Added check for value parameters number in alternative signatures loading.

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/AlternativeSignatureParsing.java

@@ -108,6 +108,13 @@ class AlternativeSignatureParsing {
             JavaDescriptorResolver.ValueParameterDescriptors valueParameterDescriptors,
             JetNamedFunction altFunDeclaration) throws AlternativeSignatureMismatchException {
         List<ValueParameterDescriptor> parameterDescriptors = valueParameterDescriptors.descriptors;
+
+        if (parameterDescriptors.size() != altFunDeclaration.getValueParameters().size()) {
+            throw new AlternativeSignatureMismatchException(
+                    String.format("Method signature has %d value parameters, but alternative signature has %d",
+                                  parameterDescriptors.size(), altFunDeclaration.getValueParameters().size()));
+        }
+
         List<ValueParameterDescriptor> altParamDescriptors = new ArrayList<ValueParameterDescriptor>();
         for (int i = 0, size = parameterDescriptors.size(); i < size; i++) {
             ValueParameterDescriptor pd = parameterDescriptors.get(i);

compiler/testData/readJavaBinaryClass/kotlinSignature/error/WrongValueParametersCount.java

@@ -0,0 +1,10 @@
+package test;
+
+import jet.runtime.typeinfo.KotlinSignature;
+
+public class WrongValueParametersCount {
+    @KotlinSignature("fun foo(a : Int) : Int")
+    public Integer foo() {
+        throw new UnsupportedOperationException();
+    }
+}

compiler/testData/readJavaBinaryClass/kotlinSignature/error/WrongValueParametersCount.kt

@@ -0,0 +1,9 @@
+package test
+
+import java.util.*
+
+public open class WrongValueParametersCount : Object() {
+    public open fun foo() : Int? {
+        throw UnsupportedOperationException()
+    }
+}

compiler/testData/readJavaBinaryClass/kotlinSignature/error/WrongValueParametersCount.txt

@@ -0,0 +1,6 @@
+namespace test
+
+public open class test.WrongValueParametersCount : java.lang.Object {
+    public final /*constructor*/ fun <init>(): test.WrongValueParametersCount
+    public open fun foo(): jet.Int?
+}