#ref
diff --git a/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/SuspiciousArrayCastInspection.java b/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/SuspiciousArrayCastInspection.java
new file mode 100644
index 000000000000..0a56e13387af
--- /dev/null
+++ b/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/SuspiciousArrayCastInspection.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2000-2012 JetBrains s.r.o.
+ *
+ * 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.
+ */
+package com.siyeh.ig.bugs;
+
+import com.intellij.psi.*;
+import com.siyeh.InspectionGadgetsBundle;
+import com.siyeh.ig.BaseInspection;
+import com.siyeh.ig.BaseInspectionVisitor;
+import org.jetbrains.annotations.Nls;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Bas Leijdekkers
+ */
+public class SuspiciousArrayCastInspection extends BaseInspection {
+
+ @Nls
+ @NotNull
+ @Override
+ public String getDisplayName() {
+ return InspectionGadgetsBundle.message("suspicious.array.cast.display.name");
+ }
+
+ @NotNull
+ @Override
+ protected String buildErrorString(Object... infos) {
+ return InspectionGadgetsBundle.message("suspicious.array.cast.problem.descriptor");
+ }
+
+ @Override
+ public BaseInspectionVisitor buildVisitor() {
+ return new SuspiciousArrayCastVisitor();
+ }
+
+ private static class SuspiciousArrayCastVisitor extends BaseInspectionVisitor {
+
+ @Override
+ public void visitTypeCastExpression(PsiTypeCastExpression expression) {
+ super.visitTypeCastExpression(expression);
+ final PsiTypeElement typeElement = expression.getCastType();
+ if (typeElement == null) {
+ return;
+ }
+ final PsiType castType = typeElement.getType();
+ if (!(castType instanceof PsiArrayType)) {
+ return;
+ }
+ final PsiExpression operand = expression.getOperand();
+ if (operand == null) {
+ return;
+ }
+ final PsiType type = operand.getType();
+ if (!(type instanceof PsiArrayType)) {
+ return;
+ }
+ final PsiType castComponentType = castType.getDeepComponentType();
+ if (!(castComponentType instanceof PsiClassType)) {
+ return;
+ }
+ final PsiClassType castClassType = (PsiClassType)castComponentType;
+ final PsiClass castClass = castClassType.resolve();
+ if (castClass == null) {
+ return;
+ }
+ final PsiType componentType = type.getDeepComponentType();
+ if (!(componentType instanceof PsiClassType)) {
+ return;
+ }
+ final PsiClassType classType = (PsiClassType)componentType;
+ final PsiClass aClass = classType.resolve();
+ if (aClass == null) {
+ return;
+ }
+ if (!castClass.isInheritor(aClass, true)) {
+ return;
+ }
+ registerError(typeElement);
+ }
+ }
+}
diff --git a/plugins/InspectionGadgets/src/inspectionDescriptions/SuspiciousArrayCast.html b/plugins/InspectionGadgets/src/inspectionDescriptions/SuspiciousArrayCast.html
new file mode 100644
index 000000000000..79386eb05bf8
--- /dev/null
+++ b/plugins/InspectionGadgets/src/inspectionDescriptions/SuspiciousArrayCast.html
@@ -0,0 +1,9 @@
+
+
+This inspection reports suspicious array casts. An array cast is suspicious when it casts to a more specific array type. Such
+a cast is legal at compile time but may fail with a ClassCastException at runtime.
+
+
+New in 12, Powered by InspectionGadgets
+
+
\ No newline at end of file
diff --git a/plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/suspicious_array_cast/SuspiciousArrayCast.java b/plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/suspicious_array_cast/SuspiciousArrayCast.java
new file mode 100644
index 000000000000..6eb91bd28a3d
--- /dev/null
+++ b/plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/suspicious_array_cast/SuspiciousArrayCast.java
@@ -0,0 +1,11 @@
+package com.siyeh.igtest.bugs.suspicious_array_cast;
+
+class SuspiciousArrayCast {
+
+ private Long[] longs = (Long[])getNumbers();
+ private Number[] numbers = (Number[])getNumbers();
+
+ private Number[] getNumbers() {
+ return new Number[]{1L, 2L, 4L};
+ }
+}
\ No newline at end of file
diff --git a/plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/suspicious_array_cast/expected.xml b/plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/suspicious_array_cast/expected.xml
new file mode 100644
index 000000000000..3cada1d87fe5
--- /dev/null
+++ b/plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/suspicious_array_cast/expected.xml
@@ -0,0 +1,9 @@
+
+
+
+ SuspiciousArrayCast.java
+ 5
+ Suspicious array cast
+ Suspicious cast to <code>Long[]</code>
+
+
\ No newline at end of file
diff --git a/plugins/InspectionGadgets/testsrc/com/siyeh/ig/bugs/SuspiciousArrayCastInspectionTest.java b/plugins/InspectionGadgets/testsrc/com/siyeh/ig/bugs/SuspiciousArrayCastInspectionTest.java
new file mode 100644
index 000000000000..6038046d3fb5
--- /dev/null
+++ b/plugins/InspectionGadgets/testsrc/com/siyeh/ig/bugs/SuspiciousArrayCastInspectionTest.java
@@ -0,0 +1,10 @@
+package com.siyeh.ig.bugs;
+
+import com.siyeh.ig.IGInspectionTestCase;
+
+public class SuspiciousArrayCastInspectionTest extends IGInspectionTestCase {
+
+ public void test() throws Exception {
+ doTest("com/siyeh/igtest/bugs/suspicious_array_cast", new SuspiciousArrayCastInspection());
+ }
+}
\ No newline at end of file