re PR java/19285 (Interfaces not initialized by static field access)

2005-04-27  Andrew Haley  <aph@redhat.com>

        PR java/19285
        * prims.cc (_Jv_ResolvePoolEntry): New function.
        * include/jvm.h (_Jv_Linker::find_field): New arg: found_class.
        * link.cc (_Jv_Linker::find_field): New arg: found_class.
        (resolve_pool_entry): Initialize the class in which a field is
        found.
        (link_symbol_table): Pass new arg to found_class.

From-SVN: r99006

libjava/ChangeLog

@@ -1,3 +1,13 @@
+2005-04-27  Andrew Haley  <aph@redhat.com>
+
+	PR java/19285
+	* prims.cc (_Jv_ResolvePoolEntry): New function.
+	* include/jvm.h (_Jv_Linker::find_field): New arg: found_class.
+	* link.cc (_Jv_Linker::find_field): New arg: found_class.
+	(resolve_pool_entry): Initialize the class in which a field is
+	found.
+	(link_symbol_table): Pass new arg to found_class.
+
 2005-04-29  Michael Koch  <konqueror@gmx.de>
 
 	* java/nio/charset/Charset.java

libjava/include/jvm.h

@@ -238,7 +238,7 @@ class _Jv_Linker
 private:
   static _Jv_Field *find_field_helper(jclass, _Jv_Utf8Const *, _Jv_Utf8Const *,
 				      jclass *);
-  static _Jv_Field *find_field(jclass, jclass, _Jv_Utf8Const *,
+  static _Jv_Field *find_field(jclass, jclass, jclass *, _Jv_Utf8Const *,
 			       _Jv_Utf8Const *);
   static void prepare_constant_time_tables(jclass);
   static jshort get_interfaces(jclass, _Jv_ifaces *);

libjava/link.cc

@@ -165,11 +165,14 @@ _Jv_Linker::has_field_p (jclass search, _Jv_Utf8Const *field_name)
 // KLASS is the class that is requesting the field.
 // OWNER is the class in which the field should be found.
 // FIELD_TYPE_NAME is the type descriptor for the field.
+// Fill FOUND_CLASS with the address of the class in which the field
+// is actually declared.
 // This function does the class loader type checks, and
 // also access checks.  Returns the field, or throws an
 // exception on error.
 _Jv_Field *
 _Jv_Linker::find_field (jclass klass, jclass owner,
+			jclass *found_class,
 			_Jv_Utf8Const *field_name,
 			_Jv_Utf8Const *field_type_name)
 {
@@ -180,9 +183,8 @@ _Jv_Linker::find_field (jclass klass, jclass owner,
   if (field_type == NULL)
     throw new java::lang::NoClassDefFoundError(field_name->toString());
 
-  jclass found_class = 0;
   _Jv_Field *the_field = find_field_helper (owner, field_name,
-					    field_type->name, &found_class);
+					    field_type->name, found_class);
 
   if (the_field == 0)
     {
@@ -195,7 +197,7 @@ _Jv_Linker::find_field (jclass klass, jclass owner,
       throw new java::lang::NoSuchFieldError (sb->toString());
     }
 
-  if (_Jv_CheckAccess (klass, found_class, the_field->flags))
+  if (_Jv_CheckAccess (klass, *found_class, the_field->flags))
     {
       // Note that the field returned by find_field_helper is always
       // resolved.  There's no point checking class loaders here,
@@ -212,7 +214,7 @@ _Jv_Linker::find_field (jclass klass, jclass owner,
 	= new java::lang::StringBuffer ();
       sb->append(klass->getName());
       sb->append(JvNewStringLatin1(": "));
-      sb->append(found_class->getName());
+      sb->append((*found_class)->getName());
       sb->append(JvNewStringLatin1("."));
       sb->append(_Jv_NewStringUtf8Const (field_name));
       throw new java::lang::IllegalAccessError(sb->toString());
@@ -300,9 +302,13 @@ _Jv_Linker::resolve_pool_entry (jclass klass, int index)
 	_Jv_Utf8Const *field_name = pool->data[name_index].utf8;
 	_Jv_Utf8Const *field_type_name = pool->data[type_index].utf8;
 
-	_Jv_Field *the_field = find_field (klass, owner, field_name,
+	jclass found_class = 0;
+	_Jv_Field *the_field = find_field (klass, owner, 
+					   &found_class,
+					   field_name,
 					   field_type_name);
-
+	if (owner != found_class)
+	  _Jv_InitClass (found_class);
 	pool->data[index].field = the_field;
 	pool->tags[index] |= JV_CONSTANT_ResolvedFlag;
       }
@@ -967,7 +973,8 @@ _Jv_Linker::link_symbol_table (jclass klass)
       // Try fields.
       {
 	wait_for_state(target_class, JV_STATE_PREPARED);
-	_Jv_Field *the_field = find_field (klass, target_class,
+	jclass found_class;
+	_Jv_Field *the_field = find_field (klass, target_class, &found_class,
 					   sym.name, sym.signature);
 	if ((the_field->flags & java::lang::reflect::Modifier::STATIC))
 	  throw new java::lang::IncompatibleClassChangeError;
@@ -1047,7 +1054,8 @@ _Jv_Linker::link_symbol_table (jclass klass)
       // Try fields.
       {
 	wait_for_state(target_class, JV_STATE_PREPARED);
-	_Jv_Field *the_field = find_field (klass, target_class,
+	jclass found_class;
+	_Jv_Field *the_field = find_field (klass, target_class, &found_class,
 					   sym.name, sym.signature);
 	if ((the_field->flags & java::lang::reflect::Modifier::STATIC))
 	  klass->atable->addresses[index] = the_field->u.addr;

libjava/prims.cc

@@ -359,6 +359,22 @@ _Jv_ThrowNullPointerException ()
   throw new java::lang::NullPointerException;
 }
 
+// Resolve an entry in the constant pool and return the target
+// address.
+void *
+_Jv_ResolvePoolEntry (jclass this_class, jint index)
+{
+  _Jv_Constants *pool = &this_class->constants;
+
+  if ((pool->tags[index] & JV_CONSTANT_ResolvedFlag) != 0)
+    return pool->data[index].field->u.addr;
+
+  JvSynchronize sync (this_class);
+  return (_Jv_Linker::resolve_pool_entry (this_class, index))
+    .field->u.addr;
+}
+
+
 // Explicitly throw a no memory exception.
 // The collector calls this when it encounters an out-of-memory condition.
 void _Jv_ThrowNoMemory()