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tool/sdk_expected_errors.txt

Index: tool/sdk_expected_errors.txt
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index a6c50f7855c3b02f22dea9a557b653b62eb78dd4..4dd486907ab9b7fcbfe7c890452673f28a288690 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -274,3 +274,4 @@ warning: [DownCastComposite] min(a.y, b.y) (num) will need runtime check to cast
 warning: [DownCastComposite] max(a.y, b.y) - top (num) will need runtime check to cast to type T (dart:math/rectangle.dart, line 231, col 16)
 warning: [DownCastComposite] _clampToZero(width) (num) will need runtime check to cast to type T (dart:math/rectangle.dart, line 247, col 28)
 warning: [DownCastComposite] _clampToZero(height) (num) will need runtime check to cast to type T (dart:math/rectangle.dart, line 263, col 30)
+warning: [DownCastComposite] interfaces().map((t) => new JsClassMirror._(t)) (dynamic) will need runtime check to cast to type List<ClassMirror> (dart:_js_mirrors, line 127, col 14)

[Jennifer Messerly, 2015/12/01 16:41:39]

this should go away after suggested fix :)

[vsm, 2015/12/01 17:00:01]

Still have the JS one.  Is there a way to tell it '()->List<Type>'?

[Jennifer Messerly, 2015/12/01 17:13:49]

No. But we should have it always trust JS builtin (or to put it another way,
allow downward inference to fix the type of that expression). I think we have
this request sitting in a github issue somewhere :)