Issue 3531. Don't allow using built-in identifier as import prefix

compiler/javatests/com/google/dart/compiler/end2end/inc/IncrementalCompilation2Test.java

Index: compiler/javatests/com/google/dart/compiler/end2end/inc/IncrementalCompilation2Test.java
diff --git a/compiler/javatests/com/google/dart/compiler/end2end/inc/IncrementalCompilation2Test.java b/compiler/javatests/com/google/dart/compiler/end2end/inc/IncrementalCompilation2Test.java
index a27ba5747a3d0279b8ce29898484419d07fc0a32..ca59e475cdcb0964c701831d4d9784ae4129e6c3 100644
--- a/compiler/javatests/com/google/dart/compiler/end2end/inc/IncrementalCompilation2Test.java
+++ b/compiler/javatests/com/google/dart/compiler/end2end/inc/IncrementalCompilation2Test.java
@@ -734,7 +734,7 @@ public class IncrementalCompilation2Test extends CompilerTestCase {
         errEx(ResolverErrorCode.CANNOT_ACCESS_METHOD, 6, 5, 9),
         errEx(ResolverErrorCode.CANNOT_ACCESS_METHOD, 9, 5, 15));
   }
-  
+
   /**
    * <p>
    * http://code.google.com/p/dart/issues/detail?id=3340
@@ -760,6 +760,48 @@ public class IncrementalCompilation2Test extends CompilerTestCase {
     compile();
     assertErrors(errors, errEx(ResolverErrorCode.CANNOT_HIDE_IMPORT_PREFIX, 5, 7, 3));
   }
+  
+  /**
+   * <p>
+   * http://code.google.com/p/dart/issues/detail?id=3531
+   */
+  public void test_builtInIdentifier_asTypeAnnotation() throws Exception {
+    appSource.setContent(
+        "A.dart",
+        makeCode(
+            "// filler filler filler filler filler filler filler filler filler filler filler",
+            "#library('A');",
+            ""));
+    appSource.setContent(
+        APP,
+        makeCode(
+            "// filler filler filler filler filler filler filler filler filler filler filler",
+            "#library('application');",
+            "#import('A.dart', prefix: 'abstract');",
+            "#import('A.dart', prefix: 'as');",
+            "#import('A.dart', prefix: 'assert');",
+            "#import('A.dart', prefix: 'Dynamic');",
+            "#import('A.dart', prefix: 'equals');",
+            "#import('A.dart', prefix: 'factory');",
+            "#import('A.dart', prefix: 'get');",
+            "#import('A.dart', prefix: 'implements');",
+            "#import('A.dart', prefix: 'interface');",
+            "#import('A.dart', prefix: 'negate');",
+            "#import('A.dart', prefix: 'operator');",
+            "#import('A.dart', prefix: 'set');",
+            "#import('A.dart', prefix: 'static');",
+            "#import('A.dart', prefix: 'typedef');",
+            "main() {",
+            "  var prf;",
+            "}",
+            ""));
+    // do compile, no errors expected
+    compile();
+    assertEquals(14, errors.size());
+    for (DartCompilationError error : errors) {
+      assertEquals(ResolverErrorCode.BUILT_IN_IDENTIFIER_AS_IMPORT_PREFIX, error.getErrorCode());
+    }
+  }
 
   private void assertAppBuilt() {
     didWrite(APP, EXTENSION_DEPS);