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/U, -U 'undefine' argument not properly supported #13786

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/U, -U 'undefine' argument not properly supported#13786
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Colengms
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Language Servicebugcompiler supportfixedCheck the Milestone for the release in which the fix is or will be available.
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1.35.1

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@Colengms
Colen Garoutte-Carson (Colengms)
opened on Jul 28, 2025

The 'undefine' (/U and -U) compiler args are not currently supported. Since is argument can be used to undefine even system defines, it would be necessary to keep track the 'undefines' (not just remove them from known defines), so the results of a compiler query can be post-processed to remove them from a configuration.

Activity

  1. Colen Garoutte-Carson (Colengms)
    added this to the 1.27 milestone on Jul 28, 2025
  2. Colen Garoutte-Carson (Colengms)
    self-assigned this
    on Jul 28, 2025
  3. Colen Garoutte-Carson (Colengms)
    added this to cpptoolson Jul 28, 2025
  4. Colen Garoutte-Carson (Colengms)
    added the
    Bug
    issue type on Jul 28, 2025
  5. Colen Garoutte-Carson (Colengms)
    added
    bug
    Language Service
    compiler support
    on Jul 28, 2025
  6. Sean McManus (sean-mcmanus)
    modified the milestones: 1.27, 1.28 on Sep 18, 2025
  7. Sean McManus (sean-mcmanus)
    modified the milestones: 1.28, 1.29 on Oct 9, 2025
  8. Sean McManus (sean-mcmanus)
    modified the milestones: 1.29, 1.30.0 on Dec 4, 2025
  9. Sean McManus (sean-mcmanus)
    modified the milestones: 1.30.0, 1.30 on Dec 12, 2025

  10. 5 remaining items

  11. Sean McManus (sean-mcmanus)
    modified the milestones: 1.32, 1.33 on Apr 29, 2026
  12. Sean McManus (sean-mcmanus)
    modified the milestones: 1.33, 1.34 on Aug 17, 2026
  13. Colen Garoutte-Carson (Colengms)
    moved this from Triage to In progress in cpptoolson Sep 9, 2026
  14. Sean McManus (sean-mcmanus)
    modified the milestones: 1.34, 1.35 on Sep 9, 2026
  15. Colen Garoutte-Carson (Colengms)
    moved this from In progress to Pull Request in cpptoolson Sep 9, 2026
  16. Colen Garoutte-Carson (Colengms)
    moved this from Pull Request to Done in cpptoolson Sep 10, 2026
  17. Colen Garoutte-Carson (Colengms)
    added
    fixedCheck the Milestone for the release in which the fix is or will be available.
    on Sep 10, 2026

  18. sean-mcmanus commented on Sep 14, 2026

    @sean-mcmanus
    Sean McManus (sean-mcmanus)
    on Sep 14, 2026
    Contributor

    Fixed with https://github.com/microsoft/vscode-cpptools/releases/tag/v1.35.1

  19. Sean McManus (sean-mcmanus)
    closed this as completedon Sep 14, 2026
  20. Sean McManus (sean-mcmanus)
    modified the milestones: 1.35, 1.35.1 on Sep 14, 2026
  21. github-actions
    locked and limited conversation to collaborators on Oct 30, 2026
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Language Servicebugcompiler supportfixedCheck the Milestone for the release in which the fix is or will be available.

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  • cpptools
    Status
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