Revert "Revert "Use IsAssignableFrom instead of IsSubclass for robustness.""
Don't use IsAssignableFrom, but check beforehand if the referrer is an
interface. Otherwise, we are being too aggressive on removing clinit
checks on interfaces (being a subclass doesn't imply the interface
has been initialized).
bug:21870666
This reverts commit 463580ca5a1e75e27ad0207537ffc6252091326a.
Change-Id: I2a13974d28477ee3e5224142cc260cbf46d19aa9
diff --git a/compiler/driver/compiler_driver-inl.h b/compiler/driver/compiler_driver-inl.h
index e0c56fc..633bc1b 100644
--- a/compiler/driver/compiler_driver-inl.h
+++ b/compiler/driver/compiler_driver-inl.h
@@ -250,8 +250,10 @@
inline bool CompilerDriver::CanReferrerAssumeClassIsInitialized(mirror::Class* referrer_class,
mirror::Class* klass) {
- return (referrer_class != nullptr && referrer_class->IsSubClass(klass)) ||
- CanAssumeClassIsInitialized(klass);
+ return (referrer_class != nullptr
+ && !referrer_class->IsInterface()
+ && referrer_class->IsSubClass(klass))
+ || CanAssumeClassIsInitialized(klass);
}
inline bool CompilerDriver::IsStaticFieldsClassInitialized(mirror::Class* referrer_class,
diff --git a/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc
index 0736693..c497526 100644
--- a/compiler/optimizing/builder.cc
+++ b/compiler/optimizing/builder.cc
@@ -697,7 +697,8 @@
&storage_index);
}
- if (outer_class.Get()->IsSubClass(resolved_method->GetDeclaringClass())) {
+ if (!outer_class->IsInterface()
+ && outer_class->IsSubClass(resolved_method->GetDeclaringClass())) {
// If the outer class is the declaring class or a subclass
// of the declaring class, no class initialization is needed
// before the static method call.
diff --git a/test/511-clinit-interface/expected.txt b/test/511-clinit-interface/expected.txt
new file mode 100644
index 0000000..ccaf6f8
--- /dev/null
+++ b/test/511-clinit-interface/expected.txt
@@ -0,0 +1 @@
+Enter
diff --git a/test/511-clinit-interface/info.txt b/test/511-clinit-interface/info.txt
new file mode 100644
index 0000000..1351b29
--- /dev/null
+++ b/test/511-clinit-interface/info.txt
@@ -0,0 +1,2 @@
+Test that compilers don't crash when having to compile
+an interface method.
diff --git a/test/511-clinit-interface/smali/BogusInterface.smali b/test/511-clinit-interface/smali/BogusInterface.smali
new file mode 100644
index 0000000..619df24
--- /dev/null
+++ b/test/511-clinit-interface/smali/BogusInterface.smali
@@ -0,0 +1,23 @@
+# Copyright (C) 2015 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+.class public abstract interface LBogusInterface;
+
+.super Ljava/lang/Object;
+
+.method public static <clinit>()V
+ .registers 2
+ invoke-static {}, LMain;->method()V
+ return-void
+.end method
diff --git a/test/511-clinit-interface/src/Main.java b/test/511-clinit-interface/src/Main.java
new file mode 100644
index 0000000..c4d0c66
--- /dev/null
+++ b/test/511-clinit-interface/src/Main.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.lang.reflect.Method;
+
+public class Main {
+ public static void main(String[] args) throws Exception {
+ // Workaround for b/18051191.
+ System.out.println("Enter");
+ Class<?> c = Class.forName("BogusInterface");
+ }
+
+ public static void method() {
+ }
+}