$OpenBSD: patch-bfd_elf_c,v 1.7 2015/09/09 19:47:17 pascal Exp $
--- bfd/elf.c.orig	Fri Aug 28 23:22:06 2015
+++ bfd/elf.c	Tue Sep  1 10:51:15 2015
@@ -9309,6 +9309,11 @@ elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal
 static bfd_boolean
 elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note)
 {
+  int lwp;
+
+  if (elfcore_netbsd_get_lwpid (note, &lwp))
+    elf_tdata (abfd)->core->lwpid = lwp;
+
   if (note->type == NT_OPENBSD_PROCINFO)
     return elfcore_grok_openbsd_procinfo (abfd, note);
 
