# HG changeset patch
# User lfoltan
# Date 1397593040 14400
#      Tue Apr 15 16:17:20 2014 -0400
# Node ID 088ea5eccf62f21f75b311f49102c1d27bc577f9
# Parent  f26d56905af0d3d8584d7ebc1e77c0515742286c
8036805: Correct linker method lookup.
Summary: Correct handling of array of primitive type qualifiers during field and method resolution.
Reviewed-by: acorn, hseigel, ahgross

diff -r f26d56905af0 -r 088ea5eccf62 src/share/vm/interpreter/linkResolver.cpp
--- openjdk/hotspot/src/share/vm/interpreter/linkResolver.cpp	Sat Oct 04 21:04:20 2014 +0100
+++ openjdk/hotspot/src/share/vm/interpreter/linkResolver.cpp	Tue Apr 15 16:17:20 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -245,6 +245,12 @@
 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) {
   Method* result_oop = klass->uncached_lookup_method(name, signature);
 
+  if (klass->oop_is_array()) {
+    // Only consider klass and super klass for arrays
+    result = methodHandle(THREAD, result_oop);
+    return;
+  }
+
   // JDK 8, JVMS 5.4.3.4: Interface method resolution should
   // ignore static and non-public methods of java.lang.Object,
   // like clone, finalize, registerNatives.
@@ -283,6 +289,11 @@
     result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature));
   }
 
+  if (klass->oop_is_array()) {
+    // Only consider klass and super klass for arrays
+    return;
+  }
+
   if (result.is_null()) {
     Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods();
     if (default_methods != NULL) {
@@ -539,7 +550,7 @@
   // 2. lookup method in resolved klass and its super klasses
   lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK);
 
-  if (resolved_method.is_null()) { // not found in the class hierarchy
+  if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { // not found in the class hierarchy
     // 3. lookup method in all the interfaces implemented by the resolved klass
     lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
 
@@ -552,16 +563,16 @@
         CLEAR_PENDING_EXCEPTION;
       }
     }
+  }
 
-    if (resolved_method.is_null()) {
-      // 4. method lookup failed
-      ResourceMark rm(THREAD);
-      THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(),
-                      Method::name_and_sig_as_C_string(resolved_klass(),
-                                                              method_name,
-                                                              method_signature),
-                      nested_exception);
-    }
+  if (resolved_method.is_null()) {
+    // 4. method lookup failed
+    ResourceMark rm(THREAD);
+    THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(),
+                    Method::name_and_sig_as_C_string(resolved_klass(),
+                                                            method_name,
+                                                            method_signature),
+                    nested_exception);
   }
 
   // 5. check if method is concrete
@@ -636,17 +647,18 @@
   // JDK8: also look for static methods
   lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK);
 
-  if (resolved_method.is_null()) {
+  if (resolved_method.is_null() && !resolved_klass->oop_is_array()) {
     // lookup method in all the super-interfaces
     lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
-    if (resolved_method.is_null()) {
-      // no method found
-      ResourceMark rm(THREAD);
-      THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
-                Method::name_and_sig_as_C_string(resolved_klass(),
-                                                        method_name,
-                                                        method_signature));
-    }
+  }
+
+  if (resolved_method.is_null()) {
+    // no method found
+    ResourceMark rm(THREAD);
+    THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
+              Method::name_and_sig_as_C_string(resolved_klass(),
+                                                      method_name,
+                                                      method_signature));
   }
 
   if (nostatics && resolved_method->is_static()) {
@@ -779,7 +791,7 @@
   }
 
   // Resolve instance field
-  KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd));
+  KlassHandle sel_klass(THREAD, resolved_klass->find_field(field, sig, &fd));
   // check if field exists; i.e., if a klass containing the field def has been selected
   if (sel_klass.is_null()) {
     ResourceMark rm(THREAD);
diff -r f26d56905af0 -r 088ea5eccf62 src/share/vm/oops/arrayKlass.cpp
--- openjdk/hotspot/src/share/vm/oops/arrayKlass.cpp	Sat Oct 04 21:04:20 2014 +0100
+++ openjdk/hotspot/src/share/vm/oops/arrayKlass.cpp	Tue Apr 15 16:17:20 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -64,6 +64,13 @@
   return NULL;
 }
 
+// find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined
+Klass* ArrayKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const {
+  // There are no fields in an array klass but look to the super class (Object)
+  assert(super(), "super klass must be present");
+  return super()->find_field(name, sig, fd);
+}
+
 Method* ArrayKlass::uncached_lookup_method(Symbol* name, Symbol* signature) const {
   // There are no methods in an array klass but the super class (Object) has some
   assert(super(), "super klass must be present");
diff -r f26d56905af0 -r 088ea5eccf62 src/share/vm/oops/arrayKlass.hpp
--- openjdk/hotspot/src/share/vm/oops/arrayKlass.hpp	Sat Oct 04 21:04:20 2014 +0100
+++ openjdk/hotspot/src/share/vm/oops/arrayKlass.hpp	Tue Apr 15 16:17:20 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,6 +28,7 @@
 #include "memory/universe.hpp"
 #include "oops/klass.hpp"
 
+class fieldDescriptor;
 class klassVtable;
 
 // ArrayKlass is the abstract baseclass for all array classes
@@ -85,6 +86,9 @@
   virtual oop multi_allocate(int rank, jint* sizes, TRAPS);
   objArrayOop allocate_arrayArray(int n, int length, TRAPS);
 
+  // find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined
+  Klass* find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const;
+
   // Lookup operations
   Method* uncached_lookup_method(Symbol* name, Symbol* signature) const;
 
diff -r f26d56905af0 -r 088ea5eccf62 src/share/vm/oops/klass.cpp
--- openjdk/hotspot/src/share/vm/oops/klass.cpp	Sat Oct 04 21:04:20 2014 +0100
+++ openjdk/hotspot/src/share/vm/oops/klass.cpp	Tue Apr 15 16:17:20 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -128,6 +128,15 @@
   return is_subclass_of(k);
 }
 
+Klass* Klass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const {
+#ifdef ASSERT
+  tty->print_cr("Error: find_field called on a klass oop."
+                " Likely error: reflection method does not correctly"
+                " wrap return value in a mirror object.");
+#endif
+  ShouldNotReachHere();
+  return NULL;
+}
 
 Method* Klass::uncached_lookup_method(Symbol* name, Symbol* signature) const {
 #ifdef ASSERT
diff -r f26d56905af0 -r 088ea5eccf62 src/share/vm/oops/klass.hpp
--- openjdk/hotspot/src/share/vm/oops/klass.hpp	Sat Oct 04 21:04:20 2014 +0100
+++ openjdk/hotspot/src/share/vm/oops/klass.hpp	Tue Apr 15 16:17:20 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -91,6 +91,7 @@
 class klassVtable;
 class ParCompactionManager;
 class KlassSizeStats;
+class fieldDescriptor;
 
 class Klass : public Metadata {
   friend class VMStructs;
@@ -421,6 +422,7 @@
   virtual void initialize(TRAPS);
   // lookup operation for MethodLookupCache
   friend class MethodLookupCache;
+  virtual Klass* find_field(Symbol* name, Symbol* signature, fieldDescriptor* fd) const;
   virtual Method* uncached_lookup_method(Symbol* name, Symbol* signature) const;
  public:
   Method* lookup_method(Symbol* name, Symbol* signature) const {