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Remove unused va_start intrinsic - #160178

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rust-bors[bot] merged 1 commit into
rust-lang:mainfrom
beetrees:remove-unused-va-start
Jul 30, 2026
Merged

Remove unused va_start intrinsic#160178
rust-bors[bot] merged 1 commit into
rust-lang:mainfrom
beetrees:remove-unused-va-start

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@beetrees

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The va_start intrinsic isn't declared in core::intrinsics or used to implement Rust VaList support (the compiler calls bx.va_start directly in rustc_codegen_ssa), therefore this PR removes it.

@rustbot rustbot added 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 Jul 29, 2026
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rustbot commented Jul 29, 2026

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r? @petrochenkov

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@folkertdev

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Thanks!

r? me

@bors r+ rollup

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rust-bors Bot commented Jul 29, 2026

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📌 Commit 24fefc3 has been approved by folkertdev

It is now in the queue for this repository.

@rust-bors rust-bors Bot added the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Jul 29, 2026
@rust-bors rust-bors Bot removed the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 29, 2026
rust-bors Bot pushed a commit that referenced this pull request Jul 30, 2026
Rollup of 20 pull requests

Successful merges:

 - #157669 (cfi: add diag mode support)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #158693 (Add type-check to offload intrinisc calls)
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #159411 ([rustdoc] Correctly handle output options with --show-coverage)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160101 (Add missing `needs-unwind` annotation to `add-spawn-hook-reentrancy-159923` test)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160139 (iter: specialize Take::count using advance_by)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
 - #160166 (Use correct feature gates for `f16`/`f128` `From` impls)
 - #160178 (Remove unused `va_start` intrinsic)
rust-bors Bot pushed a commit that referenced this pull request Jul 30, 2026
Rollup of 20 pull requests

Successful merges:

 - #157669 (cfi: add diag mode support)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #158693 (Add type-check to offload intrinisc calls)
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #159411 ([rustdoc] Correctly handle output options with --show-coverage)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160101 (Add missing `needs-unwind` annotation to `add-spawn-hook-reentrancy-159923` test)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160139 (iter: specialize Take::count using advance_by)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
 - #160166 (Use correct feature gates for `f16`/`f128` `From` impls)
 - #160178 (Remove unused `va_start` intrinsic)
@rust-bors
rust-bors Bot merged commit f4797c0 into rust-lang:main Jul 30, 2026
13 checks passed
@rustbot rustbot added this to the 1.99.0 milestone Jul 30, 2026
rust-timer added a commit that referenced this pull request Jul 30, 2026
Rollup merge of #160178 - beetrees:remove-unused-va-start, r=folkertdev

Remove unused `va_start` intrinsic

The `va_start` intrinsic isn't declared in `core::intrinsics` or used to implement Rust `VaList` support ([the compiler calls `bx.va_start` directly in `rustc_codegen_ssa`](https://github.com/rust-lang/rust/blob/b5be620d5ac9824c4a6030df9fb72644ef4f459b/compiler/rustc_codegen_ssa/src/mir/mod.rs#L523)), therefore this PR removes it.
@beetrees
beetrees deleted the remove-unused-va-start branch July 30, 2026 13:08
@folkertdev folkertdev added the F-c_variadic `#![feature(c_variadic)]` label Jul 31, 2026
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4 participants