Index: pthread_dbg.c
===================================================================
RCS file: /cvsroot/src/lib/libpthread_dbg/pthread_dbg.c,v
retrieving revision 1.44
diff -u -r1.44 pthread_dbg.c
--- pthread_dbg.c	23 Jan 2016 14:02:21 -0000	1.44
+++ pthread_dbg.c	20 Nov 2016 02:20:14 -0000
@@ -210,7 +210,7 @@
 {
 	int tmp, val;
 
-	val = READ(thread->proc, thread->addr, &tmp, sizeof(tmp));
+	val = READ(thread->proc, OFFSET(thread, pt_magic), &tmp, sizeof(tmp));
 	if (val != 0)
 		return val;