Temporarily suppress fasta compiler hints/warnings/errors during compiling platform.dill file for t…

tools/patch_sdk.dart

 #!/usr/bin/env dart
 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Command line tool to merge the SDK libraries and our patch files.
 /// This is currently designed as an offline tool, but we could automate it.
 
 import 'dart:io';
+import 'dart:async';
 import 'dart:math' as math;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:path/path.dart' as path;
 import 'package:front_end/src/fasta/bin/compile_platform.dart' as
     compile_platform;
 
 Future main(List<String> argv) async {
   var base = path.fromUri(Platform.script);
@@ skipping 167 matching lines @@
       _writeSync(builtinLibraryOut, new File(builtinLibraryIn).readAsStringSync());
     }
 
     for (var file in ['loader.dart', 'server.dart', 'vmservice_io.dart']) {
       var libraryIn  = path.join(dartDir, 'runtime', 'bin', 'vmservice', file);
       var libraryOut = path.join(sdkOut, 'vmservice_io', file);
       _writeSync(libraryOut, new File(libraryIn).readAsStringSync());
     }
   }
 
-  await compile_platform.main(<String>[
-    '--packages',
-    new Uri.file(packagesFile).toString(),
-    sdkOut,
-    path.join(sdkOut, 'platform.dill')
-  ]);
+  // TODO(kustermann): We suppress compiler hints/warnings/errors temporarily
+  // because everyone building the `runtime` target will get these now.
+  // We should remove the suppression again once the underlying issues have
+  // been fixed (either in fasta or the dart files in the patched_sdk).
+  final capturedLines = <String>[];
+  try {
+    await runZoned(() async {
+      await compile_platform.main(<String>[
+        '--packages',
+        new Uri.file(packagesFile).toString(),
+        sdkOut,
+        path.join(sdkOut, 'platform.dill')
+      ]);
+    }, zoneSpecification: new ZoneSpecification(print: (_, _2, _3, line) {
+      capturedLines.add(line);
+    }));
+  } catch (_) {
+    for (final line in capturedLines) {
+      print(line);
+    }
+    rethrow;
+  }
 }
 
 /// Writes a file, creating the directory if needed.
 void _writeSync(String filePath, String contents) {
   var outDir = new Directory(path.dirname(filePath));
   if (!outDir.existsSync()) outDir.createSync(recursive: true);
 
   new File(filePath).writeAsStringSync(contents);
 }
 
@@ skipping 323 matching lines @@
     if (diff != 0) return diff;
     return end - other.end;
   }
 }
 
 List<SdkLibrary> _getSdkLibraries(String contents) {
   var libraryBuilder = new SdkLibrariesReader_LibraryBuilder(true);
   parseCompilationUnit(contents).accept(libraryBuilder);
   return libraryBuilder.librariesMap.sdkLibraries;
 }