From 28dd0fde3b65de1e246a1a7be7e26509d02a9a81 Mon Sep 17 00:00:00 2001
From: Shi-Hao Hong <shihaohong@google.com>
Date: Wed, 31 Jul 2019 13:42:55 -0700
Subject: [PATCH] Clamp Scaffold's max body height when extendBody is true
 (#37254)

---
 packages/flutter/lib/src/material/scaffold.dart | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/flutter/lib/src/material/scaffold.dart b/packages/flutter/lib/src/material/scaffold.dart
index ba5442103d1..e081c7c49ee 100644
--- a/packages/flutter/lib/src/material/scaffold.dart
+++ b/packages/flutter/lib/src/material/scaffold.dart
@@ -432,6 +432,7 @@ class _ScaffoldLayout extends MultiChildLayoutDelegate {
 
       if (extendBody) {
         bodyMaxHeight += bottomWidgetsHeight;
+        bodyMaxHeight = bodyMaxHeight.clamp(0.0, looseConstraints.maxHeight - contentTop).toDouble();
         assert(bodyMaxHeight <= math.max(0.0, looseConstraints.maxHeight - contentTop));
       }