microsoft / microsoft/vscode-cpptools
Wrong name is underlined when trying to assign to a constant
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- Dominant language
- TypeScript
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Description
Type: Bug
If I were to write something like this:
struct {
const int i;
} s;
s.i = 0;
instead of underlining i to give the error like it should, it underlines s, when s isn't constant. If s was constant, this would be the correct behaviour.
Extension version: 1.28.3
VS Code version: Code 1.105.1 (7d842fb85a0275a4a8e4d7e040d2625abbf7f084, 2025-10-14T22:33:36.618Z)
OS version: Linux x64 6.8.0-86-generic
Modes:
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (8 x 2400) |
| GPU Status | 2d_canvas: enabled 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 trees_in_viz: disabled_off video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off webnn: disabled_off |
| Load (avg) | 2, 1, 1 |
| Memory (System) | 15.34GB (9.74GB free) |
| Process Argv | --crash-reporter-id 3cdbf6ce-6d27-475a-ae69-ae7116a9bb80 |
| Screen Reader | no |
| VM | 0% |
| DESKTOP_SESSION | ubuntu |
| XDG_CURRENT_DESKTOP | Unity |
| XDG_SESSION_DESKTOP | ubuntu |
| XDG_SESSION_TYPE | x11 |
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Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the diagnostic in VS Code with the C/C++ extension using the reported struct snippet and versions. Inspect which identifier receives the underline for the assignment to the const member; done means i is underlined while the non-const variable s is not.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, typescript
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100