docs/attachments/LUCENE-7135/LUCENE-7135.diff

From d7fc8bd912b9e86caad962bd85a9ed8a705803fc Mon Sep 17 00:00:00 2001
From: Aaron Madlon-Kay <aaron@madlon-kay.com>
Date: Thu, 24 Mar 2016 15:30:01 +0900
Subject: [PATCH] Don't fail to initialize Constants due to SecurityException.
 Detecting the bitness of the JRE attempts to access sun.arch.data.model,
 which causes an AccessControlException when running under WebStart.

---
 .../src/java/org/apache/lucene/util/Constants.java     | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/lucene/core/src/java/org/apache/lucene/util/Constants.java b/lucene/core/src/java/org/apache/lucene/util/Constants.java
index 4a4b494..77882a6 100644
--- a/lucene/core/src/java/org/apache/lucene/util/Constants.java
+++ b/lucene/core/src/java/org/apache/lucene/util/Constants.java
@@ -68,15 +68,17 @@ public final class Constants {
       JVM_MINOR_VERSION = 0;
     }
     boolean is64Bit = false;
-    final String x = System.getProperty("sun.arch.data.model");
-    if (x != null) {
-      is64Bit = x.contains("64");
-    } else {
-      if (OS_ARCH != null && OS_ARCH.contains("64")) {
-        is64Bit = true;
-      } else {
-        is64Bit = false;
+    String datamodel = null;
+    try {
+      datamodel = System.getProperty("sun.arch.data.model");
+      if (datamodel != null) {
+        is64Bit = datamodel.contains("64");
       }
+    } catch (SecurityException ex) {}
+    if (datamodel == null && OS_ARCH != null && OS_ARCH.contains("64")) {
+      is64Bit = true;
+    } else {
+      is64Bit = false;
     }
     JRE_IS_64BIT = is64Bit;
   }
-- 
2.7.1