[libcxx-commits] [libcxx] [libc++] Correct `optional<T&>` implementation (PR #174537)

[William Tran-Viet via libcxx-commits]

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@@ -149,9 +149,48 @@ void test_explicit() {
 #endif
 }
 
+#if TEST_STD_VER >= 26
+struct Throws {
+  int val = 42;
+  bool b  = false;
+  constexpr Throws() {};
+  operator int&() {
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smallp-o-p wrote:

I don't think any compiler supports throwing in constant evaluation at the moment, so I will only evaluate the non-throwing case for now.

https://github.com/llvm/llvm-project/pull/174537