From cb013604a924dcbdb5026c7e886d717d82f89f04 Mon Sep 17 00:00:00 2001
From: Marek Roszko <mark.roszko@gmail.com>
Date: Tue, 25 Aug 2020 19:58:28 -0400
Subject: [PATCH] jump_fcontext should set the outValue of fiber being switched
 to rather the one being switched from

Fixes #5162
---
 thirdparty/libcontext/libcontext.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/thirdparty/libcontext/libcontext.cpp b/thirdparty/libcontext/libcontext.cpp
index 7de0e20e3e..9e90895d31 100644
--- a/thirdparty/libcontext/libcontext.cpp
+++ b/thirdparty/libcontext/libcontext.cpp
@@ -1297,10 +1297,9 @@ fcontext_t LIBCONTEXT_CALL_CONVENTION make_fcontext(void* sp, size_t size, void(
 intptr_t LIBCONTEXT_CALL_CONVENTION jump_fcontext(fcontext_t* ofc, fcontext_t nfc,
 	intptr_t vp, bool preserve_fpu)
 {
-	auto current = (void*)GetCurrentFiber();
-	fiberParams[current].outValue = vp;
 	*ofc = GetCurrentFiber();
 	fiberParams[nfc].inValue = vp;
+	fiberParams[nfc].outValue = vp;
 	SwitchToFiber(nfc);
 	return fiberParams[*ofc].outValue;
 }