--- libmalloc/libmalloc-166.251.2/src/malloc.c
+++ libmalloc/libmalloc-166.200.60/src/malloc.c
@@ -121,12 +121,6 @@
 // Boot argument for max magazine control
 static const char max_magazines_boot_arg[] = "malloc_max_magazines";
 
-#if CONFIG_MEDIUM_ALLOCATOR
-static const char medium_enabled_boot_arg[] = "malloc_medium_zone";
-static const char max_medium_magazines_boot_arg[] = "malloc_max_medium_magazines";
-static const char medium_activation_threshold_boot_arg[] = "malloc_medium_activation_threshold";
-#endif // CONFIG_MEDIUM_ALLOCATOR
-
 /*********	Utilities	************/
 static bool _malloc_entropy_initialized;
 
@@ -183,44 +177,6 @@
 						   "malloc_max_magazines must be positive - ignored.\n");
 		}
 	}
-
-#if CONFIG_MEDIUM_ALLOCATOR
-	flag = malloc_common_value_for_key_copy(bootargs, medium_enabled_boot_arg,
-			value_buf, sizeof(value_buf));
-	if (flag) {
-		const char *endp;
-		long value = malloc_common_convert_to_long(flag, &endp);
-		if (!*endp) {
-			magazine_medium_enabled = (value != 0);
-		}
-	}
-
-	flag = malloc_common_value_for_key_copy(bootargs,
-			medium_activation_threshold_boot_arg, value_buf, sizeof(value_buf));
-	if (flag) {
-		const char *endp;
-		long value = malloc_common_convert_to_long(flag, &endp);
-		if (!*endp && value >= 0) {
-			magazine_medium_active_threshold = (uint64_t)value;
-		} else {
-			malloc_report(ASL_LEVEL_ERR,
-					"malloc_medium_activation_threshold must be positive - ignored.\n");
-		}
-	}
-
-	flag = malloc_common_value_for_key_copy(bootargs,
-			max_medium_magazines_boot_arg, value_buf, sizeof(value_buf));
-	if (flag) {
-		const char *endp;
-		long value = malloc_common_convert_to_long(flag, &endp);
-		if (!*endp && value >= 0) {
-			max_medium_magazines = (int)value;
-		} else {
-			malloc_report(ASL_LEVEL_ERR,
-					"malloc_max_medium_magazines must be positive - ignored.\n");
-		}
-	}
-#endif // CONFIG_MEDIUM_ALLOCATOR
 }
 
 /* TODO: Investigate adding _malloc_initialize() into this libSystem initializer */
@@ -914,14 +870,6 @@
 		max_magazines = logical_ncpus;
 	}
 
-	// similiarly, cap medium magazines at logical_ncpus but don't cap it by
-	// the max magazines if it has been set explicitly
-	if (max_medium_magazines) {
-		max_medium_magazines = MIN(max_medium_magazines, logical_ncpus);
-	} else {
-		max_medium_magazines = max_magazines;
-	}
-
 	set_flags_from_environment(); // will only set flags up to two times
 	n = malloc_num_zones;
 
@@ -1062,10 +1010,8 @@
 static void *
 legacy_zeroing_large_malloc(malloc_zone_t *zone, size_t size)
 {
-	if (size > LEGACY_ZEROING_THRESHOLD) {
-		// Leopard and earlier returned a ZFOD range, so clear to zero always,
-		// ham-handedly touching in each page
-		return default_zone_calloc(zone, 1, size);
+	if (size > LARGE_THRESHOLD) {			 // Leopard and earlier returned a ZFOD range, so ...
+		return default_zone_calloc(zone, 1, size); // Clear to zero always, ham-handedly touching in each page
 	} else {
 		return default_zone_malloc(zone, size);
 	}
@@ -1311,48 +1257,6 @@
 			malloc_report(ASL_LEVEL_INFO, "Maximum magazines set to %d\n", max_magazines);
 		}
 	}
-
-#if CONFIG_MEDIUM_ALLOCATOR
-	flag = getenv("MallocMediumZone");
-	if (flag) {
-		int value = (unsigned)strtol(flag, NULL, 0);
-		if (value == 0) {
-			magazine_medium_enabled = false;
-		} else if (value == 1) {
-			magazine_medium_enabled = true;
-		}
-	}
-
-	flag = getenv("MallocMediumActivationThreshold");
-	if (flag) {
-		uint64_t value = (uint64_t)strtoull(flag, NULL, 0);
-		if (value == 0) {
-			malloc_report(ASL_LEVEL_INFO, "Medium activation threshold defaulted to %lly\n", magazine_medium_active_threshold);
-		} else if (value < 0) {
-			malloc_report(ASL_LEVEL_ERR, "MallocMediumActivationThreshold must be positive - ignored.\n");
-		} else {
-			magazine_medium_active_threshold = value;
-			malloc_report(ASL_LEVEL_INFO, "Medium activation threshold set to %lly\n", magazine_medium_active_threshold);
-		}
-	}
-
-	flag = getenv("MallocMaxMediumMagazines");
-	if (flag) {
-		int value = (unsigned)strtol(flag, NULL, 0);
-		if (value == 0) {
-			malloc_report(ASL_LEVEL_INFO, "Maximum medium magazines defaulted to %d\n", max_magazines);
-		} else if (value < 0) {
-			malloc_report(ASL_LEVEL_ERR, "MallocMaxMediumMagazines must be positive - ignored.\n");
-		} else if (value > logical_ncpus) {
-			max_medium_magazines = logical_ncpus;
-			malloc_report(ASL_LEVEL_INFO, "Maximum medium magazines limited to number of logical CPUs (%d)\n", max_medium_magazines);
-		} else {
-			max_medium_magazines = value;
-			malloc_report(ASL_LEVEL_INFO, "Maximum medium magazines set to %d\n", max_medium_magazines);
-		}
-	}
-#endif // CONFIG_MEDIUM_ALLOCATOR
-
 #if CONFIG_RECIRC_DEPOT
 	flag = getenv("MallocRecircRetainedRegions");
 	if (flag) {
@@ -1876,9 +1780,9 @@
 	} else {
 		zone = find_registered_zone(old_ptr, NULL);
 		if (!zone) {
-			int flags = MALLOC_REPORT_DEBUG | MALLOC_REPORT_NOLOG;
+			int flags = MALLOC_REPORT_DEBUG;
 			if (malloc_debug_flags & (MALLOC_ABORT_ON_CORRUPTION | MALLOC_ABORT_ON_ERROR)) {
-				flags = MALLOC_REPORT_CRASH | MALLOC_REPORT_NOLOG;
+				flags = MALLOC_REPORT_CRASH;
 			}
 			malloc_report(flags, "*** error for object %p: pointer being realloc'd was not allocated\n", in_ptr);
 		} else {