[libcxx-commits] [libcxx] [libcxx] Allow string to use SSO in constant evaluation. (PR #66576)

[James Y Knight via libcxx-commits]

================
@@ -830,8 +830,8 @@ private:
     {
         union
         {
-            __long  __l;
             __short __s;
+            __long  __l;
             __raw   __r;
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jyknight wrote:

The use of `if (__libcpp_is_constant_evaluated()) __r_.first() = __rep();` throughout the code will activate the first alternative in the union. Now, we want that default-active alternative to be the short repr, so I moved it to be first.

https://github.com/llvm/llvm-project/pull/66576