Immediate extension members are correctly detected for platform types

idea/src/org/jetbrains/jet/plugin/completion/LookupElementFactory.kt

@@ -37,6 +37,7 @@ import com.intellij.codeInsight.lookup.LookupElementPresentation
 import org.jetbrains.jet.lang.types.JetType
 import org.jetbrains.jet.plugin.caches.resolve.ResolutionFacade
 import java.awt.Color
+import org.jetbrains.jet.lang.types.TypeUtils
 
 public open class LookupElementFactory protected() {
     public open fun createLookupElement(resolutionFacade: ResolutionFacade, descriptor: DeclarationDescriptor): LookupElement {
@@ -171,7 +172,7 @@ public class BoldImmediateLookupElementFactory(private val receiverTypes: Collec
             val receiverParamType = receiverParameter.getType()
             if (isReceiverNullable && !receiverParamType.isNullable())
                 Style.GRAYED
-            else if (receiverTypes.any { it == receiverParamType })
+            else if (receiverTypes.any { TypeUtils.equalTypes(it, receiverParamType) })
                 Style.BOLD
             else
                 Style.NORMAL

idea/testData/completion/basic/java/ImmediateMembersForPlatformType.kt

@@ -0,0 +1,14 @@
+fun String.extFunForString(){}
+fun Any.extFunForAny(){}
+fun String?.extFunForStringNullable(){}
+
+class C {
+    fun foo() {
+        System.getProperty("a").<caret>
+    }
+}
+
+// EXIST: { itemText: "extFunForString", attributes: "bold" }
+// EXIST: { itemText: "extFunForAny", attributes: "" }
+// EXIST: { itemText: "extFunForStringNullable", attributes: "bold" }
+// EXIST: { itemText: "charAt", attributes: "bold" }

idea/tests/org/jetbrains/jet/completion/JvmBasicCompletionTestGenerated.java

@@ -1033,6 +1033,12 @@ public class JvmBasicCompletionTestGenerated extends AbstractJvmBasicCompletionT
             doTest(fileName);
         }
 
+        @TestMetadata("ImmediateMembersForPlatformType.kt")
+        public void testImmediateMembersForPlatformType() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/java/ImmediateMembersForPlatformType.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("InPackage.kt")
         public void testInPackage() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/java/InPackage.kt");