<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/66590>66590</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [lldb][gui] Local variables aren't updated when function goes into recursion
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          kblinichkin
      </td>
    </tr>
</table>

<pre>
    ### Description
For example we have a recursive function like this:
```c++
template <typename T>
T numOfCoinChangesSubProblem(Matrix<T>& mem, const std::vector<T>& coins,
 const T sum, size_t coinIdx) {
    if (sum == 0) {
        mem.at(coinIdx, 0) = 1;
        return 1;
    }

 T first;
    if (coins[coinIdx] > sum)
        first = 0;
 else if (mem.at(coinIdx, sum - coins[coinIdx]) != std::numeric_limits<T>::max())
        first = mem.at(coinIdx, sum - coins[coinIdx]);
    else
        first = numOfCoinChangesSubProblem(mem, coins, sum - coins[coinIdx], coinIdx);

    T second;
    if (coinIdx == 0)
        second = 0;
    else if (mem.at(coinIdx - 1, sum) != std::numeric_limits<T>::max())
        second = mem.at(coinIdx - 1, sum);
    else
        second = numOfCoinChangesSubProblem(mem, coins, sum, coinIdx - 1);

    mem.at(coinIdx, sum) = first + second;
 return mem.at(coinIdx, sum);
}
```

Once we go to the second layer of recursive call and further, the variable `sum` and `coinIdx` remain the same.

### Details
Here we have a first call with `sum=6` and `coinIdx=3`
<img width="1439" alt="Screenshot 2023-09-16 at 19 48 40" src="https://github.com/llvm/llvm-project/assets/10687845/80db924a-b5c7-4470-90b0-3175f4ceaa97">

After that we enter the first recursive call and can see in the call stack that we are in the second call already, but the variables didn't change.
<img width="1439" alt="Screenshot 2023-09-16 at 19 50 24" src="https://github.com/llvm/llvm-project/assets/10687845/4b330c80-416f-41cc-a050-f3f1b04136b0">

The `coins[coinIdx]` variable in this case equals `6` as seen at the next screenshot. Thus the variable `sum` have to be equal to `0` in the second recursion layer.  
<img width="687" alt="Screenshot 2023-09-16 at 19 53 26" src="https://github.com/llvm/llvm-project/assets/10687845/0b768601-d824-4392-8f95-2004d652a0ed">

When quitting **gui** mode and checking variables over the command line, values are as expected.
<img width="228" alt="Screenshot 2023-09-16 at 19 55 32" src="https://github.com/llvm/llvm-project/assets/10687845/4072534e-bb8e-406c-95a5-5a7f42eb0642">

</pre>
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