From 52aa6232fb8f03461c25cb6ac5981d26882647fc Mon Sep 17 00:00:00 2001
From: Eugene Zhuravlev <jeka@intellij.com>
Date: Wed, 2 Apr 2014 16:43:38 +0400
Subject: [PATCH] IDEA-122078 Consider excluded output roots on output cleaning

---
 .../jps/incremental/IncProjectBuilder.java    | 23 +++++++++++--------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/jps/jps-builders/src/org/jetbrains/jps/incremental/IncProjectBuilder.java b/jps/jps-builders/src/org/jetbrains/jps/incremental/IncProjectBuilder.java
index d7f46af47437..7cf0a804f7c9 100644
--- a/jps/jps-builders/src/org/jetbrains/jps/incremental/IncProjectBuilder.java
+++ b/jps/jps-builders/src/org/jetbrains/jps/incremental/IncProjectBuilder.java
@@ -513,15 +513,20 @@ public class IncProjectBuilder {
       context.checkCanceled();
       boolean okToDelete = true;
       final File outputRoot = entry.getKey();
-      if (JpsPathUtil.isUnder(allSourceRoots, outputRoot)) {
-        okToDelete = false;
-      }
-      else {
-        final Set<File> _outRoot = Collections.singleton(outputRoot);
-        for (File srcRoot : allSourceRoots) {
-          if (JpsPathUtil.isUnder(_outRoot, srcRoot)) {
-            okToDelete = false;
-            break;
+      if (!moduleIndex.isExcluded(outputRoot)) {
+        // if output root itself is directly or indirectly excluded, 
+        // there cannot be any manageable sources under it, even if the output root is located under some source root
+        // so in this case it is safe to delete such root
+        if (JpsPathUtil.isUnder(allSourceRoots, outputRoot)) {
+          okToDelete = false;
+        }
+        else {
+          final Set<File> _outRoot = Collections.singleton(outputRoot);
+          for (File srcRoot : allSourceRoots) {
+            if (JpsPathUtil.isUnder(_outRoot, srcRoot)) {
+              okToDelete = false;
+              break;
+            }
           }
         }
       }