hg: jdk/hs: 8199793: [Graal] runtime/CommandLine/PrintTouchedMethods.java crashes with assertion "reference count underflow for symbol"

[ioi.lam at oracle.com]

Changeset: 537ef53e26af
Author:    iklam
Date:      2018-03-26 17:40 -0700
URL:       http://hg.openjdk.java.net/jdk/hs/rev/537ef53e26af

8199793: [Graal] runtime/CommandLine/PrintTouchedMethods.java crashes with assertion "reference count underflow for symbol"
Summary: Remove Symbol::set_permanent to avoid possible race conditions
Reviewed-by: coleenp, dholmes, thartmann

! src/hotspot/share/oops/method.cpp
! src/hotspot/share/oops/symbol.hpp