[gcjx] Patch: FYI: fix String +=

[Tom Tromey]

I'm checking this in on the gcjx branch.

This fixes String += by using stabilize_reference.

Tom

Index: ChangeLog
from  Tom Tromey  <tromey@redhat.com>
	* tree.cc (visit_op_assignment): Use stabilize_reference.

Index: tree.cc
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/Attic/tree.cc,v
retrieving revision 1.1.2.60
diff -u -r1.1.2.60 tree.cc
--- tree.cc 11 Oct 2005 01:25:41 -0000 1.1.2.60
+++ tree.cc 11 Oct 2005 01:41:37 -0000
@@ -1737,9 +1737,9 @@
   model_class *sb_class;
   tree buffer_tree = create_stringbuffer (&sb_class, elt);
 
-  // Wrap the LHS in a SAVE_EXPR so we only evaluate it once.
+  // Wrap the LHS so we only evaluate it once.
   lhs->visit (this);
-  tree lhs_tree = save_expr (current);
+  tree lhs_tree = stabilize_reference (current);
 
   // Add the LHS and RHS to the StringBuffer.
   stringbuffer_append (lhs.get (), buffer_tree, sb_class, lhs_tree);