More for PR libgcj/11737:

	* java/io/ObjectInputStream.java (processResolution): Use
	getMethod.
	(getMethod): Make method accessible.
	(getField): Make field accessible.
	(setBooleanField): Don't call setAccessible here.
	(setByteField, setCharField, setDoubleField, setFloatField,
	setIntField, setLongField, setShortField, setObjectField):
	Likewise.
	(callReadMethod): Don't check whether method is null.  Catch
	NoSuchMethodException.
	* java/io/ObjectOutputStream.java (callWriteMethod): Initialize
	cause on thrown exceptions.

From-SVN: r70038

libjava/ChangeLog

+2003-07-31  Tom Tromey  <tromey@redhat.com>
+
+	More for PR libgcj/11737:
+	* java/io/ObjectInputStream.java (processResolution): Use
+	getMethod.
+	(getMethod): Make method accessible.
+	(getField): Make field accessible.
+	(setBooleanField): Don't call setAccessible here.
+	(setByteField, setCharField, setDoubleField, setFloatField,
+	setIntField, setLongField, setShortField, setObjectField):
+	Likewise.
+	(callReadMethod): Don't check whether method is null.  Catch
+	NoSuchMethodException.
+	* java/io/ObjectOutputStream.java (callWriteMethod): Initialize
+	cause on thrown exceptions.
+
 2003-07-31  Stepan Koltsov  <yozh@mx1.ru>
 
 	Fix for PR libgcj/11728:

libjava/java/io/ObjectInputStream.java

@@ -41,10 +41,13 @@ package java.io;
 import java.lang.reflect.Array;
 import java.lang.reflect.Modifier;
 import java.lang.reflect.Proxy;
+import java.security.PrivilegedAction;
+import java.security.AccessController;
 import java.util.Arrays;
 import java.util.Hashtable;
 import java.util.Vector;
 
+
 import gnu.java.io.ObjectIdentityWrapper;
 import gnu.java.lang.reflect.TypeSignature;
 import java.lang.reflect.Field;
@@ -1075,9 +1078,7 @@ public class ObjectInputStream extends InputStream
 	try
 	  {
 	    Class classArgs[] = {};
-	    m = obj.getClass ().getDeclaredMethod ("readResolve", classArgs);
-	    // m can't be null by definition since an exception would
-	    // have been thrown so a check for null is not needed.
+	    m = getMethod(obj.getClass(), "readResolve", classArgs);
 	    obj = m.invoke (obj, new Object[] {});	
 	  }
 	catch (NoSuchMethodException ignore)
@@ -1416,13 +1417,31 @@ public class ObjectInputStream extends InputStream
   private static Field getField (Class klass, String name)
     throws java.lang.NoSuchFieldException
   {
-    return klass.getDeclaredField(name);
+    final Field f = klass.getDeclaredField(name);
+    AccessController.doPrivileged(new PrivilegedAction()
+      {
+	public Object run()
+	{
+	  f.setAccessible(true);
+	  return null;
+	}
+      });
+    return f;
   }
 
   private static Method getMethod (Class klass, String name, Class args[])
     throws java.lang.NoSuchMethodException
   {
-    return klass.getDeclaredMethod(name, args);
+    final Method m = klass.getDeclaredMethod(name, args);
+    AccessController.doPrivileged(new PrivilegedAction()
+      {
+	public Object run()
+	{
+	  m.setAccessible(true);
+	  return null;
+	}
+      });
+    return m;
   }
 
   private void callReadMethod (Object obj, ObjectStreamClass osc) throws IOException
@@ -1432,11 +1451,13 @@ public class ObjectInputStream extends InputStream
       {
 	Class classArgs[] = {ObjectInputStream.class};
 	Method m = getMethod (klass, "readObject", classArgs);
-	if (m == null)
-	  return;
 	Object args[] = {this};
 	m.invoke (obj, args);
       }
+    catch (NoSuchMethodException nsme)
+      {
+	// Nothing.
+      }
     catch (InvocationTargetException x)
       {
         /* Rethrow if possible. */
@@ -1467,7 +1488,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setBoolean (obj, val);
       }
     catch (Exception _)
@@ -1481,7 +1501,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setByte (obj, val);
       }
     catch (Exception _)
@@ -1495,7 +1514,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setChar (obj, val);
       }
     catch (Exception _)
@@ -1509,7 +1527,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setDouble (obj, val);
       }
     catch (Exception _)
@@ -1523,7 +1540,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setFloat (obj, val);
       }
     catch (Exception _)
@@ -1537,7 +1553,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setInt (obj, val);
       }
     catch (Exception _)
@@ -1552,7 +1567,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setLong (obj, val);
       }
     catch (Exception _)
@@ -1567,7 +1581,6 @@ public class ObjectInputStream extends InputStream
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	f.setShort (obj, val);
       }
     catch (Exception _)
@@ -1576,13 +1589,12 @@ public class ObjectInputStream extends InputStream
   }
 
 
-  private void setObjectField (Object obj, Class klass, String field_name, String type_code,
-			       Object val)
+  private void setObjectField (Object obj, Class klass, String field_name,
+			       String type_code, Object val)
   {
     try
       {
 	Field f = getField (klass, field_name);
-	f.setAccessible(true);
 	// FIXME: We should check the type_code here
 	f.set (obj, val);
       }

libjava/java/io/ObjectOutputStream.java

@@ -1197,7 +1197,8 @@ public class ObjectOutputStream extends OutputStream
   }
 
 
-  private void callWriteMethod (Object obj, ObjectStreamClass osc) throws IOException
+  private void callWriteMethod (Object obj, ObjectStreamClass osc)
+    throws IOException
   {
     Class klass = osc.forClass();
     try
@@ -1220,13 +1221,19 @@ public class ObjectOutputStream extends OutputStream
 	if (exception instanceof IOException)
 	  throw (IOException) exception;
 
-	throw new IOException ("Exception thrown from writeObject() on " +
+	IOException ioe
+	  = new IOException ("Exception thrown from writeObject() on " +
 			     klass + ": " + exception.getClass().getName());
+	ioe.initCause(exception);
+	throw ioe;
       }
     catch (Exception x)
       {
-	throw new IOException ("Failure invoking writeObject() on " +
+	IOException ioe
+	  = new IOException ("Failure invoking writeObject() on " +
 			     klass + ": " + x.getClass().getName());
+	ioe.initCause(x);
+	throw ioe;
       }
   }