[libcxx-commits] [libcxx] [libc++][C++03] remove unused macro in __config (PR #156609)

via libcxx-commits libcxx-commits at lists.llvm.org
Wed Sep 3 09:03:29 PDT 2025


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libcxx

Author: None (Un1q32)

<details>
<summary>Changes</summary>

The only place this macro was used was in `__memory/aligned_alloc.h`, but the code that used this macro also checked for C++17 so it was removed, now this macro is never used.

---
Full diff: https://github.com/llvm/llvm-project/pull/156609.diff


1 Files Affected:

- (modified) libcxx/include/__cxx03/__config (-12) 


``````````diff
diff --git a/libcxx/include/__cxx03/__config b/libcxx/include/__cxx03/__config
index 9b88a495055ee..d574eab8a12b1 100644
--- a/libcxx/include/__cxx03/__config
+++ b/libcxx/include/__cxx03/__config
@@ -622,18 +622,6 @@ typedef __char32_t char32_t;
 #    define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
 #  endif
 
-// It is not yet possible to use aligned_alloc() on all Apple platforms since
-// 10.15 was the first version to ship an implementation of aligned_alloc().
-#  if defined(__APPLE__)
-#    if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) &&                                                     \
-         __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500)
-#      define _LIBCPP_HAS_NO_C11_ALIGNED_ALLOC
-#    endif
-#  elif defined(__ANDROID__) && __ANDROID_API__ < 28
-// Android only provides aligned_alloc when targeting API 28 or higher.
-#    define _LIBCPP_HAS_NO_C11_ALIGNED_ALLOC
-#  endif
-
 #  if defined(__APPLE__) || defined(__FreeBSD__)
 #    define _LIBCPP_HAS_DEFAULTRUNELOCALE
 #  endif

``````````

</details>


https://github.com/llvm/llvm-project/pull/156609


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