From 89f0b117656e927dd77dacb1de07a2f27e797edb Mon Sep 17 00:00:00 2001
From: Alexey Tsvetkov <alexey.tsvetkov@jetbrains.com>
Date: Fri, 22 Jun 2018 04:15:52 +0300
Subject: [PATCH] Avoid exception when inspectClassesForKotlinIC produces empty
 file

Empty file should not happen, but we should process it correctly anyway.
---
 .../kotlin/incremental/multiproject/ModulesApiHistory.kt        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/multiproject/ModulesApiHistory.kt b/compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/multiproject/ModulesApiHistory.kt
index 67dd309fc76..ef7ca8a0326 100644
--- a/compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/multiproject/ModulesApiHistory.kt
+++ b/compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/multiproject/ModulesApiHistory.kt
@@ -96,7 +96,7 @@ open class ModulesApiHistoryJvm(protected val modulesInfo: IncrementalModuleInfo
             return Either.Error("Could not read class list for $jar from $classListFile: $t")
         }
 
-        val classFileDirs = classFiles.groupBy { it.parentFile }
+        val classFileDirs = classFiles.filter { it.exists() && it.parentFile != null }.groupBy { it.parentFile }
         val result = HashSet<File>()
         for ((dir, files) in classFileDirs) {
             val historyEither = getBuildHistoryForDir(dir)