1 files changed, 10 insertions, 0 deletions
diff --git a/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java b/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
index 740cd8e599..d96ad74662 100644
--- a/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
+++ b/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
@@ -1536,4 +1536,14 @@ public final class TestBugs extends BaseTestBugzillaIssues {
     public void test47251() {
         openSample("47251.xls");
     }
+    
+    /**
+     * Round trip a file with an unusual ExtRst record
+     */
+    public void test47847() {
+       HSSFWorkbook wb = openSample("47251.xls");
+       assertEquals(1, wb.getNumberOfSheets());
+       wb = writeOutAndReadBack(wb);
+       assertEquals(1, wb.getNumberOfSheets());
+    }
 }