export symbols: support macos/windows(32/64) by cezarbbb · Pull Request #155535 · rust-lang/rust

cezarbbb · 2026-04-20T03:16:28Z

Previously, in the pr #150992 , export symbols only supported Linux. The special prefix and suffix rules for some symbols in macOS and Windows were not fully supported. This pull request attempts to clarify these rules and add corresponding support.

Currently, the undecorate_c_symbol() function has been added to handle macOS _ prefixes, Windows x86 calling convention modifiers (cdecl/stdcall/fastcall/vectorcall), and Arm64EC # prefixes.

*Update: Handling of Windows C++ mangled symbols has now been added(Linux/macOS don't need).

r? @bjorn3 @petrochenkov

rustbot · 2026-04-20T03:16:32Z

r? @wesleywiser

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cezarbbb · 2026-04-20T03:20:06Z

Could someone pls give me permission to test whether the current modifications will work correctly on Windows and macOS?
Cause I don't have the corresponding devices.

adwinwhite · 2026-04-20T03:36:02Z

@bors delegate=try

rust-bors · 2026-04-20T03:36:05Z

✌️ @cezarbbb, you can now perform try builds on this pull request!

You can now post @bors try to start a try build.

cezarbbb · 2026-04-20T03:39:54Z

@bors delegate=try

Thanks!!! It helps me a lot:>

cezarbbb · 2026-04-20T03:40:43Z

@bors try jobs=x86_64-msvc-*

export symbols: support macos/windows(32/64) try-job: x86_64-msvc-*

rust-bors · 2026-04-20T06:09:18Z

💔 Test for 22e628f failed: CI. Failed job:

try - x86_64-msvc-1 (web logs, enhanced plaintext logs)

cezarbbb · 2026-04-20T06:27:27Z

@bors try jobs=x86_64-msvc-*

export symbols: support macos/windows(32/64) try-job: x86_64-msvc-*

rust-bors · 2026-04-20T09:06:15Z

💔 Test for 71d836c failed: CI. Failed job:

try - x86_64-msvc-1 (web logs, enhanced plaintext logs)

cezarbbb · 2026-04-20T09:52:11Z

@bors try jobs=x86_64-msvc-*

export symbols: support macos/windows(32/64) try-job: x86_64-msvc-*

rust-bors · 2026-04-20T12:45:50Z

☀️ Try build successful (CI)
Build commit: 6d8d88e (6d8d88e3ab7025c82dc5ed03d96874614fdf1189, parent: e22c616e4e87914135c1db261a03e0437255335e)

cezarbbb · 2026-04-20T12:56:04Z

@bors try jobs=aarch64-*

export symbols: support macos/windows(32/64) try-job: aarch64-*

rustbot · 2026-06-17T07:50:14Z

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

cezarbbb · 2026-06-17T07:54:30Z

This time's force push only resolves the conflict. Call try jobs again is just in case.
@bors try jobs=x86_64-msvc*

export symbols: support macos/windows(32/64) try-job: x86_64-msvc*

rust-bors · 2026-06-17T10:53:44Z

☀️ Try build successful (CI)
Build commit: b9ef0af (b9ef0af7c6d37ff653a63921679884f6161be8a6)
Base parent: 98594f4 (98594f404ee741f97fefbae4aca049cde911bc94)

bjorn3 · 2026-06-24T09:04:16Z

@bors r+

rust-bors · 2026-06-24T09:04:19Z

📌 Commit ca10995 has been approved by bjorn3

It is now in the queue for this repository.

…uwer Rollup of 17 pull requests Successful merges: - #153697 (Add arg splat experiment initial tuple impl) - #158294 (Use .drectve for MSVC DLL exports) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158355 (Fixup the refactoring errors in #156246) - #158390 (Fix: auto trait, const trait bound) Failed merges: - #155535 (export symbols: support macos/windows(32/64))

@bjorn3

…bjorn3 export symbols: support macos/windows(32/64) Previously, in the pr rust-lang#150992 , export symbols only supported Linux. The special prefix and suffix rules for some symbols in macOS and Windows were not fully supported. This pull request attempts to clarify these rules and add corresponding support. Currently, the `undecorate_c_symbol()` function has been added to handle macOS `_` prefixes, Windows x86 calling convention modifiers (cdecl/stdcall/fastcall/vectorcall), and Arm64EC `#` prefixes. *Update: Handling of Windows C++ mangled symbols has now been added(Linux/macOS don't need). r? @bjorn3 @petrochenkov

…uwer Rollup of 17 pull requests Successful merges: - #153697 (Add arg splat experiment initial tuple impl) - #155535 (export symbols: support macos/windows(32/64)) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158355 (Fixup the refactoring errors in #156246) - #158390 (Fix: auto trait, const trait bound)

@bjorn3

…bjorn3 export symbols: support macos/windows(32/64) Previously, in the pr rust-lang#150992 , export symbols only supported Linux. The special prefix and suffix rules for some symbols in macOS and Windows were not fully supported. This pull request attempts to clarify these rules and add corresponding support. Currently, the `undecorate_c_symbol()` function has been added to handle macOS `_` prefixes, Windows x86 calling convention modifiers (cdecl/stdcall/fastcall/vectorcall), and Arm64EC `#` prefixes. *Update: Handling of Windows C++ mangled symbols has now been added(Linux/macOS don't need). r? @bjorn3 @petrochenkov

…uwer Rollup of 16 pull requests Successful merges: - #153697 (Add arg splat experiment initial tuple impl) - #155535 (export symbols: support macos/windows(32/64)) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158390 (Fix: auto trait, const trait bound) Failed merges: - #158355 (Fixup the refactoring errors in #156246)

…uwer Rollup of 15 pull requests Successful merges: - #155535 (export symbols: support macos/windows(32/64)) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158390 (Fix: auto trait, const trait bound)

@bjorn3

Rollup merge of #155535 - cezarbbb:cstyle-export-symbols, r=bjorn3 export symbols: support macos/windows(32/64) Previously, in the pr #150992 , export symbols only supported Linux. The special prefix and suffix rules for some symbols in macOS and Windows were not fully supported. This pull request attempts to clarify these rules and add corresponding support. Currently, the `undecorate_c_symbol()` function has been added to handle macOS `_` prefixes, Windows x86 calling convention modifiers (cdecl/stdcall/fastcall/vectorcall), and Arm64EC `#` prefixes. *Update: Handling of Windows C++ mangled symbols has now been added(Linux/macOS don't need). r? @bjorn3 @petrochenkov

rustbot assigned wesleywiser Apr 20, 2026

rustbot added A-run-make Area: port run-make Makefiles to rmake.rs S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Apr 20, 2026

rustbot assigned bjorn3 and unassigned wesleywiser Apr 20, 2026

rust-bors Bot pushed a commit that referenced this pull request Apr 20, 2026

Auto merge of #155535 - cezarbbb:cstyle-export-symbols, r=<try>

22e628f

export symbols: support macos/windows(32/64) try-job: x86_64-msvc-*