--- libmalloc/libmalloc-409.40.6/src/platform.h
+++ libmalloc/libmalloc-374.120.1/src/platform.h
@@ -24,11 +24,11 @@
 #ifndef __PLATFORM_H
 #define __PLATFORM_H
 
-#if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) || (TARGET_OS_DRIVERKIT && !MALLOC_TARGET_DK_OSX)
+#if TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
 #define MALLOC_TARGET_IOS 1
-#else // (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) || (TARGET_OS_DRIVERKIT && !MALLOC_TARGET_DK_OSX)
+#else // TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
 #define MALLOC_TARGET_IOS 0
-#endif // (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR) || (TARGET_OS_DRIVERKIT && !MALLOC_TARGET_DK_OSX)
+#endif // TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
 
 #ifdef __LP64__
 #define MALLOC_TARGET_64BIT 1
@@ -96,33 +96,15 @@
 #endif // MALLOC_TARGET_64BIT
 
 // The large last-free cache (aka. death row cache)
-#if TARGET_OS_IOS || TARGET_OS_SIMULATOR || TARGET_OS_DRIVERKIT
-// sdk=iphoneos, simulator, sdk=driverkit
-#define CONFIG_LARGE_CACHE 1
-#elif MALLOC_TARGET_IOS
-// all other embedded
+#if MALLOC_TARGET_IOS
 #define CONFIG_LARGE_CACHE 0
 #else
-// Mac
 #define CONFIG_LARGE_CACHE 1
 #endif
 
 #if CONFIG_LARGE_CACHE
-
-#if MALLOC_TARGET_IOS && MALLOC_TARGET_64BIT
-#define DEFAULT_LARGE_CACHE_ENABLED false
-#define CONFIG_DEFERRED_RECLAIM 1
-
-#elif TARGET_OS_SIMULATOR || (MALLOC_TARGET_IOS && !MALLOC_TARGET_64BIT)
-#define DEFAULT_LARGE_CACHE_ENABLED false
-#define CONFIG_DEFERRED_RECLAIM 0
-
-#else // TARGET_OS_SIMULATOR || (MALLOC_TARGET_IOS && !MALLOC_TARGET_64BIT)
 #define DEFAULT_LARGE_CACHE_ENABLED true
-#define CONFIG_DEFERRED_RECLAIM 0
-
-#endif // TARGET_OS_SIMULATOR || (MALLOC_TARGET_IOS && !MALLOC_TARGET_64BIT)
-#endif // CONFIG_LARGE_CACHE
+#endif
 
 #if MALLOC_TARGET_IOS
 // The VM system on iOS forces malloc-tagged memory to never be marked as
@@ -171,9 +153,4 @@
 #define CONFIG_PGM_WRAP_CUSTOM_ZONES 0
 #endif
 
-
-#ifndef MALLOC_ZERO_ON_FREE_ENABLED_DEFAULT
-#define MALLOC_ZERO_ON_FREE_ENABLED_DEFAULT true
-#endif
-
 #endif // __PLATFORM_H