[libcxx-commits] [libcxx] [libc++] Fix missing availability check for visionOS in apple_availability.h (PR #187015)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libcxx

Author: Louis Dionne (ldionne)

<details>
<summary>Changes</summary>

Without this, we were assuming that __ulock was unavailable on visionOS and falling back to the manual implementation, when in reality we can always rely on the existence of ulock.

Fixes #<!-- -->186467

---
Full diff: https://github.com/llvm/llvm-project/pull/187015.diff


1 Files Affected:

- (modified) libcxx/src/include/apple_availability.h (+4) 


``````````diff
diff --git a/libcxx/src/include/apple_availability.h b/libcxx/src/include/apple_availability.h
index fc2ad15065416..715e187546923 100644
--- a/libcxx/src/include/apple_availability.h
+++ b/libcxx/src/include/apple_availability.h
@@ -27,6 +27,10 @@
 #    if __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 60000
 #      define _LIBCPP_USE_ULOCK
 #    endif
+#  elif defined(__ENVIRONMENT_OS_VERSION_MIN_REQUIRED__) && __is_target_os(visionos)
+#    if __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ >= 10000
+#      define _LIBCPP_USE_ULOCK
+#    endif
 #  endif // __ENVIRONMENT_.*_VERSION_MIN_REQUIRED__
 
 #endif // __APPLE__

``````````

</details>


https://github.com/llvm/llvm-project/pull/187015