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'rustc' panicked at 'Box<Any>', when const expr evaluation panics #44578

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'rustc' panicked at 'Box<Any>', when const expr evaluation panics#44578
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A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)C-bugCategory: This is a bug.E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added.I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

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@Kixunil
Kixunil
opened on Sep 14, 2017

After seeing this amusing workaround for conditions in const expr, I decided to try it out. Then I was wondering what would happen if I caused index out-of-bounds. That led me to this code.

While it correctly points to the error, it also says "the compiler unexpectedly panicked. this is a bug." and asks for reporting, so I'm reporting here.

Activity

  1. Mark-Simulacrum commented on Sep 17, 2017

    @Mark-Simulacrum
    Mark-Simulacrum
    on Sep 17, 2017
    Member

    cc @eddyb

  2. Mark-Simulacrum
    added
    A-const-fn
    C-bugCategory: This is a bug.
    I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
    on Sep 17, 2017

  3. eddyb commented on Sep 18, 2017

    @eddyb
    eddyb
    on Sep 18, 2017
    Contributor

    Works correctly on beta and nightly, doesn't it?

  4. Kixunil commented on Sep 18, 2017

    @Kixunil
    Kixunil
    on Sep 18, 2017
    ContributorAuthor

    @eddyb I totally forgot to check nightly. Indeed, it's correct there.

  5. eddyb
    added
    E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added.
    on Sep 18, 2017
  6. Mark-Simulacrum
    closed this as completedon Sep 18, 2017
  7. Mark-Simulacrum
    reopened this on Sep 18, 2017
  8. MaloJaffre
    added a commit that references this issue on Oct 4, 2017

    Fix some E-needstest issues.

    7428806
  9. bors
    added a commit that references this issue on Oct 8, 2017

    Auto merge of #45020 - MaloJaffre:needs-test, r=alexcrichton

    ade0b01
  10. bors
    closed this as completedin #45020on Oct 8, 2017
  11. RalfJung
    added
    A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)
    on Dec 1, 2024
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    A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)C-bugCategory: This is a bug.E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added.I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

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