From 0c703faffe19ec186ce70162801258eb1cac678a Mon Sep 17 00:00:00 2001
From: Markus Tacker <Markus.Tacker@NordicSemi.no>
Date: Thu, 16 May 2019 15:43:09 +0200
Subject: [PATCH] fix(aws-lambda): proper handling of custom runtimes

Compare layer and function runtime by name.
---
 packages/@aws-cdk/aws-lambda/lib/function.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/@aws-cdk/aws-lambda/lib/function.ts b/packages/@aws-cdk/aws-lambda/lib/function.ts
index 5f9b69c3938e2..76d333b4d125a 100644
--- a/packages/@aws-cdk/aws-lambda/lib/function.ts
+++ b/packages/@aws-cdk/aws-lambda/lib/function.ts
@@ -496,7 +496,7 @@ export class Function extends FunctionBase {
     if (this.layers.length === 5) {
       throw new Error('Unable to add layer: this lambda function already uses 5 layers.');
     }
-    if (layer.compatibleRuntimes && layer.compatibleRuntimes.indexOf(this.runtime) === -1) {
+    if (layer.compatibleRuntimes && layer.compatibleRuntimes.map(runtime => runtime.name).indexOf(this.runtime.name) === -1) {
       const runtimes = layer.compatibleRuntimes.map(runtime => runtime.name).join(', ');
       throw new Error(`This lambda function uses a runtime that is incompatible with this layer (${this.runtime.name} is not in [${runtimes}])`);
     }