VMThrowable.java (getStackTrace): Pass trace as-is to modified lookup().

* java/lang/VMThrowable.java (getStackTrace): Pass trace as-is to
	modified lookup().
	* gnu/gcj/runtime/NameFinder.java (lookup): Change to take in a
	StackTraceElement directly.
	(newElement): New native helper method to create StackTraceElement
	bypassing Java access control.
	(createStackTraceElement): Use newElement() instead of directly
	calling StackTraceElement's constructor.
	* gnu/gcj/runtime/natNameFinder.cc (newElement): New method.

From-SVN: r80541

libjava/gnu/gcj/runtime/NameFinder.java

@@ -1,5 +1,5 @@
 /* NameFinder.java -- Translates addresses to StackTraceElements.
-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
 
    This file is part of libgcj.
 
@@ -241,8 +241,11 @@ public class NameFinder
    * Given an Throwable and a native stacktrace returns an array of
    * StackTraceElement containing class, method, file and linenumbers.
    */
-  public StackTraceElement[] lookup(Throwable t, RawData addrs, int length)
+  public StackTraceElement[] lookup(Throwable t, StackTrace trace)
   {
+    RawData addrs = trace.stackTraceAddrs();
+    int length = trace.length();
+
     StackTraceElement[] elements = new StackTraceElement[length];
     for (int i=0; i < length; i++)
       elements[i] = lookup(addrs, i);
@@ -352,6 +355,16 @@ public class NameFinder
     return stack;
   }
 
+  /**
+   * Native helper method to create a StackTraceElement. Needed to work
+   * around normal Java access restrictions.
+   */
+  native private StackTraceElement newElement(String fileName,
+                                              int lineNumber,
+                                              String className,
+                                              String methName,
+                                              boolean isNative);
+
   /**
    * Creates a StackTraceElement given a string and a filename.
    * Splits the given string into the class and method part.
@@ -363,7 +376,7 @@ public class NameFinder
   private StackTraceElement createStackTraceElement(String name, String file)
   {
     if (!demangle)
-      return new StackTraceElement(file, -1, null, name, false);
+      return newElement(file, -1, null, name, false);
 
     String s = demangleName(name);
     String methodName = s;
@@ -409,7 +422,7 @@ public class NameFinder
 	  }
       }
 
-    return new StackTraceElement(fileName, line, className, methodName, false);
+    return newElement(fileName, line, className, methodName, false);
   }
 
   /**