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Provide a way for derives to know if they were invoked with <code>#[derive_const]</code>

A-macrosArea: All kinds of macros (custom derive, macro_rules!, proc macros, ..)Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)

A-trait-systemArea: Trait systemArea: Trait system

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

F-const_trait_impl`#![feature(const_trait_impl)]``#![feature(const_trait_impl)]`

PG-const-traitsProject group: Const traitsProject group: Const traits

S-blockedStatus: Blocked on something else such as an RFC or other implementation work.Status: Blocked on something else such as an RFC or other implementation work.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

WG-macrosWorking group: MacrosWorking group: Macros

Status: Open.

#118304 In rust-lang/rust;

· jhpratt opened on Nov 26, 2023

Misleading diagnostic when implementing <code>const Trait</code> method

A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)Area: Constant evaluation, covers all const contexts (static, const fn, ...)

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

F-const_trait_impl`#![feature(const_trait_impl)]``#![feature(const_trait_impl)]`

requires-nightlyThis issue requires a nightly compiler in some way.This issue requires a nightly compiler in some way.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#103040 In rust-lang/rust;

· jhpratt opened on Oct 14, 2022