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Tracking issue for -Z randomize-layout #106764

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Tracking issue for -Z randomize-layout#106764
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-Zrandomize-layoutUnstable option: Randomize the layout of types.A-CLIArea: Command-line interface (CLI) to the compilerA-layoutArea: Memory layout of typesC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCS-tracking-impl-incompleteStatus: The implementation is incomplete.S-tracking-needs-documentationStatus: Needs documentation.S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

Description

@dtolnay
dtolnay
opened on Jan 12, 2023

This is a tracking issue for the unstable rustc flag -Zrandomize-layout. (rust-lang/compiler-team#457)

About tracking issues

Tracking issues are used to record the overall progress of implementation. They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions. A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature. Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.

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Unresolved Questions

Implementation history

Activity

  1. dtolnay
    added
    T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
    C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFC
    A-layoutArea: Memory layout of types
    on Jan 12, 2023

  2. saethlin commented on Jan 12, 2023

    @saethlin
    saethlin
    on Jan 12, 2023 · Hidden as resolved
  3. workingjubilee
    added
    A-CLIArea: Command-line interface (CLI) to the compiler
    -Zrandomize-layoutUnstable option: Randomize the layout of types.
    on Mar 5, 2023
  4. bors
    added a commit that references this issue on Nov 24, 2024

    Auto merge of rust-lang#133088 - the8472:randomize-me-harder, r=<try>

    0e4cbcd
  5. matthiaskrgr
    added a commit that references this issue on Dec 3, 2024

    Rollup merge of rust-lang#133777 - the8472:document-randomize-layout,…

    d00ed3e
  6. jhpratt
    added a commit that references this issue on Dec 3, 2024

    Rollup merge of rust-lang#133777 - the8472:document-randomize-layout,…

    c541427
  7. matthiaskrgr
    added 2 commits that reference this issue on Dec 3, 2024

    Rollup merge of rust-lang#133777 - the8472:document-randomize-layout,…

    767a5aa

    Rollup merge of rust-lang#133777 - the8472:document-randomize-layout,…

    6323109
  8. rust-timer
    added a commit that references this issue on Dec 3, 2024

    Unrolled build for rust-lang#133777

    649e6bf
  9. workingjubilee
    added a commit that references this issue on Jan 10, 2025

    Rollup merge of rust-lang#133088 - the8472:randomize-me-harder, r=wor…

    85ff229
  10. matthiaskrgr
    added a commit that references this issue on Jan 10, 2025

    Rollup merge of rust-lang#133088 - the8472:randomize-me-harder, r=wor…

    eaf4206
  11. rust-timer
    added a commit that references this issue on Jan 10, 2025

    Unrolled build for rust-lang#133088

    96cd89f
  12. jieyouxu
    added
    S-tracking-impl-incompleteStatus: The implementation is incomplete.
    S-tracking-needs-documentationStatus: Needs documentation.
    S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.
    on Mar 23, 2025

  13. jethrogb commented on Jan 15, 2026

    @jethrogb
    jethrogb
    on Jan 15, 2026
    Contributor

    When testing std itself, std is compiled twice: once cfg(not(test)) as a dependency of test and once cfg(test) as the crate-under-test. Are both of these compilations subject to different randomization? See #150131 for further discussion

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    -Zrandomize-layoutUnstable option: Randomize the layout of types.A-CLIArea: Command-line interface (CLI) to the compilerA-layoutArea: Memory layout of typesC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCS-tracking-impl-incompleteStatus: The implementation is incomplete.S-tracking-needs-documentationStatus: Needs documentation.S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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