6911256: Project Coin: Support Automatic Resource Management (ARM) blocks in the compiler

6964740: Project Coin: More tests for ARM compiler changes
6965277: Project Coin: Correctness issues in ARM implementation
6967065: add -Xlint warning category for Automatic Resource Management (ARM)

Reviewed-by: jjb, darcy, mcimadamore, jjg, briangoetz

langtools/test/tools/javac/TryWithResources/DuplicateResourceDecl.java

@@ -0,0 +1,20 @@
+/*
+ * @test  /nodynamiccopyright/
+ * @bug 6911256 6964740 6965277
+ * @author Maurizio Cimadamore
+ * @summary Check that resource variable is not accessible from catch/finally clause
+ * @compile/fail/ref=DuplicateResourceDecl.out -XDrawDiagnostics DuplicateResourceDecl.java
+ */
+
+class DuplicateResourceDecl {
+
+    public static void main(String[] args) {
+        try(MyResource c = new MyResource();MyResource c = new MyResource()) {
+        //do something
+        } catch (Exception e) { }
+    }
+
+    static class MyResource implements AutoCloseable {
+        public void close() throws Exception {}
+    }
+}