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Issues list

Add a run-make test that checks our core::ffi::c_* types against Clang A-FFI Area: Foreign function interface (FFI) A-testsuite Area: The testsuite used to check the correctness of rustc E-medium Call for participation: Medium difficulty. Experience needed to fix: Intermediate. E-needs-design This issue needs exploration and design to see how and if we can fix/implement it E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#133058 opened Nov 15, 2024 by tgross35
@ricci009
6
ABI mismatch between rustc and clang for passing ZSTs using the win64 ABI. A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) C-bug Category: This is a bug. O-windows-msvc Toolchain: MSVC, Operating system: Windows T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132893 opened Nov 11, 2024 by programmerjake
11
Incorrect warning about pointer to non_exhaustive ffi struct not being ffi safe A-FFI Area: Foreign function interface (FFI) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. L-false-positive Lint: False positive (should not have fired). L-improper_ctypes Lint: improper_ctypes T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#132699 opened Nov 6, 2024 by maia-s
Several platforms still have incorrectly aligned u128/i128 A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. llvm-fixed-upstream Issue expected to be fixed by the next major LLVM upgrade, or backported fixes O-MIPS Target: MIPS processors O-PowerPC Target: PowerPC processors O-SPARC Target: SPARC processors S-waiting-on-LLVM Status: the compiler-dragon is eepy, can someone get it some tea? T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#128950 opened Aug 11, 2024 by beetrees
10
Delegation incorrectly assumes VaListImpl<'_> from ... will correctly pass-through to ... A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) C-bug Category: This is a bug. F-c_variadic `#![feature(c_variadic)]` F-fn_delegation `#![feature(fn_delegation)]` requires-incomplete-features This issue requires the use of incomplete features.
#127443 opened Jul 7, 2024 by workingjubilee
1
repr(C) on an enum accepts discriminants that do not fit into the default C enum size A-enum 🤓 akshually it's an "ADT" or "algebraic data type" A-FFI Area: Foreign function interface (FFI) A-repr Area: the `#[repr(stuff)]` attribute O-windows Operating system: Windows O-windows-msvc Toolchain: MSVC, Operating system: Windows
#124403 opened Apr 26, 2024 by RalfJung
13
improper_ctypes is many clippy lints in 1~2 rustc lints A-clippy Area: Clippy A-diagnostics Area: Messages for errors, warnings, and lints A-FFI Area: Foreign function interface (FFI) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. C-cleanup Category: PRs that clean code up or issues documenting cleanup. L-improper_ctypes Lint: improper_ctypes T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#116963 opened Oct 19, 2023 by workingjubilee
improper_ctypes fails to trigger on invalid repr(transparent) types A-FFI Area: Foreign function interface (FFI) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-repr Area: the `#[repr(stuff)]` attribute C-bug Category: This is a bug. L-improper_ctypes Lint: improper_ctypes T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#116959 opened Oct 19, 2023 by workingjubilee
1
StackOverflow error when assert fails or panic when compiling to Android A-cross Area: Cross compilation A-FFI Area: Foreign function interface (FFI) A-panic Area: Panicking machinery C-bug Category: This is a bug. O-android Operating system: Android O-unix Operating system: Unix-like O-x86_64 Target: x86-64 processors (like x86_64-*) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#116309 opened Oct 1, 2023 by matan-h
Rust called golang func by ffi failed on windows A-FFI Area: Foreign function interface (FFI) A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug.
#115973 opened Sep 19, 2023 by oligamiq
7
The sparc64, riscv64, loongarch64 extern "C" fn ABIs are all wrong when aligned/packed structs are involved A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-loongarch Target: LoongArch (LA32R, LA32S, LA64) O-riscv Target: RISC-V architecture O-SPARC Target: SPARC processors P-medium Medium priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#115609 opened Sep 6, 2023 by RalfJung
24
extern "C" fn on mips64 targets does not respect repr(transparent) A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-MIPS Target: MIPS processors P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#115404 opened Aug 31, 2023 by RalfJung
5
extern "C" fn on sparc64 targets does not respect repr(transparent) A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-SPARC Target: SPARC processors P-high High priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#115336 opened Aug 29, 2023 by RalfJung
11
extern "C" functions returning ZSTs A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) C-discussion Category: Discussion or questions that doesn't represent real issues. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#115091 opened Aug 22, 2023 by ChayimFriedman2
9
MSVC on x86-32 Windows fails to align variables to their required alignment A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) C-bug Category: This is a bug. disposition-close This PR / issue is in PFCP or FCP with a disposition to close it. finished-final-comment-period The final comment period is finished for this PR / Issue. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-windows-msvc Toolchain: MSVC, Operating system: Windows regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#112480 opened Jun 10, 2023 by glandium
63
rustc randomly fail to link with C program A-FFI Area: Foreign function interface (FFI) A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug.
#111083 opened May 2, 2023 by xclaesse
10
C/C++ code linked to Rust code can't use some clang builtins A-FFI Area: Foreign function interface (FFI) A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. E-hard Call for participation: Hard difficulty. Experience needed to fix: A lot. E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. O-android Operating system: Android T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#109717 opened Mar 29, 2023 by glandium
3
repr(C) enums with a variant that overflows the native enum type should warn A-diagnostics Area: Messages for errors, warnings, and lints A-FFI Area: Foreign function interface (FFI) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#108069 opened Feb 15, 2023 by ChrisDenton
3
An enum with one variant that directly contains PhantomData should be FFI-safe. A-FFI Area: Foreign function interface (FFI) C-bug Category: This is a bug.
#107854 opened Feb 9, 2023 by shepmaster
Multiple incompatible clashing extern fn's should be a hard error (potentially phased in via future-incompat) A-FFI Area: Foreign function interface (FFI) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. C-future-incompatibility Category: Future-incompatibility lints T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#105146 opened Dec 1, 2022 by pnkfelix
4
Linking static library that contains undefined references A-FFI Area: Foreign function interface (FFI) A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#103973 opened Nov 4, 2022 by bewee-i
1
extern "C" functions don't generate the same IR definitions as clang on x86, causing problems with cross-language LTO A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-x86_32 Target: x86 processors, 32 bit (like i686-*) P-high High priority regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-llvm Working group: LLVM backend code generation
#102174 opened Sep 23, 2022 by glandium
18
Re-export symbols recursion occurs A-FFI Area: Foreign function interface (FFI) A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#96855 opened May 9, 2022 by aadog
8
Is bool FFI-safe? A-ABI Area: Concerning the application binary interface (ABI) A-FFI Area: Foreign function interface (FFI)
#95184 opened Mar 21, 2022 by mcy
2
No warning for violating AAPCS64 A-FFI Area: Foreign function interface (FFI) A-layout Area: Memory layout of types C-bug Category: This is a bug. O-AArch64 Armv8-A or later processors in AArch64 mode
#89003 opened Sep 16, 2021 by workingjubilee
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