Hack for checking access to internal declarations during incremental compilation

compiler/cli/src/org/jetbrains/kotlin/cli/common/moduleVisibilityImpl.kt

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.load.kotlin.ModuleVisibilityManager
 import org.jetbrains.kotlin.load.kotlin.getSourceElement
 import org.jetbrains.kotlin.load.kotlin.isContainedByCompiledPartOfOurModule
+import org.jetbrains.kotlin.load.kotlin.isFromIncrementalPackageFragment
 import org.jetbrains.kotlin.modules.Module
 import org.jetbrains.kotlin.resolve.lazy.descriptors.LazyPackageDescriptor
 import org.jetbrains.kotlin.resolve.source.KotlinSourceElement
@@ -59,6 +60,10 @@ class ModuleVisibilityHelperImpl : ModuleVisibilityHelper {
 
         if (modules.isEmpty()) return false
 
+        // Hack for incremental compilation (now there is no way to determine the module of descriptor in case of incremental package fragment)
+        // TODO Implement full check for access to internal for incremental compilation
+        if (what.isFromIncrementalPackageFragment) return true
+
         return findModule(from, modules) === findModule(what, modules)
     }
 

compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/moduleVisibilityUtils.kt

@@ -41,6 +41,10 @@ interface ModuleVisibilityManager {
     }
 }
 
+public val DeclarationDescriptor.isFromIncrementalPackageFragment: Boolean
+    get() =
+        DescriptorUtils.getParentOfType(this, PackageFragmentDescriptor::class.java, false) is IncrementalPackageFragmentProvider.IncrementalPackageFragment
+
 public fun isContainedByCompiledPartOfOurModule(descriptor: DeclarationDescriptor, outDirectory: File?): Boolean {
     val packageFragment = DescriptorUtils.getParentOfType(descriptor, PackageFragmentDescriptor::class.java, false)