Fix observable intermediate state in thread::add_spawn_hook - #159956
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rust-bors[bot] merged 2 commits intoJul 27, 2026
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r? @folkertdev rustbot has assigned @folkertdev. Use Why was this reviewer chosen?The reviewer was selected based on:
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This doesn't touch the compiler? |
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I guess all of the compiler is r? libs |
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Thanks ^^ |
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@bors r+ rollup |
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…23, r=Mark-Simulacrum Fix observable intermediate state in `thread::add_spawn_hook` Fixes rust-lang#159923. Ensures the intermediate state of there being no hooks in `add_spawn_hooks` is not observable by allocating the new head node before taking the current hook list. Also added a note to the docs of `add_spawn_hook` that hooks are not guaranteed to run and cannot be relied upon for soundness, as there are multiple ways to prevent all/some hooks from running.
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…uwer Rollup of 8 pull requests Successful merges: - #159085 (Fix decoding attributes of `SyntheticCoroutineBody`) - #159554 (feat: Update method signature of int_from_ascii) - #159637 (Some place analysis tweaks) - #159961 (sanitize_standard_fds: Miri supports poll now) - #159967 (rustc_target: callconv: mips64: Return structs with single f128 in FPRs) - #159253 (Add suggestions for using `#[export_name]` instead of `#[link_name]` on static) - #159840 (Fix opaque type ICE in late lints under the next-generation trait solver) - #159956 (Fix observable intermediate state in `thread::add_spawn_hook`)
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…uwer Rollup of 8 pull requests Successful merges: - #159085 (Fix decoding attributes of `SyntheticCoroutineBody`) - #159554 (feat: Update method signature of int_from_ascii) - #159637 (Some place analysis tweaks) - #159961 (sanitize_standard_fds: Miri supports poll now) - #159967 (rustc_target: callconv: mips64: Return structs with single f128 in FPRs) - #159253 (Add suggestions for using `#[export_name]` instead of `#[link_name]` on static) - #159840 (Fix opaque type ICE in late lints under the next-generation trait solver) - #159956 (Fix observable intermediate state in `thread::add_spawn_hook`)
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…23, r=Mark-Simulacrum Fix observable intermediate state in `thread::add_spawn_hook` Fixes rust-lang#159923. Ensures the intermediate state of there being no hooks in `add_spawn_hooks` is not observable by allocating the new head node before taking the current hook list. Also added a note to the docs of `add_spawn_hook` that hooks are not guaranteed to run and cannot be relied upon for soundness, as there are multiple ways to prevent all/some hooks from running.
This was referenced Jul 27, 2026
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…uwer Rollup of 14 pull requests Successful merges: - #158417 (Avoid ICE when cfg_eval recovers no item from derive input) - #159085 (Fix decoding attributes of `SyntheticCoroutineBody`) - #159554 (feat: Update method signature of int_from_ascii) - #159637 (Some place analysis tweaks) - #159649 (Normalize region obligations before regionck) - #159961 (sanitize_standard_fds: Miri supports poll now) - #159967 (rustc_target: callconv: mips64: Return structs with single f128 in FPRs) - #159253 (Add suggestions for using `#[export_name]` instead of `#[link_name]` on static) - #159804 (Expand docs for fs::metadata and fs::symlink_metadata) - #159821 (Update expect message using the recommended style in binary_heap module) - #159840 (Fix opaque type ICE in late lints under the next-generation trait solver) - #159956 (Fix observable intermediate state in `thread::add_spawn_hook`) - #159991 (std: make send_process_group_signal unsupported on VxWorks) - #159996 (Detect when a macro without exclamation mark uses square brackets)
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Rollup merge of #159956 - maxdexh:fix-thread-spawn-hook-159923, r=Mark-Simulacrum Fix observable intermediate state in `thread::add_spawn_hook` Fixes #159923. Ensures the intermediate state of there being no hooks in `add_spawn_hooks` is not observable by allocating the new head node before taking the current hook list. Also added a note to the docs of `add_spawn_hook` that hooks are not guaranteed to run and cannot be relied upon for soundness, as there are multiple ways to prevent all/some hooks from running.
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Fixes #159923.
Ensures the intermediate state of there being no hooks in
add_spawn_hooksis not observable by allocating the new head node before taking the current hook list.Also added a note to the docs of
add_spawn_hookthat hooks are not guaranteed to run and cannot be relied upon for soundness, as there are multiple ways to prevent all/some hooks from running.