<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/132177>132177</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [lldb] breakpoint condition always returns true for aggregate types
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          k4lizen
      </td>
    </tr>
</table>

<pre>
    This call
https://github.com/llvm/llvm-project/blob/main/lldb/source/Breakpoint/BreakpointLocation.cpp#L310
extracts the bytes of the result here
https://github.com/llvm/llvm-project/blob/01f04252b6711e281d9569172302ec20789e9bbe/lldb/source/Core/Value.cpp#L605
but the `GetValueAsScalar` call bails
https://github.com/llvm/llvm-project/blob/01f04252b6711e281d9569172302ec20789e9bbe/lldb/source/Core/Value.cpp#L608
when the result is an aggregate type
https://github.com/llvm/llvm-project/blob/main/lldb/source/Symbol/CompilerType.cpp#L1102

so in the end `Scalar &Value::ResolveValue` ends up returning a **host pointer** to process data which has been copied to the host. And thus, this always returns true
https://github.com/llvm/llvm-project/blob/01f04252b6711e281d9569172302ec20789e9bbe/lldb/source/ValueObject/ValueObject.cpp#L367

This whole sequence is a bit weird imo, but the end result is that if a user puts a struct/class/array as the condition the breakpoint will always break. This is probably not what the user intends, and instead an error should be thrown.

```cpp
#include <iostream>

struct Empty { };

int main() {
 Empty emp;
    std::cout << "break\n";
    return 0;
}
// breakpoint set -f main.cpp -l 7 --condition "emp"
```


</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzMVUuP4zYT_DXUpTEG1dTDPuigmVl_lwU-ILvInZTaFrM0qfAxjvPrA1KeR4LNIdhDAhgwSDbVVdVVkgxBny3RwNpH1j5XMsXF-eFbY_TvZCvl5tvwddEBJmkM4-MS4xqYGBkeGR7POi5J7SZ3YXg05uX172H17heaIsOjMk4xPF6ktuVwzqvgkp-I4fHRk_y2Om3jnxaf3SSjdnY3rStD8VnUnPGRfoteTjFAXAjULVIAdyoLTyGZCAt5-gGMvD7xBltUXV_XhPt6PrTdoe5RcKQJeb8_0EEp-g6PJ-fz38_SJHoF3fGW8VGlWCCyjv-PYikYw5dJGulZx4usoKQ24b8EfM_4eF3IfhRXB5AW5Pns6SwjQbytPyL23xjiy-2inCnALqs25L_e1jdgdc2R8ZHxMTjQGzqyc9Z2UxQYdoVKBiTGnyg480LbTsdzbYC0gqeYvNX2DBIYjgzHxYUIxXrktx2IDlbvJgoBZhklXBc9LbDIAIrIwuRWTXOuyijy_R2Mdoa4pMDwCWIOjTRXeQv3fgGiT_-SP4sE_1f3531YvSWs6zdlS9ivizMEgX5NZCcqowelI1xJ-xn0xWWGr87OE3j3SFxkBH0CCSmQhzXFfDlEn0rrycgQGB6l9_IGcsvy5Oysc963ZL-9BuCqjXkVsWzvoODTIc9GSWVuYF2Ea26a75aeeYp2LlOQdgZtQyQ5Z_eS985DWFwyMyiCuHh3tbuNOev49suS8JGh0HYyaSZg4km7ED3JCxOf7g4sjODTZY03YP0jsP6ZicftMGPfDL5neMjHjI_3WrqsWx0AQIjzZtXJpZj7MPEEDLGQZe2TZYjv1ZuPgN_79M8FZjbRR9ECRXg4lf55uvBgoIeHh3eRGWIGgfiR9Aa8mgcxH8RBVjTUfYNN12LTVstAvZynad-TaBo5N2JuTj2f9tS1Ys97Xld6QI4tF8hrzntsdl1HXAipDkoKgd2eNZwuUptdNvfO-XOlQ0g01ALrvq-MVGRC-QwhWrpCOc0g2-fKDyURKp0Da7jRIYb3x0QdTfl-FdO3zx-1eCf9nSjCyfm_vNBClbwZ_nFAC9Zs6zuZlwH_CAAA__-Jw1wY">