Debugger Freezes When Inspecting Large Array

[QVQ-awe]

Type: Bug

When debugging a C++ console application in Visual Studio Code, the debugger freezes when attempting to inspect a large array (1,000,000 elements) in the "Variables" panel, even though GDB's print limit is set to 100 elements and VS Code's debug view is configured to display only the first 1,000 elements. This issue causes the debugger to become unresponsive, preventing further debugging.

Extension version: 1.26.3
VS Code version: Code 1.103.2 (6f17636121051a53c88d3e605c491d22af2ba755, 2025-08-20T16:45:34.255Z)
OS version: Windows_NT x64 10.0.26100
Modes:

A/B Experiments

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[QVQ-awe]

there is the code and screenshot

#include <bits/stdc++.h>
#define fo(i, a) for (int i = 0; i < a; i++)
using namespace std;
const int N = 1e6;
int arr[N];

int main()
{
    int n;
    cin >> n;
    fo(i, n) 
        cin >> arr[i];
    return 0;
}

[github-actions]

Thank you for reporting this issue. We’ll let you know if we need more information to investigate it. Additionally, if you're working with GDB/LLDB, please note that the code is open source at https://github.com/microsoft/MIEngine/wiki/Contributing-Code . Your contributions are always welcome and appreciated.