stderr can be null or empty string (#15701)

2018-03-19 10:53:04 -07:00
parent d6bac5fd4a
commit 91dcfc5dd2
1 changed files with 1 additions and 1 deletions
--- a/packages/flutter_tools/lib/src/ios/mac.dart
+++ b/packages/flutter_tools/lib/src/ios/mac.dart
@@ -158,7 +158,7 @@ class Xcode {
        // This command will error if additional components need to be installed in
        // xcode 9.2 and above.
        final ProcessResult result = processManager.runSync(<String>['/usr/bin/xcrun', 'simctl', 'list']);
-        _isSimctlInstalled = result.stderr == null;
+        _isSimctlInstalled = result.stderr == null || result.stderr == '';
      } on ProcessException {
        _isSimctlInstalled = false;
      }