Fix for EA-53605 - UOE: PackageType.throwException

core/descriptors/src/org/jetbrains/jet/lang/types/PackageType.java

@@ -84,4 +84,9 @@ public class PackageType implements JetType {
         throwException();
         return null;
     }
+
+    @Override
+    public String toString() {
+        return "[Package-type " + name + "]";
+    }
 }

core/descriptors/src/org/jetbrains/jet/lang/types/lang/KotlinBuiltIns.java

@@ -727,7 +727,7 @@ public class KotlinBuiltIns {
     }
 
     public boolean isFunctionType(@NotNull JetType type) {
-        if (setContainsClassOf(functionClassesSet, type)) return true;
+        if (!(type instanceof PackageType) && setContainsClassOf(functionClassesSet, type)) return true;
 
         for (JetType superType : type.getConstructor().getSupertypes()) {
             if (isFunctionType(superType)) return true;
@@ -737,11 +737,12 @@ public class KotlinBuiltIns {
     }
 
     public boolean isExactFunctionOrExtensionFunctionType(@NotNull JetType type) {
-        return setContainsClassOf(extensionFunctionClassesSet, type) || setContainsClassOf(functionClassesSet, type);
+        return !(type instanceof PackageType)
+               && (setContainsClassOf(extensionFunctionClassesSet, type) || setContainsClassOf(functionClassesSet, type));
     }
 
     public boolean isExtensionFunctionType(@NotNull JetType type) {
-        if (setContainsClassOf(extensionFunctionClassesSet, type)) return true;
+        if (!(type instanceof PackageType) && setContainsClassOf(extensionFunctionClassesSet, type)) return true;
 
         for (JetType superType : type.getConstructor().getSupertypes()) {
             if (isExtensionFunctionType(superType)) return true;

core/descriptors/src/org/jetbrains/jet/renderer/DescriptorRendererImpl.java

@@ -245,6 +245,9 @@ public class DescriptorRendererImpl implements DescriptorRenderer {
             }
             return "???";
         }
+        if (type instanceof PackageType) {
+            return type.toString();
+        }
         if (type instanceof LazyType && debugMode) {
             return type.toString();
         }