[libcxx-commits] [libcxx] Lower std::string's alignment requirement from 16 to 8. (PR #68807)

[via libcxx-commits]

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@@ -18,7 +18,13 @@
 #include "test_macros.h"
 
 // alignment of the string heap buffer is hardcoded to 16
-static const std::size_t alignment = 16;
+
+static const std::size_t alignment =
+#ifdef _LIBCPP_ABI_STRING_8_BYTE_ALIGNMENT
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EricWF wrote:

I would rather revisit this after landing the change.
There's more risk and more reason to reject the changes if we apply it globally.
So let's get this in, then consider if we can push it to everybody.

https://github.com/llvm/llvm-project/pull/68807