Correctly avoid calculation of autogenerated parameter name in ClsParameterImpl.calcName()

compiler/frontend.java/src/org/jetbrains/kotlin/load/java/structure/impl/JavaValueParameterImpl.java

@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.load.java.structure.impl;
 import com.intellij.psi.PsiAnnotationOwner;
 import com.intellij.psi.PsiParameter;
 import com.intellij.psi.impl.compiled.ClsParameterImpl;
+import com.intellij.psi.impl.java.stubs.impl.PsiParameterStubImpl;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.descriptors.Visibilities;
@@ -85,7 +86,7 @@ public class JavaValueParameterImpl extends JavaElementImpl<PsiParameter>
     @Nullable
     public Name getName() {
         PsiParameter psi = getPsi();
-        if (psi instanceof ClsParameterImpl && ((ClsParameterImpl) psi).isAutoGeneratedName()) {
+        if (isParameterWithAutoGeneratedName(psi)) {
             return null;
         }
 
@@ -93,6 +94,11 @@ public class JavaValueParameterImpl extends JavaElementImpl<PsiParameter>
         return name == null ? null : Name.identifier(name);
     }
 
+    private static boolean isParameterWithAutoGeneratedName(PsiParameter psi) {
+        // see com.intellij.psi.impl.compiled.ClsParameterImpl.calcName()
+        return psi instanceof ClsParameterImpl && ((PsiParameterStubImpl) ((ClsParameterImpl) psi).getStub()).isAutoGeneratedName();
+    }
+
     @Override
     @NotNull
     public JavaType getType() {