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Check vtable validity when explicitly creating wide pointer #3738

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celinval opened this issue Nov 25, 2024 · 0 comments
Open

Check vtable validity when explicitly creating wide pointer #3738

celinval opened this issue Nov 25, 2024 · 0 comments
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[C] Feature / Enhancement A new feature request or enhancement to an existing feature. [E] Unsupported UB Undefined behavior that Kani does not detect

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@celinval
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Requested feature: Ensure that users do not incorrectly generate invalid vtable data.
Use case: Detect UB due to invalid wide pointer when using APIs such as from_raw_parts.
Link to relevant documentation (Rust reference, Nomicon, RFC):

  • dyn Trait metadata must be a pointer to a compiler-generated vtable for Trait. (For raw pointers, this requirement remains a subject of some debate. [ref]
@celinval celinval added [C] Feature / Enhancement A new feature request or enhancement to an existing feature. [E] Unsupported UB Undefined behavior that Kani does not detect labels Nov 25, 2024
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[C] Feature / Enhancement A new feature request or enhancement to an existing feature. [E] Unsupported UB Undefined behavior that Kani does not detect
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