$OpenBSD: patch-kjs_collector_cpp,v 1.4 2010/06/18 11:14:42 espie Exp $
--- kjs/collector.cpp.orig	Tue Jul 28 21:44:08 2009
+++ kjs/collector.cpp	Sat May 29 13:55:42 2010
@@ -507,6 +507,12 @@ static inline void* currentThreadStackBase()
     static pthread_t stackThread;
     pthread_t thread = pthread_self();
     if (stackBase == 0 || thread != stackThread) {
+#if defined(__OpenBSD__)
+	stack_t sinfo;
+	pthread_stackseg_np(thread, &sinfo);
+	stackBase = (char *)sinfo.ss_sp - sinfo.ss_size;
+        stackThread = thread;
+#else
         pthread_attr_t sattr;
 #if HAVE(PTHREAD_NP_H) || defined(__NetBSD__)
         // e.g. on FreeBSD 5.4, neundorf@kde.org
@@ -525,6 +531,7 @@ static inline void* currentThreadStackBase()
         stackBase = (char *)stackBase + stackSize;      // a matter of interpretation, apparently...
         assert(stackBase);
         stackThread = thread;
+#endif
     }
 #else
 #error Need a way to get the stack base on this platform
