diff -r ae91b408310f libgo/runtime/print.c
--- a/libgo/runtime/print.c	Thu May 24 14:06:08 2012 -0700
+++ b/libgo/runtime/print.c	Fri May 25 11:20:33 2012 -0700
@@ -136,7 +136,7 @@
 runtime_printpc(void *p __attribute__ ((unused)))
 {
 	runtime_prints("PC=");
-	runtime_printhex((uint64)runtime_getcallerpc(p));
+	runtime_printhex((uint64)(uintptr)runtime_getcallerpc(p));
 }
 
 void