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MIR body serialization may be a bottleneck

A-incr-compArea: Incremental compilationArea: Incremental compilation

A-metadataArea: Crate metadataArea: Crate metadata

A-MIRArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.htmlArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html

A-mir-optArea: MIR optimizationsArea: MIR optimizations

A-mir-opt-inliningArea: MIR inliningArea: MIR inlining

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

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.

#80536 In rust-lang/rust;

· oli-obk opened on Dec 30, 2020

· Updated on Feb 14, 2025

Types and specifically "mentioned items" take up a lot of space in Rust metadata files

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

A-metadataArea: Crate metadataArea: Crate metadata

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-heavyIssue: Problems and improvements with respect to binary size of generated code.Issue: Problems and improvements with respect to binary size of generated code.

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.

#122936 In rust-lang/rust;

· RalfJung opened on Mar 23, 2024

· Updated on Feb 14, 2025

ICE: GCE: should never serialize an ErrorGuaranteed

A-metadataArea: Crate metadataArea: Crate metadata

C-bugCategory: This is a bug.Category: This is a bug.

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

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

P-lowLow priorityLow priority

requires-incomplete-featuresThis issue requires the use of incomplete features.This issue requires the use of incomplete features.

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

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.

#136894 In rust-lang/rust;

· fmease opened on Feb 12, 2025

· Updated on Feb 12, 2025

rust libs are not reproducible from 1.75

A-metadataArea: Crate metadataArea: Crate metadata

A-reproducibilityArea: Reproducible / deterministic buildsArea: Reproducible / deterministic builds

C-bugCategory: This is a bug.Category: This is a bug.

E-needs-testCall for participation: An issue has been fixed and does not reproduce, but no test has been added.Call for participation: An issue has been fixed and does not reproduce, but no test has been added.

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.

#120825 In rust-lang/rust;

· sundeep-kokkonda opened on Feb 9, 2024

· Updated on Jan 29, 2025

Distinguish versions of a crate loaded from the sysroot and from cargo

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

A-metadataArea: Crate metadataArea: Crate metadata

D-crate-version-mismatchDiagnostics: Errors or lints caused be the use of two different crate versions.Diagnostics: Errors or lints caused be the use of two different crate versions.

D-terseDiagnostics: An error or lint that doesn't give enough information about the problem at hand.Diagnostics: An error or lint that doesn't give enough information about the problem at hand.

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.

#110055 In rust-lang/rust;

· jyn514 opened on Apr 7, 2023

· Updated on Jan 16, 2025

Stable crate hash depends on host tuple

A-crossArea: Cross compilationArea: Cross compilation

A-metadataArea: Crate metadataArea: Crate metadata

A-reproducibilityArea: Reproducible / deterministic buildsArea: Reproducible / deterministic builds

C-bugCategory: This is a bug.Category: This is a bug.

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.

#113990 In rust-lang/rust;

· JakobDegen opened on Jul 24, 2023

· Updated on Dec 20, 2024

Cannot use unicode identifiers in --extern flags

A-cratesArea: Crates and their interactions (like crate loading)Area: Crates and their interactions (like crate loading)

A-metadataArea: Crate metadataArea: Crate metadata

A-UnicodeArea: UnicodeArea: Unicode

C-feature-requestCategory: A feature request, i.e: not implemented / a PR.Category: A feature request, i.e: not implemented / a PR.

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.

#134250 In rust-lang/rust;

· Nemo157 opened on Dec 13, 2024

· Updated on Dec 14, 2024

Stop emitting spans from proc macro compile time in quote expansion

A-metadataArea: Crate metadataArea: Crate metadata

A-proc-macrosArea: Procedural macrosArea: Procedural macros

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.

Status: Open (in progress).

rust-lang/rustnumber 125721

#125721 In rust-lang/rust;

· bjorn3 opened on May 29, 2024

· Updated on Nov 14, 2024

bulid panic

A-metadataArea: Crate metadataArea: Crate metadata

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

S-needs-reproStatus: This issue has no reproduction and needs a reproduction to make progress.Status: This issue has no reproduction and needs a reproduction to make progress.

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.

#125971 In rust-lang/rust;

· yylq opened on Jun 4, 2024

· Updated on Sep 23, 2024

rustdoc should be able to build documentation from compiled crates

A-metadataArea: Crate metadataArea: Crate metadata

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

P-lowLow priorityLow priority

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

Status: Open.

#2206 In rust-lang/rust;

· brson opened on Apr 14, 2012

· Updated on Sep 3, 2024

--emit metadata produces less error messages with some targets

A-atomicArea: Atomics, barriers, and sync primitivesArea: Atomics, barriers, and sync primitives

A-metadataArea: Crate metadataArea: Crate metadata

A-testsuiteArea: The testsuite used to check the correctness of rustcArea: The testsuite used to check the correctness of rustc

C-bugCategory: This is a bug.Category: This is a bug.

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.

#129315 In rust-lang/rust;

· japaric opened on Aug 20, 2024

· Updated on Sep 3, 2024

"error[E0519]: the current crate is indistinguishable from one of its dependencies" does not always accurately describe the problem

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

A-metadataArea: Crate metadataArea: Crate metadata

C-bugCategory: This is a bug.Category: This is a bug.

Status: Open.

#111691 In rust-lang/rust;

· bridiver opened on May 17, 2023

· Updated on Sep 30, 2023