C++ debugging can execute code due to mouse hovering over code

[unpacklo]

Type: Bug

When debugging C++ code it's possible to be sitting at a break point and the mouse hovering over a function can cause it to execute. This can unintentionally break debugging sessions due to unintended mouse movements.

Extension version: 1.22.11
VS Code version: Code 1.95.3 (Universal) (f1a4fb101478ce6ec82fe9627c43efbf9e98c813, 2024-11-13T14:50:04.152Z)
OS version: Darwin x64 24.1.0
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz (16 x 2300)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	3, 3, 3
Memory (System)	32.00GB (0.81GB free)
Process Argv	--crash-reporter-id 8c20af22-84b8-464e-8717-df6dc863ae10
Screen Reader	no
VM	0%

A/B Experiments

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pythonnoceb:30805159
asynctok:30898717
pythonmypyd1:30879173
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pythontbext0:30879054
cppperfnew:31000557
dsvsc020:30976470
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iacca1:31171482
notype1:31157159
5fd0e150:31155592
dwcopilot:31170013
stablechunks:31184530

[unpacklo]

This code can illustrate the bug:

#include <cstdio>

struct incrementer
{
    int i = 0;

    int increment()
    {
        return i++;
    }
};

int main()
{
    incrementer i;
    i.increment(); // Set breakpoint here, then hover mouse over "increment()", watch i.i change value.
    printf("%d\n", i.i);
    i.increment();
    return 0;
}

[sean-mcmanus]

@unpacklo Is this with gdb or lldb?

[unpacklo]

@sean-mcmanus I'm using lldb on macos.

lldb --version tells me:

lldb-1600.0.39.3
Apple Swift version 6.0.2 (swiftlang-6.0.2.1.2 clang-1600.0.26.4)