--- libmalloc/libmalloc-317.40.8/private/malloc_private.h
+++ libmalloc/libmalloc-166.220.1/private/malloc_private.h
@@ -76,40 +76,4 @@
 API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
 int malloc_engaged_nano(void) __result_use_check;
 
-
-/********* PGuard ************/
-
-const static uint32_t k_pguard_trace_max_frames = 16;
-
-typedef struct {
-	uint64_t thread_id;
-	uint32_t num_frames;
-	vm_address_t frames[k_pguard_trace_max_frames];
-} stack_trace_t;
-
-typedef struct {
-	// diagnose_page_fault
-	const char *error_type;
-	const char *confidence;
-	vm_address_t fault_address;
-	// fill_in_report
-	vm_address_t nearest_allocation;
-	size_t allocation_size;
-	const char *allocation_state;
-	uint32_t num_traces;
-	stack_trace_t alloc_trace;
-	stack_trace_t dealloc_trace;
-} pguard_report_t;
-typedef pguard_report_t pgm_report_t;
-
-/**
- * Like memory_reader_t, but caller must free returned memory if not NULL.
- */
-typedef void *(*crash_reporter_memory_reader_t)(task_t task, vm_address_t address, size_t size);
-
-API_AVAILABLE(macos(10.16), ios(14.0), tvos(14.0), watchos(7.0))
-kern_return_t pgm_diagnose_fault_from_crash_reporter(vm_address_t fault_address, pgm_report_t *report,
-		task_t task, vm_address_t zone_address, crash_reporter_memory_reader_t crm_reader) __result_use_check;
-
-
 #endif /* _MALLOC_PRIVATE_H_ */