$OpenBSD: patch-v8_src_base_platform_platform-posix_cc,v 1.14 2021/04/01 10:24:46 robert Exp $

Index: v8/src/base/platform/platform-posix.cc
--- v8/src/base/platform/platform-posix.cc.orig
+++ v8/src/base/platform/platform-posix.cc
@@ -266,8 +266,15 @@ void OS::SetRandomMmapSeed(int64_t seed) {
   }
 }
 
+#if V8_OS_OPENBSD
+// Allow OpenBSD's mmap to select a random address on OpenBSD
 // static
 void* OS::GetRandomMmapAddr() {
+  return nullptr;
+}
+#else
+// static
+void* OS::GetRandomMmapAddr() {
   uintptr_t raw_addr;
   {
     MutexGuard guard(rng_mutex.Pointer());
@@ -350,6 +357,7 @@ void* OS::GetRandomMmapAddr() {
 #endif
   return reinterpret_cast<void*>(raw_addr);
 }
+#endif
 
 // TODO(bbudge) Move Cygwin and Fuchsia stuff into platform-specific files.
 #if !V8_OS_CYGWIN && !V8_OS_FUCHSIA
@@ -464,7 +472,7 @@ bool OS::DiscardSystemPages(void* address, size_t size
 
 // static
 bool OS::HasLazyCommits() {
-#if V8_OS_AIX || V8_OS_LINUX || V8_OS_MACOSX
+#if V8_OS_AIX || V8_OS_LINUX || V8_OS_MACOSX || V8_OS_OPENBSD
   return true;
 #else
   // TODO(bbudge) Return true for all POSIX platforms.
@@ -1000,7 +1008,7 @@ void Thread::SetThreadLocal(LocalStorageKey key, void*
 // keep this version in POSIX as most Linux-compatible derivatives will
 // support it. MacOS and FreeBSD are different here.
 #if !defined(V8_OS_FREEBSD) && !defined(V8_OS_MACOSX) && !defined(_AIX) && \
-    !defined(V8_OS_SOLARIS)
+    !defined(V8_OS_SOLARIS) && !defined(V8_OS_OPENBSD)
 
 // static
 Stack::StackSlot Stack::GetStackStart() {
