nuttx: add __errno() function declaration #4687
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Add missing __errno() function declaration for NuttX platform to enable proper errno handling in Rust code. NuttX's libc provides __errno() function which returns a pointer to the thread-local errno variable. This change allows Rust programs running on NuttX to properly access and manipulate errno values through the standard libc interface. Fixes errno functionality for NuttX targets.
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Sep 22, 2025
Add missing __errno() function declaration for NuttX platform to enable proper errno handling in Rust code. NuttX's libc provides __errno() function which returns a pointer to the thread-local errno variable. This change allows Rust programs running on NuttX to properly access and manipulate errno values through the standard libc interface. Fixes errno functionality for NuttX targets. (backport <rust-lang#4687>) (cherry picked from commit ffab35a)
tgross35
pushed a commit
to tgross35/rust-libc
that referenced
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Sep 22, 2025
Add missing __errno() function declaration for NuttX platform to enable proper errno handling in Rust code. NuttX's libc provides __errno() function which returns a pointer to the thread-local errno variable. This change allows Rust programs running on NuttX to properly access and manipulate errno values through the standard libc interface. Fixes errno functionality for NuttX targets. (backport <rust-lang#4687>) (cherry picked from commit ffab35a)
github-merge-queue bot
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that referenced
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Sep 22, 2025
Add missing __errno() function declaration for NuttX platform to enable proper errno handling in Rust code. NuttX's libc provides __errno() function which returns a pointer to the thread-local errno variable. This change allows Rust programs running on NuttX to properly access and manipulate errno values through the standard libc interface. Fixes errno functionality for NuttX targets. (backport <#4687>) (cherry picked from commit ffab35a)
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Description
Add missing __errno() function declaration for NuttX platform to enable proper errno handling in Rust code. NuttX's libc provides __errno() function which returns a pointer to the thread-local errno variable.
This change allows Rust programs running on NuttX to properly access and manipulate errno values through the standard libc interface.
Fixes errno functionality for NuttX targets.
Sources
https://github.com/apache/nuttx/blob/897c79084f79ffcf95524b1e9f3b56d34896da22/libs/libc/errno/lib_errno.c#L57-L66
Checklist
libc-test/semverhave been updated*LASTor*MAXareincluded (see #3131)
cd libc-test && cargo test --target mytarget);especially relevant for platforms that may not be checked in CI
@rustbot label +stable-nominated