[libcxx-commits] [libcxx] Adds back special-case for booleans in std::variant gated by _LIBCPP_ENABLE_NARROWING_CONVERSIONS_IN_VARIANT. (PR #73121)

[Jordan Rupprecht via libcxx-commits]

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@@ -33,8 +33,13 @@ int main(int, char**)
 
   static_assert(!std::is_assignable<std::variant<int, bool>, decltype("meow")>::value, "");
   static_assert(!std::is_assignable<std::variant<int, const bool>, decltype("meow")>::value, "");
-
+#if defined(_LIBCPP_ENABLE_NARROWING_CONVERSIONS_IN_VARIANT)
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rupprecht wrote:

nit: it seems like `#ifdef` is preferred over `#if defined(...)`, I'd go w/ that.

https://github.com/llvm/llvm-project/pull/73121