Tracking issue for `-Z randomize-layout`

[dtolnay]

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.

Steps

• Implementation
• Adjust documentation (see instructions on rustc-dev-guide)
• Stabilization PR (see instructions on rustc-dev-guide)

Unresolved Questions

Implementation history

• Feature request: Add -Zrandomize-layout flag to better detect code that rely on unspecified behavior related to memory layout #77316
• MCP: Add the -Z randomize-layout flag compiler-team#457
• Added -Z randomize-layout flag #87868
• Add user seed to -Z randomize-layout #91932
• Added randomized field padding to -Z randomize-layout #97861
• enable -Zrandomize-layout in debug CI builds  #101339
• -Zrandomize-layout harder. Foo<T> != Foo<U> #133088
• Enable a weaker form of -Zrandomize-layout when using debug-assertions #139719

[saethlin]

Should this be part of the implementation history? #97861