$OpenBSD: patch-os_dep_c,v 1.4 2003/10/15 12:58:11 todd Exp $
--- os_dep.c.orig	2003-06-14 05:11:00.000000000 +1000
+++ os_dep.c	2003-10-15 13:40:09.000000000 +1000
@@ -391,6 +391,18 @@ 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>