Add arc4random and arc4random_buf to NuttX #4464
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* Declare `arc4random` and `arc4random_buf` as extern "C" functions in the NuttX module * Enable access to system-provided random number generation for NuttX targets * Aligns NuttX FFI with other Unix platforms that expose these functions This change allows Rust code targeting NuttX to use `arc4random` and `arc4random_buf` for secure random number generation, improving compatibility and feature parity with other targets.
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* Declare `arc4random` and `arc4random_buf` as extern "C" functions in the NuttX module * Enable access to system-provided random number generation for NuttX targets * Aligns NuttX FFI with other Unix platforms that expose these functions This change allows Rust code targeting NuttX to use `arc4random` and `arc4random_buf` for secure random number generation, improving compatibility and feature parity with other targets. (backport <rust-lang#4464>) (cherry picked from commit f8e4746)
tgross35
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that referenced
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Jun 1, 2025
* Declare `arc4random` and `arc4random_buf` as extern "C" functions in the NuttX module * Enable access to system-provided random number generation for NuttX targets * Aligns NuttX FFI with other Unix platforms that expose these functions This change allows Rust code targeting NuttX to use `arc4random` and `arc4random_buf` for secure random number generation, improving compatibility and feature parity with other targets. (backport <rust-lang#4464>) (cherry picked from commit f8e4746)
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Description
arc4randomandarc4random_bufas extern "C" functions in the NuttX moduleThis change allows Rust code targeting NuttX to use
arc4randomandarc4random_buffor secure random number generation, improving compatibility and feature parity with other targets.Sources
https://github.com/apache/nuttx/blob/302ceb701b2d28ab16aa421e2dc5c70ec0dd594e/include/stdlib.h#L155-L156
@rustbot label +stable-nominated
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