Add a test case with @SuppressWarnings on a Buck project

Reviewed By: @jvillard

Differential Revision: D2520034

fb-gh-sync-id: 830d504

infer/tests/ant_report.json

@@ -612,5 +612,10 @@
     "type": "RESOURCE_LEAK",
     "procedure": "void WriterLeaks.pipedWriterNotClosedAfterConnect(PipedReader)",
     "file": "codetoanalyze/java/infer/WriterLeaks.java"
+  },
+  {
+    "type": "NULL_DEREFERENCE",
+    "procedure": "void NullPointerExceptions.shouldNotReportNPE()",
+    "file": "codetoanalyze/java/infer/NullPointerExceptions.java"
   }
 ]

infer/tests/codetoanalyze/java/infer/NullPointerExceptions.java

@@ -419,4 +419,10 @@ public class NullPointerExceptions {
     derefUndefinedCallee().toString();
   }
 
+  @SuppressWarnings("null") // TODO(#8647398): Add support for @SuppressWarnings with Ant
+  void shouldNotReportNPE() {
+    Object o = null;
+    o.toString();
+  }
+
 }