Issue 7128. Don't show problems in dart:core

compiler/java/com/google/dart/compiler/DartCompilerMainContext.java

Index: compiler/java/com/google/dart/compiler/DartCompilerMainContext.java
diff --git a/compiler/java/com/google/dart/compiler/DartCompilerMainContext.java b/compiler/java/com/google/dart/compiler/DartCompilerMainContext.java
index 4643e1cbb4496ba58f66197f0d93682eb29cc4c8..d45c00debc20c97e9989d79cf3096e087d45f973 100644
--- a/compiler/java/com/google/dart/compiler/DartCompilerMainContext.java
+++ b/compiler/java/com/google/dart/compiler/DartCompilerMainContext.java
@@ -11,6 +11,7 @@ import com.google.dart.compiler.ast.DartUnit;
 import com.google.dart.compiler.ast.LibraryUnit;
 import com.google.dart.compiler.metrics.CompilerMetrics;
 import com.google.dart.compiler.parser.DartParser;
+import com.google.dart.compiler.resolver.Elements;
 
 import java.io.IOException;
 import java.io.Reader;
@@ -55,6 +56,12 @@ final class DartCompilerMainContext implements DartCompilerListener, DartCompile
 
   @Override
   public void onError(DartCompilationError event) {
+    // problems in dart:core are not interesting
+    // http://code.google.com/p/dart/issues/detail?id=7128
+    if (Elements.isCoreLibrarySource(event.getSource())) {

[Brian Wilkerson, 2012/12/04 19:14:15]

Hm. I thought we had a request from the core library team to *not* hide these
errors. Am I mis-remembering? If not, perhaps we need a command-line flag to
control it (defaulting, I would guess, to hide such errors).

[scheglov, 2012/12/04 19:42:15]

We show the same problems like "Expected constant expression of type num, got
int", when we analyze from Editor and from comment line. So, there are no much
reasons to show them anywhere.

+      return;
+    }
+
     // Remember error.
     {
       Source source = event.getSource();