Unresolved super-send is not a compile-time error.

dart/frog/leg/compiler.dart

Index: dart/frog/leg/compiler.dart
diff --git a/dart/frog/leg/compiler.dart b/dart/frog/leg/compiler.dart
index 0322d64718e248aa095974fc1818e3b38edc9616..cae23c4d7602063ad95f233c6481f6281f273c16 100644
--- a/dart/frog/leg/compiler.dart
+++ b/dart/frog/leg/compiler.dart
@@ -376,7 +376,7 @@ class Compiler implements DiagnosticListener {
     final startOffset = begin.charOffset;
     // TODO(ahe): Compute proper end offset.
     final endOffset =
-      (end.next !== null) ? end.next.charOffset : startOffset + 1;
+      Math.max((end.next !== null) ? end.next.charOffset : 0, startOffset + 1);

[kasperl, 2012/03/13 08:55:30]

It's a bit hard to read and understand this line now.
   

[ahe, 2012/03/13 09:12:11]

Done.

     Uri uri = currentElement.getCompilationUnit().script.uri;
     return new SourceSpan(uri, startOffset, endOffset);
   }