From b8e66131d6b1e9f950dc87369b83c320d8fdeb5b Mon Sep 17 00:00:00 2001
From: Takeru Chuganji <chu@ganzy.jp>
Date: Tue, 11 Dec 2018 10:31:10 -0800
Subject: [PATCH] Leak mutex to avoid a crashing issue

Ref: https://github.com/facebook/componentkit/pull/906
---
 React/Views/RCTFont.mm | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/React/Views/RCTFont.mm b/React/Views/RCTFont.mm
index e26fcd89bc810b..d783722cc94c59 100644
--- a/React/Views/RCTFont.mm
+++ b/React/Views/RCTFont.mm
@@ -126,12 +126,12 @@ static inline BOOL CompareFontWeights(UIFontWeight firstWeight, UIFontWeight sec
 static UIFont *cachedSystemFont(CGFloat size, RCTFontWeight weight)
 {
   static NSCache *fontCache;
-  static std::mutex fontCacheMutex;
+  static std::mutex *fontCacheMutex = new std::mutex;
 
   NSString *cacheKey = [NSString stringWithFormat:@"%.1f/%.2f", size, weight];
   UIFont *font;
   {
-    std::lock_guard<std::mutex> lock(fontCacheMutex);
+    std::lock_guard<std::mutex> lock(*fontCacheMutex);
     if (!fontCache) {
       fontCache = [NSCache new];
     }
@@ -158,7 +158,7 @@ static inline BOOL CompareFontWeights(UIFontWeight firstWeight, UIFontWeight sec
     }
 
     {
-      std::lock_guard<std::mutex> lock(fontCacheMutex);
+      std::lock_guard<std::mutex> lock(*fontCacheMutex);
       [fontCache setObject:font forKey:cacheKey];
     }
   }