Gate std::invoke_result et. al. to appropriate MSVC versions.

Summary: Only available in >= 2017 15.3, which is 1911+.

Reviewed By: aary, Orvid

Differential Revision: D6117237

fbshipit-source-id: 255804af5bfd0c743fd225b8a4fddf3cfc9cfeaf

diff --git a/folly/functional/Invoke.h b/folly/functional/Invoke.h
index 5e17a6b6e730855b674258f18336897c086ce81c..0924af7a0a01360bab5f251455bf3a1063fcb7f6 100644 (file)
--- a/folly/functional/Invoke.h
+++ b/folly/functional/Invoke.h
@@ -61,7 +61,8 @@ constexpr auto invoke(M(C::*d), Args&&... args)
 
 #endif
 
-#if __cpp_lib_is_invocable >= 201703 || _MSC_VER
+// Only available in >= MSVC 2017 15.3
+#if __cpp_lib_is_invocable >= 201703 || _MSC_VER >= 1911
 
 namespace folly {