[PATCH] Fix PR64044

The following fixes an issue I found when more aggressively 
constant-folding from static initializers.  The Java frontend
fails to provide an initializer for the classdollar field
it creates but nevertheless marks them with TREE_READONLY
whilst being static.

Thus the following patch removes setting of TREE_READONLY.

Bootstrap & regtest running on x86_64-unknown-linux-gnu.

Ok?

Thanks,
Richard.

2014-11-24  Richard Biener  <[email protected]>

	PR java/64004
	* class.c (build_classdollar_field): Do not set TREE_READONLY.

Index: gcc/java/class.c
===================================================================
--- gcc/java/class.c	(revision 218010)
+++ gcc/java/class.c	(working copy)
@@ -1085,7 +1085,6 @@ build_classdollar_field (tree type)
 			TYPE_QUAL_CONST)));
       TREE_STATIC (decl) = 1;
       TREE_CONSTANT (decl) = 1;
-      TREE_READONLY (decl) = 1;
       TREE_PUBLIC (decl) = 1;
       java_hide_decl (decl);
       DECL_IGNORED_P (decl) = 1;