From 8fba19f269f2b0fb42f4e3d1ae46b6142dd91580 Mon Sep 17 00:00:00 2001
From: Yan Zhulanow <Yan.Zhulanow@jetbrains.com>
Date: Wed, 8 Nov 2017 14:47:33 +0900
Subject: [PATCH] Kapt: Do not print empty diagnostic messages

---
 .../kotlin/kapt3/util/MessageCollectorBackedWriter.kt        | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/plugins/kapt3/kapt3-compiler/src/org/jetbrains/kotlin/kapt3/util/MessageCollectorBackedWriter.kt b/plugins/kapt3/kapt3-compiler/src/org/jetbrains/kotlin/kapt3/util/MessageCollectorBackedWriter.kt
index e053ddacc3a..21f08ab34d6 100644
--- a/plugins/kapt3/kapt3-compiler/src/org/jetbrains/kotlin/kapt3/util/MessageCollectorBackedWriter.kt
+++ b/plugins/kapt3/kapt3-compiler/src/org/jetbrains/kotlin/kapt3/util/MessageCollectorBackedWriter.kt
@@ -23,7 +23,10 @@ import java.io.Writer
 
 class MessageCollectorBackedWriter(val messageCollector: MessageCollector, val severity: CompilerMessageSeverity) : Writer() {
     override fun write(buffer: CharArray, offset: Int, length: Int) {
-        messageCollector.report(severity, String(buffer, offset, length))
+        val message = String(buffer, offset, length).trim().trim('\n', '\r')
+        if (message.isNotEmpty()) {
+            messageCollector.report(severity, message)
+        }
     }
 
     override fun flush() {