<optional>: Extend compiler bug workaround to MSVC (#5407)

StephanTLavavej · web-flow · commit 7b4119a86478 · 2025-04-22T15:41:43.000-07:00
diff --git a/stl/inc/optional b/stl/inc/optional
@@ -952,7 +952,7 @@ _NODISCARD constexpr bool operator>=(const _Ty1& _Left, const optional<_Ty2>& _R
 }
 
 #if _HAS_CXX20
-#ifdef __EDG__ // TRANSITION, DevCom-10880933
+#ifndef __clang__ // TRANSITION, DevCom-10880933 (EDG) and VSO-2444237 (MSVC)
 template <class _Ty>
 void _Derived_from_optional_impl(const optional<_Ty>&);
 

Original file line number	Diff line number	Diff line change
`@@ -952,7 +952,7 @@ _NODISCARD constexpr bool operator>=(const _Ty1& _Left, const optional<_Ty2>& _R`
`952`	`952`	`}`
`953`	`953`
`954`	`954`	`#if _HAS_CXX20`
`955`		`-#ifdef __EDG__ // TRANSITION, DevCom-10880933`
	`955`	`+#ifndef __clang__ // TRANSITION, DevCom-10880933 (EDG) and VSO-2444237 (MSVC)`
`956`	`956`	`template <class _Ty>`
`957`	`957`	`void _Derived_from_optional_impl(const optional<_Ty>&);`
`958`	`958`