$OpenBSD: patch-v8_src_base_platform_platform-posix_cc,v 1.3 2015/01/22 11:16:41 robert Exp $
--- v8/src/base/platform/platform-posix.cc.orig.port	Sat Dec  6 11:59:36 2014
+++ v8/src/base/platform/platform-posix.cc	Sun Dec  7 14:36:01 2014
@@ -259,6 +259,8 @@ int OS::GetCurrentThreadId() {
   return static_cast<int>(syscall(__NR_gettid));
 #elif V8_OS_ANDROID
   return static_cast<int>(gettid());
+#elif V8_OS_OPENBSD
+  return reinterpret_cast<uint64_t>(pthread_self());
 #else
   return static_cast<int>(pthread_self());
 #endif
