From a4f34f4a51f7c8d05e4249bad4007e386b29d63f Mon Sep 17 00:00:00 2001
From: danrubel <danrubel@google.com>
Date: Thu, 4 Jul 2019 08:32:05 +0000
Subject: [PATCH] expired experimental flag command line message

Change-Id: I02a977f36969aec7fa67593739330fd785fcf02c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/107661
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Auto-Submit: Dan Rubel <danrubel@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
---
 pkg/front_end/lib/src/api_prototype/compiler_options.dart | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkg/front_end/lib/src/api_prototype/compiler_options.dart b/pkg/front_end/lib/src/api_prototype/compiler_options.dart
index 8a4d5f62c7d..14a2a0cbfc3 100644
--- a/pkg/front_end/lib/src/api_prototype/compiler_options.dart
+++ b/pkg/front_end/lib/src/api_prototype/compiler_options.dart
@@ -233,6 +233,8 @@ Map<ExperimentalFlag, bool> parseExperimentalFlags(
       ExperimentalFlag flag = parseExperimentalFlag(experiment);
       if (flag == null) {
         onError("Unknown experiment: " + experiment);
+      } else if (flag == ExperimentalFlag.expiredFlag) {
+        print("Experiment flag no longer required: " + experiment);
       } else if (flags.containsKey(flag)) {
         if (flags[flag] != value) {
           onError(