usePtr(int*) + 25356 (crash.cpp:13)
1   CrashExample                  0x000000010493234c testCrash() + 25420 (crash.cpp:24)
2   CrashExample                  0x0000000104932480 -[ViewController viewDidLoad] + 25728 (ViewController.mm:23)
3   UIKitCore                      0x000000018ea0a36c -[UIViewController _sendViewDidLoadWithAppearanceProxyObjectTaggingEnabled] + 104