rust/compiler/rustc_mir_transform
bors daebce4247 Auto merge of #130540 - veera-sivarajan:fix-87525, r=estebank
Add a Lint for Pointer to Integer Transmutes in Consts

Fixes #87525

This PR adds a MirLint for pointer to integer transmutes in const functions and associated consts. The implementation closely follows this comment: https://github.com/rust-lang/rust/pull/85769#issuecomment-880969112. More details about the implementation can be found in the comments.

Note: This could break some sound code as mentioned by RalfJung in https://github.com/rust-lang/rust/pull/85769#issuecomment-886491680:

> ... technically const-code could transmute/cast an int to a ptr and then transmute it back and that would be correct -- so the lint will deny some sound code. Does not seem terribly likely though.

References:
1. https://doc.rust-lang.org/std/mem/fn.transmute.html
2. https://doc.rust-lang.org/reference/items/associated-items.html#associated-constants
2024-10-06 02:39:23 +00:00
..
src Auto merge of #130540 - veera-sivarajan:fix-87525, r=estebank 2024-10-06 02:39:23 +00:00
Cargo.toml Simplify match based on the cast result of IntToInt. 2024-08-03 10:55:43 +08:00
messages.ftl Add a Lint for Pointer to Integer Transmutes in Consts 2024-10-05 12:48:02 +00:00