From 292724b2280da23a2cebd5682d504a113bc45c83 Mon Sep 17 00:00:00 2001
From: Shawn Hoffman <godisgovernment@gmail.com>
Date: Sat, 6 Aug 2022 22:22:14 -0700
Subject: [PATCH 1/2] Revert "msvc: use std::chrono for
 GetLocalTimeSinceJan1970"

This reverts commit 86da6c98fbd229d87de7cf8b9c7eb94c16923829.
---
 Source/Core/Common/Timer.cpp | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/Source/Core/Common/Timer.cpp b/Source/Core/Common/Timer.cpp
index fb81164390..5e4af1ef45 100644
--- a/Source/Core/Common/Timer.cpp
+++ b/Source/Core/Common/Timer.cpp
@@ -7,6 +7,7 @@
 
 #ifdef _WIN32
 #include <Windows.h>
+#include <ctime>
 #include <timeapi.h>
 #else
 #include <sys/time.h>
@@ -67,12 +68,6 @@ u64 Timer::ElapsedMs() const
 
 u64 Timer::GetLocalTimeSinceJan1970()
 {
-#ifdef _MSC_VER
-  std::chrono::zoned_seconds seconds(
-      std::chrono::current_zone(),
-      std::chrono::time_point_cast<std::chrono::seconds>(std::chrono::system_clock::now()));
-  return seconds.get_local_time().time_since_epoch().count();
-#else
   time_t sysTime, tzDiff, tzDST;
   time(&sysTime);
   tm* gmTime = localtime(&sysTime);
@@ -88,7 +83,6 @@ u64 Timer::GetLocalTimeSinceJan1970()
   tzDiff = sysTime - mktime(gmTime);
 
   return static_cast<u64>(sysTime + tzDiff + tzDST);
-#endif
 }
 
 void Timer::IncreaseResolution()

From 6e94c20abdbb5284a78afbdca627f1528f78dbc3 Mon Sep 17 00:00:00 2001
From: Shawn Hoffman <godisgovernment@gmail.com>
Date: Sat, 6 Aug 2022 22:25:30 -0700
Subject: [PATCH 2/2] add TODO for chrono in GetLocalTimeSinceJan1970

---
 Source/Core/Common/Timer.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Source/Core/Common/Timer.cpp b/Source/Core/Common/Timer.cpp
index 5e4af1ef45..91381eebd3 100644
--- a/Source/Core/Common/Timer.cpp
+++ b/Source/Core/Common/Timer.cpp
@@ -68,6 +68,10 @@ u64 Timer::ElapsedMs() const
 
 u64 Timer::GetLocalTimeSinceJan1970()
 {
+  // TODO Would really, really like to use std::chrono here, but Windows did not support
+  // std::chrono::current_zone() until 19H1, and other compilers don't even provide support for
+  // timezone-related parts of chrono. Someday!
+  // see https://bugs.dolphin-emu.org/issues/13007#note-4
   time_t sysTime, tzDiff, tzDST;
   time(&sysTime);
   tm* gmTime = localtime(&sysTime);