zhangyu-duck opened a new pull request, #19868: URL: https://github.com/apache/nuttx/pull/19868
## Summary Switch `<nuttx/atomic.h>` to call toolchain builtin atomic functions directly (`__atomic_*` / `__c11_atomic_*` / `_Interlocked*`), avoiding conflicts with third-party C/C++ standard libraries that include `<atomic>`/`<stdatomic.h>`. Rename `atomic_fetch_xxx` -> `atomic_xxx` (e.g., `atomic_fetch_add` -> `atomic_add`) because the `atomic_fetch_xxx` naming is reserved by the C/C++ standard and conflicts with standard library declarations. Other non-standard API names (`atomic_read`, `atomic_set`, `atomic_xchg`) remain unchanged. Use `_Atomic` qualifier for `atomic_t` typedef when supported, with a `__Atomic(t)` wrapper for clang/C++ compatibility. ## Breaking change This is a breaking API change. A companion PR in the apps tree renames call sites (`atomic_fetch_add` -> `atomic_add`, etc.). ## Stacked PR chain Depends on #19867. This is PR 3 of 3: - #19866: atomic.h header fixes - #19867: multi-backend atomic implementation - PR 3 (this): toolchain builtin atomic + API rename ## Test CI testbuild across ARM/RISC-V/SIM targets. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
