From 83fda73ce320f17b35013bdef566c2a23d0f1a1b Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Wed, 12 Sep 2018 17:45:02 +0300
Subject: [PATCH] Workaround MSVC 15.8.4 regression.

It crashes with non-type-erased producers.
---
 Telegram/SourceFiles/rpl/producer.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Telegram/SourceFiles/rpl/producer.h b/Telegram/SourceFiles/rpl/producer.h
index fb130e3d4..7aaa366d9 100644
--- a/Telegram/SourceFiles/rpl/producer.h
+++ b/Telegram/SourceFiles/rpl/producer.h
@@ -13,7 +13,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <rpl/details/superset_type.h>
 #include <rpl/details/callable.h>
 
-#if defined _DEBUG
+#if defined _DEBUG || defined COMPILER_MSVC
 #define RPL_PRODUCER_TYPE_ERASED_ALWAYS
 #endif // _DEBUG
 
@@ -443,9 +443,9 @@ template <
 inline auto make_producer(Generator &&generator)
 #ifdef RPL_PRODUCER_TYPE_ERASED_ALWAYS
 -> producer<Value, Error> {
-#else // RPL_CONSUMER_TYPE_ERASED_ALWAYS
+#else // RPL_PRODUCER_TYPE_ERASED_ALWAYS
 -> producer<Value, Error, std::decay_t<Generator>> {
-#endif // !RPL_CONSUMER_TYPE_ERASED_ALWAYS
+#endif // !RPL_PRODUCER_TYPE_ERASED_ALWAYS
 	return std::forward<Generator>(generator);
 }