From 70c239f74a9351e32b0a3b7bf3db8b04d98c0255 Mon Sep 17 00:00:00 2001
From: brutisso <unknown>
Date: Thu, 10 May 2012 14:16:34 +0200
Subject: [PATCH] 7167069: 6 VM flags crash the VM when queried via jinfo
 Summary: Added missing double format to Flag::print_as_flag() Reviewed-by:
 dholmes, stefank, coleenp

---
 src/share/vm/runtime/globals.cpp      |  2 ++
 test/runtime/7167069/PrintAsFlag.java | 38 +++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 test/runtime/7167069/PrintAsFlag.java

diff --git a/src/share/vm/runtime/globals.cpp b/src/share/vm/runtime/globals.cpp
index 02d105733..474090a2a 100644
--- a/src/share/vm/runtime/globals.cpp
+++ b/src/share/vm/runtime/globals.cpp
@@ -148,6 +148,8 @@ void Flag::print_as_flag(outputStream* st) {
     st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
   } else if (is_uint64_t()) {
     st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t());
+  } else if (is_double()) {
+    st->print("-XX:%s=%f", name, get_double());
   } else if (is_ccstr()) {
     st->print("-XX:%s=", name);
     const char* cp = get_ccstr();
diff --git a/test/runtime/7167069/PrintAsFlag.java b/test/runtime/7167069/PrintAsFlag.java
new file mode 100644
index 000000000..bf8747ec5
--- /dev/null
+++ b/test/runtime/7167069/PrintAsFlag.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/*
+ * Note that in the run command below the only important flag is PrintCommandLineFlags.
+ * The others are just flags of all types; bool, intx, uintx, uint64_t, double and ccstr.
+ *
+ * @test PrintAsFlag
+ * @summary verify that Flag::print_as_flag() works correctly. This is used by "jinfo -flag" and -XX:+PrintCommandLineFlags.
+ * @run main/othervm -XX:+PrintCommandLineFlags -XX:-ShowMessageBoxOnError -XX:BiasedLockingStartupDelay=4000 -XX:ParallelGCThreads=4 -XX:MaxRAM=1G -XX:CMSSmallCoalSurplusPercent=1.05 -XX:ErrorFile="file" PrintAsFlag
+ */
+
+public class PrintAsFlag {
+  public static void main(String... args) {
+    System.out.printf("Done");
+  }
+}
-- 
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