From e05ddcbd9eec6abb9798e0e4ae84f63dc59e9fb8 Mon Sep 17 00:00:00 2001
From: Remi Rousselet <darky12s@gmail.com>
Date: Wed, 8 Dec 2021 00:24:04 +0100
Subject: [PATCH] Requiring data preserves the stackTrace (#93592)

---
 packages/flutter/lib/src/widgets/async.dart   |  2 +-
 packages/flutter/test/widgets/async_test.dart | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/packages/flutter/lib/src/widgets/async.dart b/packages/flutter/lib/src/widgets/async.dart
index 5f8ebc46e5..fd2fb79140 100644
--- a/packages/flutter/lib/src/widgets/async.dart
+++ b/packages/flutter/lib/src/widgets/async.dart
@@ -249,7 +249,7 @@ class AsyncSnapshot<T> {
     if (hasData)
       return data!;
     if (hasError)
-      throw error!; // ignore: only_throw_errors, since we're just propagating an existing error
+      Error.throwWithStackTrace(error!, stackTrace!);
     throw StateError('Snapshot has neither data nor error');
   }
 
diff --git a/packages/flutter/test/widgets/async_test.dart b/packages/flutter/test/widgets/async_test.dart
index 367a268f5f..d9de5524d6 100644
--- a/packages/flutter/test/widgets/async_test.dart
+++ b/packages/flutter/test/widgets/async_test.dart
@@ -12,6 +12,20 @@ void main() {
     return Text(snapshot.toString(), textDirection: TextDirection.ltr);
   }
   group('AsyncSnapshot', () {
+    test('requiring data preserves the stackTrace', () {
+      final StackTrace originalStackTrace = StackTrace.current;
+
+      try {
+        AsyncSnapshot<String>.withError(
+          ConnectionState.done,
+          Error(),
+          originalStackTrace,
+        ).requireData;
+        fail('requireData did not throw');
+      } catch (error, stackTrace) {
+        expect(stackTrace, originalStackTrace);
+      }
+    });
     test('requiring data succeeds if data is present', () {
       expect(
         const AsyncSnapshot<String>.withData(ConnectionState.done, 'hello').requireData,