$OpenBSD: patch-os_dep_c,v 1.3 2003/01/17 21:00:45 drahn Exp $
--- os_dep.c.orig	Wed Jul 31 17:13:18 2002
+++ os_dep.c	Thu Jan  9 16:14:45 2003
@@ -233,6 +233,18 @@ static void *tiny_sbrk(ptrdiff_t increme
   }
 #endif
 
+#if defined(OPENBSD) && defined(__ELF__)
+  ptr_t GC_data_start;
+
+  void GC_init_openbsd_elf()
+  {
+    extern ptr_t GC_find_limit();
+	/* This may need to be environ, without the underscore, for	*/
+	/* some versions.						*/
+    GC_data_start = GC_find_limit((ptr_t)&end, FALSE);
+  }
+#endif
+
 # ifdef OS2
 
 # include <stddef.h>
