Issue 2382. Using a variable in a scope before its declared that shadows another variable

compiler/javatests/com/google/dart/compiler/resolver/NegativeResolverTest.java

Index: compiler/javatests/com/google/dart/compiler/resolver/NegativeResolverTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/resolver/NegativeResolverTest.java b/compiler/javatests/com/google/dart/compiler/resolver/NegativeResolverTest.java
index da4e27e491273ac5925bf9d330092090868500dd..589eb473666452ca6dc190cc3e0c09b4bbab3231 100644
--- a/compiler/javatests/com/google/dart/compiler/resolver/NegativeResolverTest.java
+++ b/compiler/javatests/com/google/dart/compiler/resolver/NegativeResolverTest.java
@@ -670,6 +670,29 @@ public class NegativeResolverTest extends CompilerTestCase {
         errEx(ResolverErrorCode.DUPLICATE_LOCAL_VARIABLE_WARNING, 6, 11, 1));
   }
 
+  /**
+   * Here we have two local variables: one in "main" and one in the scope on "block". However
+   * variables are declared in lexical scopes, i.e. in "block", so using it before declaration is
+   * error.
+   * <p>
+   * http://code.google.com/p/dart/issues/detail?id=2382
+   */
+  public void test_useVariable_beforeDeclaration_inLexicalScope() throws Exception {
+    checkSourceErrors(
+        makeCode(
+            "// filler filler filler filler filler filler filler filler filler filler",
+            "main() {",
+            "  var x;",
+            "  {",
+            "    x = 1;",
+            "    var x;",
+            "  }",
+            "}",
+            ""),
+        errEx(ResolverErrorCode.USING_LOCAL_VARIABLE_BEFORE_DECLARATION, 5, 5, 1),
+        errEx(ResolverErrorCode.DUPLICATE_LOCAL_VARIABLE_WARNING, 6, 9, 1));
+  }
+
   public void test_nameShadow_field_variable() {
     checkSourceErrors(
         makeCode(