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<code>extern { fn f(_: *const __m128); }</code> emits <code>improper_ctypes</code>

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#135993 In rust-lang/rust;

· zopsicle opened on Jan 24, 2025

Incorrect warning about pointer to non_exhaustive ffi struct not being ffi safe

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

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

L-false-positiveLint: False positive (should not have fired).Lint: False positive (should not have fired).

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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-langRelevant to the language teamRelevant to the language team

Status: Open.

#132699 In rust-lang/rust;

· maia-s opened on Nov 6, 2024

stack overflow in ImproperCTypesVisitor::{check_type_for_ffi, check_variant_for_ffi}

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

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

I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.Status: This bug is tracked inside the repo by a `known-bug` test.

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.

#130310 In rust-lang/rust;

· tmiasko opened on Sep 13, 2024

<code>improper_ctypes</code> is many clippy lints in 1~2 rustc lints

A-clippyArea: ClippyArea: Clippy

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

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

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

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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-langRelevant to the language teamRelevant to the language team

Status: Open.

#116963 In rust-lang/rust;

· workingjubilee opened on Oct 19, 2023

<code>improper_ctypes</code> fails to trigger on invalid <code>repr(transparent)</code> types

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

A-reprArea: the `#[repr(stuff)]` attributeArea: the `#[repr(stuff)]` attribute

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

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#116959 In rust-lang/rust;

· workingjubilee opened on Oct 19, 2023

<code>improper_ctypes</code> lint triggers on valid <code>#[repr(transparent)]</code> types

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

A-reprArea: the `#[repr(stuff)]` attributeArea: the `#[repr(stuff)]` attribute

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

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#115457 In rust-lang/rust;

· madsmtm opened on Sep 1, 2023

ICE in improper_ctypes lint for specialised associated type default

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

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

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

glacierICE tracked in rust-lang/glacier.ICE tracked in rust-lang/glacier.

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

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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

S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.Status: This bug is tracked inside the repo by a `known-bug` test.

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.

#88296 In rust-lang/rust;

· juntyr opened on Aug 24, 2021

improper_ctypes diagnostic should advise to avoid improper C types because their ABI is unstable

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

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

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

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#87824 In rust-lang/rust;

· pnkfelix opened on Aug 6, 2021

Refactor improper_ctypes to separate "UCG questions" from linting decisions

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

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

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#72774 In rust-lang/rust;

· hanna-kruppe opened on May 30, 2020

improper_ctypes should not suggest reprs that lead to errors

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

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

L-improper_ctypesLint: improper_ctypesLint: improper_ctypes

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.

#60757 In rust-lang/rust;

· hanna-kruppe opened on May 12, 2019