$OpenBSD: patch-base_memory_protected_memory_posix_cc,v 1.1 2019/09/23 07:18:03 robert Exp $

Index: base/memory/protected_memory_posix.cc
--- base/memory/protected_memory_posix.cc.orig
+++ base/memory/protected_memory_posix.cc
@@ -44,7 +44,7 @@ bool AutoWritableMemory::SetMemoryReadOnly(void* start
   return SetMemory(start, end, PROT_READ);
 }
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_BSD)
 void AssertMemoryIsReadOnly(const void* ptr) {
 #if DCHECK_IS_ON()
   const uintptr_t page_mask = ~(base::GetPageSize() - 1);
