--- libmalloc/libmalloc-521.120.7/src/purgeable_malloc.c
+++ libmalloc/libmalloc-283/src/purgeable_malloc.c
@@ -80,7 +80,7 @@
 	entry = large_entry_for_pointer_no_lock(szone, ptr);
 	SZONE_UNLOCK(szone);
 	if (entry) {
-		return (void)free_large(szone, ptr, false);
+		return free_large(szone, ptr);
 	} else {
 		return szone_free(szone->helper_zone, ptr);
 	}
@@ -214,7 +214,9 @@
 	szone_t *szone;
 	kern_return_t err;
 
-	reader = reader_or_in_memory_fallback(reader, task);
+	if (!reader) {
+		reader = _malloc_default_reader;
+	}
 
 	err = reader(task, zone_address, sizeof(szone_t), (void **)&szone);
 	if (err) {
@@ -352,7 +354,7 @@
 	uint64_t hw_memsize = 0;
 
 	/* get memory for the zone. */
-	szone = mvm_allocate_pages(SZONE_PAGED_SIZE, 0, DISABLE_ASLR, VM_MEMORY_MALLOC);
+	szone = mvm_allocate_pages(SZONE_PAGED_SIZE, 0, 0, VM_MEMORY_MALLOC);
 	if (!szone) {
 		return NULL;
 	}
@@ -375,17 +377,15 @@
 	rack_init(&szone->small_rack, RACK_TYPE_SMALL, 0, debug_flags | MALLOC_PURGEABLE);
 
 #if CONFIG_LARGE_CACHE
-	if (large_cache_enabled) {
-		// madvise(..., MADV_REUSABLE) death-row arrivals above this threshold [~0.1%]
-		szone->large_entry_cache_reserve_limit = (size_t)(hw_memsize >> 10);
-
-		/* <rdar://problem/6610904> Reset protection when returning a previous large allocation? */
-		int32_t libSystemVersion = NSVersionOfLinkTimeLibrary("System");
-		if ((-1 != libSystemVersion) && ((libSystemVersion >> 16) < 112) /* CFSystemVersionSnowLeopard */) {
-			szone->large_legacy_reset_mprotect = TRUE;
-		} else {
-			szone->large_legacy_reset_mprotect = FALSE;
-		}
+	// madvise(..., MADV_REUSABLE) death-row arrivals above this threshold [~0.1%]
+	szone->large_entry_cache_reserve_limit = (size_t)(hw_memsize >> 10);
+
+	/* <rdar://problem/6610904> Reset protection when returning a previous large allocation? */
+	int32_t libSystemVersion = NSVersionOfLinkTimeLibrary("System");
+	if ((-1 != libSystemVersion) && ((libSystemVersion >> 16) < 112) /* CFSystemVersionSnowLeopard */) {
+		szone->large_legacy_reset_mprotect = TRUE;
+	} else {
+		szone->large_legacy_reset_mprotect = FALSE;
 	}
 #endif
 
@@ -412,13 +412,11 @@
 	szone->debug_flags = debug_flags | MALLOC_PURGEABLE;
 
 	/* Purgeable zone does not support MALLOC_ADD_GUARD_PAGES. */
-	if (szone->debug_flags & MALLOC_ALL_GUARD_PAGE_FLAGS) {
-		if (!(szone->debug_flags & MALLOC_GUARD_ALL)) {
-			// Don't report when MallocGuardEdges == "all".
-			malloc_report(ASL_LEVEL_INFO, "purgeable zone does not support guard pages\n");
-		}
-		szone->debug_flags &= ~MALLOC_ALL_GUARD_PAGE_FLAGS;
-	}
+	if (szone->debug_flags & MALLOC_ADD_GUARD_PAGES) {
+		malloc_report(ASL_LEVEL_INFO, "purgeable zone does not support guard pages\n");
+		szone->debug_flags &= ~MALLOC_ADD_GUARD_PAGES;
+	}
+
 	_malloc_lock_init(&szone->large_szone_lock);
 
 	szone->helper_zone = (struct szone_s *)malloc_default_zone;