Fixed Buttons with icon RenderFlex overflow (#78018)

packages/flutter/lib/src/material/elevated_button.dart

@@ -468,7 +468,7 @@ class _ElevatedButtonWithIconChild extends StatelessWidget {
     final double gap = scale <= 1 ? 8 : lerpDouble(8, 4, math.min(scale - 1, 1))!;
     return Row(
       mainAxisSize: MainAxisSize.min,
-      children: <Widget>[icon, SizedBox(width: gap), label],
+      children: <Widget>[icon, SizedBox(width: gap), Flexible(child: label)],
     );
   }
 }

packages/flutter/lib/src/material/flat_button.dart

@@ -229,7 +229,7 @@ class _FlatButtonWithIcon extends FlatButton with MaterialButtonWithIconMixin {
            children: <Widget>[
              icon,
              const SizedBox(width: 8.0),
-             label,
+             Flexible(child: label),
            ],
          ),
          minWidth: minWidth,

packages/flutter/lib/src/material/outline_button.dart

@@ -274,7 +274,7 @@ class _OutlineButtonWithIcon extends OutlineButton with MaterialButtonWithIconMi
            children: <Widget>[
              icon,
              const SizedBox(width: 8.0),
-             label,
+             Flexible(child:label),
            ],
          ),
        );

packages/flutter/lib/src/material/outlined_button.dart

@@ -374,7 +374,7 @@ class _OutlinedButtonWithIconChild extends StatelessWidget {
     final double gap = scale <= 1 ? 8 : lerpDouble(8, 4, math.min(scale - 1, 1))!;
     return Row(
       mainAxisSize: MainAxisSize.min,
-      children: <Widget>[icon, SizedBox(width: gap), label],
+      children: <Widget>[icon, SizedBox(width: gap), Flexible(child:label)],
     );
   }
 }

packages/flutter/lib/src/material/raised_button.dart

@@ -265,7 +265,7 @@ class _RaisedButtonWithIcon extends RaisedButton with MaterialButtonWithIconMixi
            children: <Widget>[
              icon,
              const SizedBox(width: 8.0),
-             label,
+             Flexible(child: label),
            ],
          ),
        );

packages/flutter/lib/src/material/text_button.dart

@@ -465,7 +465,7 @@ class _TextButtonWithIconChild extends StatelessWidget {
     final double gap = scale <= 1 ? 8 : lerpDouble(8, 4, math.min(scale - 1, 1))!;
     return Row(
       mainAxisSize: MainAxisSize.min,
-      children: <Widget>[icon, SizedBox(width: gap), label],
+      children: <Widget>[icon, SizedBox(width: gap), Flexible(child:label)],
     );
   }
 }

packages/flutter/test/material/elevated_button_test.dart

@@ -1112,6 +1112,26 @@ void main() {
       await tester.pumpAndSettle();
     }
   });
+
+  testWidgets('Fixed ElevatedButton.icon RenderFlex overflow', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: SizedBox(
+            width: 200,
+            child: ElevatedButton.icon(
+              onPressed: () {},
+              icon: const Icon(Icons.add),
+              label: const Text(
+                'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut a euismod nibh. Morbi laoreet purus.',
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(tester.takeException(), null);
+  });
 }
 
 TextStyle _iconStyle(WidgetTester tester, IconData icon) {

packages/flutter/test/material/flat_button_test.dart

@@ -882,6 +882,26 @@ void main() {
       await buildWidget(buttonMinWidth: buttonMinWidth);
       expect(tester.widget<RawMaterialButton>(rawMaterialButtonFinder).constraints.minWidth, buttonMinWidth);
     });
+
+    testWidgets('Fixed FlatButton.icon RenderFlex overflow', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          home: Scaffold(
+            body: SizedBox(
+              width: 200,
+              child: FlatButton.icon(
+                onPressed: () {},
+                icon: const Icon(Icons.add),
+                label: const Text(
+                  'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut a euismod nibh. Morbi laoreet purus.',
+                ),
+              ),
+            ),
+          ),
+        ),
+      );
+      expect(tester.takeException(), null);
+  });
 }
 
 TextStyle? _iconStyle(WidgetTester tester, IconData icon) {

packages/flutter/test/material/outline_button_test.dart

@@ -1222,6 +1222,26 @@ void main() {
     expect(box.size, equals(const Size(76, 36)));
     expect(childRect, equals(const Rect.fromLTRB(372.0, 293.0, 428.0, 307.0)));
   });
+
+  testWidgets('Fixed OutlineButton.icon RenderFlex overflow', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: SizedBox(
+            width: 200,
+            child: OutlineButton.icon(
+              onPressed: () {},
+              icon: const Icon(Icons.add),
+              label: const Text(
+                'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut a euismod nibh. Morbi laoreet purus.',
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(tester.takeException(), null);
+  });
 }
 
 PhysicalModelLayer _findPhysicalLayer(Element element) {

packages/flutter/test/material/outlined_button_test.dart

@@ -1288,6 +1288,26 @@ void main() {
       await tester.pumpAndSettle();
     }
   });
+
+  testWidgets('Fixed OutlinedButton.icon RenderFlex overflow', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: SizedBox(
+            width: 200,
+            child: OutlinedButton.icon(
+              onPressed: () {},
+              icon: const Icon(Icons.add),
+              label: const Text(
+                'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut a euismod nibh. Morbi laoreet purus.',
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(tester.takeException(), null);
+  });
 }
 
 PhysicalModelLayer _findPhysicalLayer(Element element) {

packages/flutter/test/material/raised_button_test.dart

@@ -727,6 +727,26 @@ void main() {
     expect(paddingRect.top, tallerWidget.top - 5);
     expect(paddingRect.bottom, tallerWidget.bottom + 12);
   });
+
+  testWidgets('Fixed RaisedButton.icon RenderFlex overflow', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: SizedBox(
+            width: 200,
+            child: RaisedButton.icon(
+              onPressed: () {},
+              icon: const Icon(Icons.add),
+              label: const Text(
+                'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut a euismod nibh. Morbi laoreet purus.',
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(tester.takeException(), null);
+  });
 }
 
 TextStyle _iconStyle(WidgetTester tester, IconData icon) {

packages/flutter/test/material/text_button_test.dart

@@ -1084,6 +1084,26 @@ void main() {
       await tester.pumpAndSettle();
     }
   });
+
+  testWidgets('Fixed TextButton.icon RenderFlex overflow', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: SizedBox(
+            width: 200,
+            child: TextButton.icon(
+              onPressed: () {},
+              icon: const Icon(Icons.add),
+              label: const Text(
+                'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut a euismod nibh. Morbi laoreet purus.',
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(tester.takeException(), null);
+  });
 }
 
 TextStyle? _iconStyle(WidgetTester tester, IconData icon) {