From e557a3c3f27702ddad0d71de5b83f711dcca8fd3 Mon Sep 17 00:00:00 2001
From: Sergey Rostov <sergey.rostov@jetbrains.com>
Date: Fri, 31 May 2019 10:55:31 +0300
Subject: [PATCH] Gradle, ProcessedFilesCache: delete everything on version
 change

---
 .../jetbrains/kotlin/gradle/internal/ProcessedFilesCache.kt  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/ProcessedFilesCache.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/ProcessedFilesCache.kt
index b0ba4cc6915..df82a08d833 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/ProcessedFilesCache.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/ProcessedFilesCache.kt
@@ -65,7 +65,10 @@ internal open class ProcessedFilesCache(
             stateFile.reader().use {
                 gson.fromJson(it, State::class.java)
             }.let {
-                if (it.version != version) null else it
+                if (it.version != version) {
+                    targetDir.deleteRecursively()
+                    null
+                } else it
             }
         } catch (e: JsonParseException) {
             project.logger.warn("Cannot read $stateFile", e)