Merge branch 'release/0.9'

Backport the fix for the buggy __builtin_subcll in Xcode 14.3.1 on arm64.

Author: chfast

CHANGELOG.md

@@ -13,6 +13,13 @@ and this project adheres to [Semantic Versioning].
   [#287](https://github.com/chfast/intx/pull/287)
   [#290](https://github.com/chfast/intx/pull/290)
 
+## [0.9.3] — 2023-07-17
+
+### Fixed
+
+- Fixed buggy `__builtin_subcll` in Xcode 14.3.1 on arm64.
+  [294](https://github.com/chfast/intx/pull/294)
+
 ## [0.9.2] — 2023-03-11
 
 ### Changed
@@ -188,6 +195,7 @@ and this project adheres to [Semantic Versioning].
 
 
 [0.10.0]: https://github.com/chfast/intx/releases/v0.10.0
+[0.9.3]: https://github.com/chfast/intx/releases/v0.9.3
 [0.9.2]: https://github.com/chfast/intx/releases/v0.9.2
 [0.9.1]: https://github.com/chfast/intx/releases/v0.9.1
 [0.9.0]: https://github.com/chfast/intx/releases/v0.9.0

include/intx/intx.hpp

@@ -185,7 +185,8 @@ inline constexpr result_with_carry<uint64_t> addc(
 inline constexpr result_with_carry<uint64_t> subc(
     uint64_t x, uint64_t y, bool carry = false) noexcept
 {
-#if __has_builtin(__builtin_subcll)
+    // Use __builtin_subcll if available (except buggy Xcode 14.3.1 on arm64).
+#if __has_builtin(__builtin_subcll) && __apple_build_version__ != 14030022
     if (!std::is_constant_evaluated())
     {
         unsigned long long carryout = 0;  // NOLINT(google-runtime-int)