From 18c5b5b6e648eeae37e249fa5c784f54d14cef81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=91=D1=80=D0=B0=D0=BD=D0=B8=D0=BC=D0=B8=D1=80=20=D0=9A?=
 =?UTF-8?q?=D0=B0=D1=80=D0=B0=D1=9F=D0=B8=D1=9B?=
 <branimirkaradzic@gmail.com>
Date: Wed, 2 Sep 2020 20:30:11 -0700
Subject: [PATCH] Added bx::functionCast.

---
 .appveyor.yml            | 2 +-
 include/bx/bx.h          | 7 +++++++
 include/bx/inline/bx.inl | 6 ++++++
 src/thread.cpp           | 4 +++-
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index 83376c1..b0b1077 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -6,7 +6,7 @@ os:
 environment:
   matrix:
   - TOOLSET: vs2017
-  - TOOLSET: vs2019
+#  - TOOLSET: vs2019
 
 configuration:
   - Debug
diff --git a/include/bx/bx.h b/include/bx/bx.h
index 9267bbd..a3f592a 100644
--- a/include/bx/bx.h
+++ b/include/bx/bx.h
@@ -38,6 +38,13 @@ namespace bx
 	template<class Ty>
 	constexpr bool isTriviallyCopyable();
 
+	///
+	typedef void (*AnyFn)(void);
+
+	///
+	template<typename ProtoT>
+	constexpr ProtoT functionCast(AnyFn _fn);
+
 	/// Swap two values.
 	template<typename Ty>
 	void swap(Ty& _a, Ty& _b);
diff --git a/include/bx/inline/bx.inl b/include/bx/inline/bx.inl
index 1cf53a5..152084e 100644
--- a/include/bx/inline/bx.inl
+++ b/include/bx/inline/bx.inl
@@ -33,6 +33,12 @@ namespace bx
 		return __is_trivially_copyable(Ty);
 	}
 
+	template<typename ProtoT>
+	inline constexpr ProtoT functionCast(AnyFn _fn)
+	{
+		return reinterpret_cast<ProtoT>(_fn);
+	}
+
 	template<typename Ty>
 	inline void swap(Ty& _a, Ty& _b)
 	{
diff --git a/src/thread.cpp b/src/thread.cpp
index 4300517..79a2285 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -279,7 +279,9 @@ namespace bx
 #elif BX_PLATFORM_WINDOWS
 		// Try to use the new thread naming API from Win10 Creators update onwards if we have it
 		typedef HRESULT (WINAPI *SetThreadDescriptionProc)(HANDLE, PCWSTR);
-		SetThreadDescriptionProc SetThreadDescription = (SetThreadDescriptionProc)(GetProcAddress(GetModuleHandleA("Kernel32.dll"), "SetThreadDescription"));
+		SetThreadDescriptionProc SetThreadDescription = bx::functionCast<SetThreadDescriptionProc>(
+			  GetProcAddressA(GetModuleHandleA("Kernel32.dll"), "SetThreadDescription")
+			);
 		if (SetThreadDescription)
 		{
 			uint32_t length = (uint32_t)bx::strLen(_name)+1;