microsoft / microsoft/vscode-cpptools

`_FloatXX` types not highlighted properly

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bug Language Service verified
Dominant language
TypeScript
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Description

Type: Bug

  1. Declare a _FloatXX:
_Float128 f;

_Float128 and similar will not be highlighted correctly; the only one that works is _Float16.

Extension version: 2.0.0
VS Code version: Code 1.98.2 (ddc367ed5c8936efe395cffeec279b04ffd7db78, 2025-03-12T13:32:45.399Z)
OS version: Windows_NT x64 10.0.19045
Modes:

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the report in VS Code with _Float16, _Float128, and other _FloatXX declarations, then trace the C syntax-highlighting handling for these type names. Done means _Float128 and the similar types receive the same correct highlighting as _Float16.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
50/100

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