diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index 918f99f087d..151ee652554 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,13 @@
+2005-01-13  Michael Koch  <konqueror@gmx.de>
+
+	PR libgcj/17784
+	* java/lang/Thread.java
+	(Thread): Call checkAccess().
+	(stop): Fixed argument name to match javadoc.
+	* java/lang/natThread.cc
+	(interrupt): Call checkAccess().
+	(stop): Likewise.
+
 2005-01-11  Michael Koch  <konqueror@gmx.de>
 
 	PR libgcj/13972
diff --git a/libjava/java/lang/Thread.java b/libjava/java/lang/Thread.java
index 5f3940f8462..ef4a3f472f0 100644
--- a/libjava/java/lang/Thread.java
+++ b/libjava/java/lang/Thread.java
@@ -1,5 +1,5 @@
 /* Thread -- an independent thread of executable code
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
    Free Software Foundation
 
 This file is part of GNU Classpath.
@@ -36,6 +36,7 @@ this exception to your version of the library, but you are not
 obligated to do so.  If you do not wish to do so, delete this
 exception statement from your version. */
 
+
 package java.lang;
 
 import gnu.gcj.RawData;
@@ -321,6 +322,9 @@ public class Thread implements Runnable
 
   private Thread (Thread current, ThreadGroup g, Runnable r, String n)
   {
+    // Make sure the current thread may create a new thread.
+    checkAccess();
+    
     // The Class Libraries book says ``threadName cannot be null''.  I
     // take this to mean NullPointerException.
     if (n == null)
@@ -862,7 +866,7 @@ public class Thread implements Runnable
    * @see SecurityManager#checkPermission(Permission)
    * @deprecated unsafe operation, try not to use
    */
-  public final native void stop(Throwable e);
+  public final native void stop(Throwable t);
 
   /**
    * Suspend this Thread.  It will not come back, ever, unless it is resumed.
diff --git a/libjava/java/lang/natThread.cc b/libjava/java/lang/natThread.cc
index 4782115d2cf..af33b0db353 100644
--- a/libjava/java/lang/natThread.cc
+++ b/libjava/java/lang/natThread.cc
@@ -112,6 +112,7 @@ java::lang::Thread::holdsLock (jobject obj)
 void
 java::lang::Thread::interrupt (void)
 {
+  checkAccess ();
   natThread *nt = (natThread *) data;
   _Jv_ThreadInterrupt (nt->thread);
 }
@@ -321,6 +322,7 @@ java::lang::Thread::start (void)
 void
 java::lang::Thread::stop (java::lang::Throwable *)
 {
+  checkAccess ();
   throw new UnsupportedOperationException
     (JvNewStringLatin1 ("Thread.stop unimplemented"));
 }