Cocoapods ffi error can be in stdout or stderr (#121470)

Cocoapods ffi error can be in stdout or stderr

packages/flutter_tools/lib/src/macos/cocoapods.dart

@@ -361,7 +361,7 @@ class CocoaPods {
         '  pod repo update\n',
         emphasis: true,
       );
-    } else if ((stderr.contains('ffi_c.bundle') || stderr.contains('/ffi/')) &&
+    } else if ((_isFfiX86Error(stdout) || _isFfiX86Error(stderr)) &&
         _operatingSystemUtils.hostPlatform == HostPlatform.darwin_arm64) {
       // https://github.com/flutter/flutter/issues/70796
       UsageEvent(
@@ -377,6 +377,10 @@ class CocoaPods {
     }
   }
 
+  bool _isFfiX86Error(String error) {
+    return error.contains('ffi_c.bundle') || error.contains('/ffi/');
+  }
+
   void _warnIfPodfileOutOfDate(XcodeBasedProject xcodeProject) {
     final bool isIos = xcodeProject is IosProject;
     if (isIos) {

packages/flutter_tools/test/general.shard/macos/cocoapods_test.dart

@@ -19,6 +19,11 @@ import '../../src/common.dart';
 import '../../src/context.dart';
 import '../../src/fake_process_manager.dart';
 
+enum _StdioStream {
+  stdout,
+  stderr,
+}
+
 void main() {
   late FileSystem fileSystem;
   late FakeProcessManager fakeProcessManager;
@@ -492,7 +497,9 @@ Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by
       'bus error': '/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/lib/ffi/library.rb:275: [BUG] Bus Error at 0x000000010072c000',
     };
     possibleErrors.forEach((String errorName, String cocoaPodsError) {
-      testUsingContext('ffi $errorName failure on ARM macOS prompts gem install', () async {
+      void testToolExitsWithCocoapodsMessage(_StdioStream outputStream) {
+        final String streamName = outputStream == _StdioStream.stdout ? 'stdout' : 'stderr';
+        testUsingContext('ffi $errorName failure to $streamName on ARM macOS prompts gem install', () async {
           final FlutterProject projectUnderTest = setupProjectUnderTest();
           pretendPodIsInstalled();
           pretendPodVersionIs('100.0.0');
@@ -509,7 +516,8 @@ Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by
                 'LANG': 'en_US.UTF-8',
               },
               exitCode: 1,
-            stderr: cocoaPodsError,
+              stdout: outputStream == _StdioStream.stdout ? cocoaPodsError : '',
+              stderr: outputStream == _StdioStream.stderr ? cocoaPodsError : '',
             ),
             const FakeCommand(
               command: <String>['which', 'sysctl'],
@@ -537,6 +545,9 @@ Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by
           );
           expect(usage.events, contains(const TestUsageEvent('pod-install-failure', 'arm-ffi')));
         });
+      }
+      testToolExitsWithCocoapodsMessage(_StdioStream.stdout);
+      testToolExitsWithCocoapodsMessage(_StdioStream.stderr);
     });
 
     testUsingContext('ffi failure on x86 macOS does not prompt gem install', () async {