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multi-emit fsi debug -- watch variables don't work #14572

Closed
Bug
#19921
Closed
multi-emit fsi debug -- watch variables don't work#14572
Bug
#19921
Labels
Area-VS-FSIVS window and commands for F# InteractiveBugImpact-Medium(Internal MS Team use only) Describes an issue with moderate impact on existing code.

Description

@KevinRansom
KevinRansom
opened on Jan 9, 2023

In this session there are four sperate submissions, all sent in one go by using Alt+A select all then Debug in Fsi from the context menu. Note that locals and Autos are empty .. and the watch window claims x, y and z do not exist.

image

This happens because each section of code is separated by ;; and executed in a single submission.

Expected: All submitted code to be compiled and then executed.

Note: This behavior requires this PR: #14537

Activity

  1. KevinRansom
    added
    Bug
    Needs-Triage
    on Jan 9, 2023
  2. github-actions
    added this to the Backlog milestone on Jan 9, 2023
  3. vzarytovskii
    added this to F# Compiler and Toolingon Jan 9, 2023
  4. github-project-automation
    moved this to Not Planned in F# Compiler and Toolingon Jan 9, 2023
  5. vzarytovskii
    modified the milestones: Backlog, January-2023 on Jan 9, 2023
  6. vzarytovskii
    assigned
    KevinRansom
    on Jan 9, 2023

  7. KevinRansom commented on Jan 10, 2023

    @KevinRansom
    KevinRansom
    on Jan 10, 2023
    ContributorAuthor

    Harrumpph!!! VS2019 did the same:
    image

  8. 0101
    added
    Area-VS-FSIVS window and commands for F# Interactive
    Impact-Medium(Internal MS Team use only) Describes an issue with moderate impact on existing code.
    and removed
    Needs-Triage
    on Jan 16, 2023
  9. vzarytovskii
    modified the milestones: January-2023, February-2023 on Feb 3, 2023
  10. T-Gro
    moved this from Not Planned to In Progress in F# Compiler and Toolingon Feb 6, 2023
  11. vzarytovskii
    modified the milestones: February-2023, March-2023 on Mar 3, 2023
  12. vzarytovskii
    modified the milestones: March-2023, April-20203 on Apr 3, 2023
  13. vzarytovskii
    removed this from the April-2023 milestone on May 4, 2023
  14. KevinRansom
    removed their assignment
    on Jun 9, 2023

  15. majocha commented on Jan 5, 2024

    @majocha
    majocha
    on Jan 5, 2024
    Contributor

    I tried to look what the Roslyn Expression Evaluator is receiving when debugging F#.

    Debugging a net8 console app:

    image

    1. Module instance Unoptimized

    2. Everything works fine.

    Same code, but Debug in Interactive:

    image

    1. Optimized, this is regardless of optimize flag in F# Tools settings.

    2. Next thing that happens is an assertion fail in MetadataDecoder.cs:

    image

  16. vzarytovskii commented on Jan 5, 2024

    @vzarytovskii
    vzarytovskii
    on Jan 5, 2024
    Member

    Hm, wondering why. I'll try not forgetting to look at it next week

  17. rgbav commented on Jun 5, 2024

    @rgbav
    rgbav
    on Jun 5, 2024

    Any updates on this issue?

  18. T-Gro
    added a commit that references this issue on Jun 9, 2026

    docs: add PR link to release notes entry (#14572)

    518a5c7
  19. T-Gro
    closed this as completedin #19921on Jul 3, 2026
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