From ad5ba2e4142fc53e0aec45ac47e0af2ce3e2f79e Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <wilkinsona@vmware.com>
Date: Tue, 13 Apr 2021 20:35:47 +0100
Subject: [PATCH] Compile Kotlin code will all warnings treated as errors

Closes gh-26083
---
 .../org/springframework/boot/build/KotlinConventions.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java b/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java
index 6f6c8e35c13..c832a8039ef 100644
--- a/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java
+++ b/buildSrc/src/main/java/org/springframework/boot/build/KotlinConventions.java
@@ -25,8 +25,11 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile;
  * plugin. When the plugin is applied:
  *
  * <ul>
- * <li>{@link KotlinCompile} tasks are configured to use {@code apiVersion} and
- * {@code languageVersion} 1.3.
+ * <li>{@link KotlinCompile} tasks are configured to:
+ * <ul>
+ * <li>Use {@code apiVersion} and {@code languageVersion} 1.3.
+ * <li>Treat all warnings as errors
+ * </ul>
  * </ul>
  *
  * <p/>
@@ -41,6 +44,7 @@ class KotlinConventions {
 				KotlinJvmOptions kotlinOptions = compile.getKotlinOptions();
 				kotlinOptions.setApiVersion("1.3");
 				kotlinOptions.setLanguageVersion("1.3");
+				kotlinOptions.setAllWarningsAsErrors(true);
 			});
 		});
 	}